DS
Dave Sublette
Tue, Jul 18, 2017 11:10 AM
Good morning from Electron Acres, or if you prefer, Radio Ridge.
I’ve been up since 5 AM, installing the components in a friend’s mast mounted 2M preamp, to allow running the DC voltage up the coax center conductor. In the meantime, I have the beacon running in the background.
Looking at it with the Softrock Ensemble II VHF and the HDSDR software package, the signal peaked about thirty minutes ago at S3, more than 30 dB above the base noise. It was clearly Q5 copiable… very little fading, solid as can be. The trace on the waterfall was bright.
Sitting next to it on the shelf and side by side simultaneously copying the same signal was my SDR-14, being run by the Spectravue software package. On that screen, no trace at all. There was no audio. There was no signal that I could detect. I know that it is working. A signal generator at a high enough level will appear on it.
I guess the point is I am disappointed. The cost of the SDR-14 was ridiculously high when I bought it ten or more years ago. The cost of the softrock? It was about one tenth of the SDR-14. Now, to be fair the SDR-14 has a lot of useful features built in, which are not in the HDSDR/Softrock package. Unfortunately, I don’t need or use the added features.
Judging from comparisons of the two on the signal generator, I believe I could make the SDR-14 work with about 30 dB of amplification ahead of it. I have (somewhere around here) just such a device that I was using for awhile, but put away a few months ago. If I can find it, I will add it in and report the results.
If any of you on the list is familiar with the HDSDR and Spectravue software packages, I would like to compare notes. I’m still not sure if I am running either one of them with optimum settings.
One last thing before I go. I have struggled, off and on, for over ten years to learn how to use the konrad program. It is claimed to be far superior to other software packages. If any of you is familiar with that package, I would love to have some guidance.
73 for now (the beacon is back stronger than before).
Dave, K4To
Good morning from Electron Acres, or if you prefer, Radio Ridge.
I’ve been up since 5 AM, installing the components in a friend’s mast mounted 2M preamp, to allow running the DC voltage up the coax center conductor. In the meantime, I have the beacon running in the background.
Looking at it with the Softrock Ensemble II VHF and the HDSDR software package, the signal peaked about thirty minutes ago at S3, more than 30 dB above the base noise. It was clearly Q5 copiable… very little fading, solid as can be. The trace on the waterfall was bright.
Sitting next to it on the shelf and side by side simultaneously copying the same signal was my SDR-14, being run by the Spectravue software package. On that screen, no trace at all. There was no audio. There was no signal that I could detect. I know that it is working. A signal generator at a high enough level will appear on it.
I guess the point is I am disappointed. The cost of the SDR-14 was ridiculously high when I bought it ten or more years ago. The cost of the softrock? It was about one tenth of the SDR-14. Now, to be fair the SDR-14 has a lot of useful features built in, which are not in the HDSDR/Softrock package. Unfortunately, I don’t need or use the added features.
Judging from comparisons of the two on the signal generator, I believe I could make the SDR-14 work with about 30 dB of amplification ahead of it. I have (somewhere around here) just such a device that I was using for awhile, but put away a few months ago. If I can find it, I will add it in and report the results.
If any of you on the list is familiar with the HDSDR and Spectravue software packages, I would like to compare notes. I’m still not sure if I am running either one of them with optimum settings.
One last thing before I go. I have struggled, off and on, for over ten years to learn how to use the konrad program. It is claimed to be far superior to other software packages. If any of you is familiar with that package, I would love to have some guidance.
73 for now (the beacon is back stronger than before).
Dave, K4To
ZW
Zack Widup
Tue, Jul 18, 2017 12:50 PM
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
On Tue, Jul 18, 2017 at 6:10 AM, Dave Sublette via mvus-list
mvus-list@febo.com wrote:
Good morning from Electron Acres, or if you prefer, Radio Ridge.
I’ve been up since 5 AM, installing the components in a friend’s mast mounted 2M preamp, to allow running the DC voltage up the coax center conductor. In the meantime, I have the beacon running in the background.
Looking at it with the Softrock Ensemble II VHF and the HDSDR software package, the signal peaked about thirty minutes ago at S3, more than 30 dB above the base noise. It was clearly Q5 copiable… very little fading, solid as can be. The trace on the waterfall was bright.
Sitting next to it on the shelf and side by side simultaneously copying the same signal was my SDR-14, being run by the Spectravue software package. On that screen, no trace at all. There was no audio. There was no signal that I could detect. I know that it is working. A signal generator at a high enough level will appear on it.
I guess the point is I am disappointed. The cost of the SDR-14 was ridiculously high when I bought it ten or more years ago. The cost of the softrock? It was about one tenth of the SDR-14. Now, to be fair the SDR-14 has a lot of useful features built in, which are not in the HDSDR/Softrock package. Unfortunately, I don’t need or use the added features.
Judging from comparisons of the two on the signal generator, I believe I could make the SDR-14 work with about 30 dB of amplification ahead of it. I have (somewhere around here) just such a device that I was using for awhile, but put away a few months ago. If I can find it, I will add it in and report the results.
If any of you on the list is familiar with the HDSDR and Spectravue software packages, I would like to compare notes. I’m still not sure if I am running either one of them with optimum settings.
One last thing before I go. I have struggled, off and on, for over ten years to learn how to use the konrad program. It is claimed to be far superior to other software packages. If any of you is familiar with that package, I would love to have some guidance.
73 for now (the beacon is back stronger than before).
Dave, K4To
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Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
On Tue, Jul 18, 2017 at 6:10 AM, Dave Sublette via mvus-list
<mvus-list@febo.com> wrote:
> Good morning from Electron Acres, or if you prefer, Radio Ridge.
>
> I’ve been up since 5 AM, installing the components in a friend’s mast mounted 2M preamp, to allow running the DC voltage up the coax center conductor. In the meantime, I have the beacon running in the background.
>
> Looking at it with the Softrock Ensemble II VHF and the HDSDR software package, the signal peaked about thirty minutes ago at S3, more than 30 dB above the base noise. It was clearly Q5 copiable… very little fading, solid as can be. The trace on the waterfall was bright.
>
> Sitting next to it on the shelf and side by side simultaneously copying the same signal was my SDR-14, being run by the Spectravue software package. On that screen, no trace at all. There was no audio. There was no signal that I could detect. I know that it is working. A signal generator at a high enough level will appear on it.
>
> I guess the point is I am disappointed. The cost of the SDR-14 was ridiculously high when I bought it ten or more years ago. The cost of the softrock? It was about one tenth of the SDR-14. Now, to be fair the SDR-14 has a lot of useful features built in, which are not in the HDSDR/Softrock package. Unfortunately, I don’t need or use the added features.
>
> Judging from comparisons of the two on the signal generator, I believe I could make the SDR-14 work with about 30 dB of amplification ahead of it. I have (somewhere around here) just such a device that I was using for awhile, but put away a few months ago. If I can find it, I will add it in and report the results.
>
> If any of you on the list is familiar with the HDSDR and Spectravue software packages, I would like to compare notes. I’m still not sure if I am running either one of them with optimum settings.
>
> One last thing before I go. I have struggled, off and on, for over ten years to learn how to use the konrad program. It is claimed to be far superior to other software packages. If any of you is familiar with that package, I would love to have some guidance.
>
> 73 for now (the beacon is back stronger than before).
>
> Dave, K4To
>
>
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DS
Dave Sublette
Tue, Jul 18, 2017 1:10 PM
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup w9sz.zack@gmail.com wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>
> Interesting. I have the VHF Softrock and found its sensitivity
> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
> would only go up to 1000 MHz but SDR# goes beyond that.
>
> 73, Zack W9SZ
>
ZW
Zack Widup
Tue, Jul 18, 2017 2:11 PM
Thanks for the info, Dave. Does HDSDR still have an upper frequency
limit of 1000 MHz?
73, Zack W9SZ
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette k4to@arrl.net wrote:
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup w9sz.zack@gmail.com wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
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Thanks for the info, Dave. Does HDSDR still have an upper frequency
limit of 1000 MHz?
73, Zack W9SZ
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net> wrote:
> Good morning Zack,
>
> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>
> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>
> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>
> 73,
>
> Dave, K4TO
>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>
>> Interesting. I have the VHF Softrock and found its sensitivity
>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>> would only go up to 1000 MHz but SDR# goes beyond that.
>>
>> 73, Zack W9SZ
>>
>
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DS
Dave Sublette
Tue, Jul 18, 2017 3:28 PM
Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
On Jul 18, 2017, at 10:11 AM, Zack Widup w9sz.zack@gmail.com wrote:
Thanks for the info, Dave. Does HDSDR still have an upper frequency
limit of 1000 MHz?
73, Zack W9SZ
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette k4to@arrl.net wrote:
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup w9sz.zack@gmail.com wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
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Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>
> Thanks for the info, Dave. Does HDSDR still have an upper frequency
> limit of 1000 MHz?
>
> 73, Zack W9SZ
>
>
> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net> wrote:
>> Good morning Zack,
>>
>> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>>
>> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>>
>> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>>
>> 73,
>>
>> Dave, K4TO
>>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>>
>>> Interesting. I have the VHF Softrock and found its sensitivity
>>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>>> would only go up to 1000 MHz but SDR# goes beyond that.
>>>
>>> 73, Zack W9SZ
>>>
>>
> <div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br />
> <table style="border-top: 1px solid #D3D4DE;">
> <tr>
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J
Joe
Tue, Jul 18, 2017 3:35 PM
Here are some additional SDR comparisons:
This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list mvus-list@febo.com wrote:
Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
On Jul 18, 2017, at 10:11 AM, Zack Widup w9sz.zack@gmail.com wrote:
Thanks for the info, Dave. Does HDSDR still have an upper frequency
limit of 1000 MHz?
73, Zack W9SZ
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette k4to@arrl.net wrote:
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup w9sz.zack@gmail.com wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
Here are some additional SDR comparisons:
This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
> On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com> wrote:
>
> Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
>
> Dave
>> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>
>> Thanks for the info, Dave. Does HDSDR still have an upper frequency
>> limit of 1000 MHz?
>>
>> 73, Zack W9SZ
>>
>>
>> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net> wrote:
>>> Good morning Zack,
>>>
>>> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>>>
>>> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>>>
>>> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>>>
>>> 73,
>>>
>>> Dave, K4TO
>>>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>>>
>>>> Interesting. I have the VHF Softrock and found its sensitivity
>>>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>>>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>>>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>>>> would only go up to 1000 MHz but SDR# goes beyond that.
>>>>
>>>> 73, Zack W9SZ
>>>>
DS
Dave Sublette
Tue, Jul 18, 2017 3:47 PM
So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
On Jul 18, 2017, at 11:35 AM, Joe gojoe55@gmail.com wrote:
Here are some additional SDR comparisons:
<Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com mailto:mvus-list@febo.com> wrote:
Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com mailto:w9sz.zack@gmail.com> wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
> On Jul 18, 2017, at 11:35 AM, Joe <gojoe55@gmail.com> wrote:
>
> Here are some additional SDR comparisons:
> <Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
>
> This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
>
> Joe - WA8OGS
>
>
>> On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com <mailto:mvus-list@febo.com>> wrote:
>>
>> Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
>>
>> Dave
>>> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>
>>> Thanks for the info, Dave. Does HDSDR still have an upper frequency
>>> limit of 1000 MHz?
>>>
>>> 73, Zack W9SZ
>>>
>>>
>>> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net <mailto:k4to@arrl.net>> wrote:
>>>> Good morning Zack,
>>>>
>>>> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>>>>
>>>> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>>>>
>>>> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>>>>
>>>> 73,
>>>>
>>>> Dave, K4TO
>>>>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>>>
>>>>> Interesting. I have the VHF Softrock and found its sensitivity
>>>>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>>>>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>>>>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>>>>> would only go up to 1000 MHz but SDR# goes beyond that.
>>>>>
>>>>> 73, Zack W9SZ
>>>>>
>
J
Joe
Tue, Jul 18, 2017 3:48 PM
On Jul 18, 2017, at 11:47 AM, Dave Sublette k4to@arrl.net wrote:
So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
On Jul 18, 2017, at 11:35 AM, Joe <gojoe55@gmail.com mailto:gojoe55@gmail.com> wrote:
Here are some additional SDR comparisons:
<Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com mailto:mvus-list@febo.com> wrote:
Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com mailto:w9sz.zack@gmail.com> wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
MUD 2018 in Dayton.
> On Jul 18, 2017, at 11:47 AM, Dave Sublette <k4to@arrl.net> wrote:
>
> So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
>
>> On Jul 18, 2017, at 11:35 AM, Joe <gojoe55@gmail.com <mailto:gojoe55@gmail.com>> wrote:
>>
>> Here are some additional SDR comparisons:
>> <Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
>>
>> This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
>>
>> Joe - WA8OGS
>>
>>
>>> On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com <mailto:mvus-list@febo.com>> wrote:
>>>
>>> Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
>>>
>>> Dave
>>>> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>>
>>>> Thanks for the info, Dave. Does HDSDR still have an upper frequency
>>>> limit of 1000 MHz?
>>>>
>>>> 73, Zack W9SZ
>>>>
>>>>
>>>> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net <mailto:k4to@arrl.net>> wrote:
>>>>> Good morning Zack,
>>>>>
>>>>> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>>>>>
>>>>> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>>>>>
>>>>> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>>>>>
>>>>> 73,
>>>>>
>>>>> Dave, K4TO
>>>>>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>>>>
>>>>>> Interesting. I have the VHF Softrock and found its sensitivity
>>>>>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>>>>>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>>>>>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>>>>>> would only go up to 1000 MHz but SDR# goes beyond that.
>>>>>>
>>>>>> 73, Zack W9SZ
>>>>>>
>>
>
ZW
Zack Widup
Tue, Jul 18, 2017 4:58 PM
I also think Santa Clara is a little too far for me to travel,
especially if I want to take any antennas for testing. I probably
won't make this year's MUD. Dayton is one I would make for sure.
73, Zack W9SZ
On Tue, Jul 18, 2017 at 10:48 AM, Joe gojoe55@gmail.com wrote:
MUD 2018 in Dayton.
On Jul 18, 2017, at 11:47 AM, Dave Sublette k4to@arrl.net wrote:
So — where is MUD 2018 being held? Santa Clara is a little too far for this
year.
On Jul 18, 2017, at 11:35 AM, Joe gojoe55@gmail.com wrote:
Here are some additional SDR comparisons:
<Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
This would be a great topic for our Microwave Update Conference next year -
especially if comparing features of several available SDRs for the
VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list
mvus-list@febo.com wrote:
Well, I’ve never even thought about that. I don’t know how to tell. If it
is simple, tell me how and I will look.
Dave
On Jul 18, 2017, at 10:11 AM, Zack Widup w9sz.zack@gmail.com wrote:
Thanks for the info, Dave. Does HDSDR still have an upper frequency
limit of 1000 MHz?
73, Zack W9SZ
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette k4to@arrl.net wrote:
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the
sensitivity of the VHF Softrock by itself is not anything spectacular. I
built a box with relays and a DEMI LNA in it. I goes between the IF output
of the selected transverter and the 3 dB hybrid feeding both SDRs. The
relays in the added box switch everything to a safe condition when I
transmit. At that point in the system, I am only transmitting +22 dBm. The
relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the
enhanced sensitivity of my VHF Softrock is the result of the added LNA.
However, that same LNA is also feeding the SDR-14. So the same signal with
the same s/n is feeding both units. The Softrock is 20 dB or more better
than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added
feature that allows the signal level to be calibrated. I used my signal
generator and calibrated it. So now I can read levels in dBm on the screen.
The signal levels can be detected and read between -150 dBm and +30 dBm. I
didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked
from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup w9sz.zack@gmail.com wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
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alt="" width="46" height="29" style="width: 46px; height: 29px;"
/></a></td>
<td style="width: 470px; padding-top: 12px; color: #41424e;
font-size: 13px; font-family: Arial, Helvetica, sans-serif;
line-height: 18px;">Virus-free. <a
href="https://www.avast.com/en-us/lp-safe-emailing-3176-a?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=oa-3176-a"
target="_blank" style="color: #4453ea;">www.avast.com</a>
</td>
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</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1"
height="1"></a></div>
I also think Santa Clara is a little too far for me to travel,
especially if I want to take any antennas for testing. I probably
won't make this year's MUD. Dayton is one I would make for sure.
73, Zack W9SZ
On Tue, Jul 18, 2017 at 10:48 AM, Joe <gojoe55@gmail.com> wrote:
> MUD 2018 in Dayton.
>
> On Jul 18, 2017, at 11:47 AM, Dave Sublette <k4to@arrl.net> wrote:
>
> So — where is MUD 2018 being held? Santa Clara is a little too far for this
> year.
>
> On Jul 18, 2017, at 11:35 AM, Joe <gojoe55@gmail.com> wrote:
>
> Here are some additional SDR comparisons:
> <Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
>
> This would be a great topic for our Microwave Update Conference next year -
> especially if comparing features of several available SDRs for the
> VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
>
> Joe - WA8OGS
>
>
> On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list
> <mvus-list@febo.com> wrote:
>
> Well, I’ve never even thought about that. I don’t know how to tell. If it
> is simple, tell me how and I will look.
>
> Dave
>
> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>
> Thanks for the info, Dave. Does HDSDR still have an upper frequency
> limit of 1000 MHz?
>
> 73, Zack W9SZ
>
>
> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net> wrote:
>
> Good morning Zack,
>
> My email did not detail the complete system, so you were misled. Yes, the
> sensitivity of the VHF Softrock by itself is not anything spectacular. I
> built a box with relays and a DEMI LNA in it. I goes between the IF output
> of the selected transverter and the 3 dB hybrid feeding both SDRs. The
> relays in the added box switch everything to a safe condition when I
> transmit. At that point in the system, I am only transmitting +22 dBm. The
> relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the
> enhanced sensitivity of my VHF Softrock is the result of the added LNA.
> However, that same LNA is also feeding the SDR-14. So the same signal with
> the same s/n is feeding both units. The Softrock is 20 dB or more better
> than the SDR-14.
>
> I downloaded and installed the latest HDSDR program. It has an added
> feature that allows the signal level to be calibrated. I used my signal
> generator and calibrated it. So now I can read levels in dBm on the screen.
> The signal levels can be detected and read between -150 dBm and +30 dBm. I
> didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked
> from that level all the way down to the bottom perfectly.
>
> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>
> 73,
>
> Dave, K4TO
>
> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>
> Interesting. I have the VHF Softrock and found its sensitivity
> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
> would only go up to 1000 MHz but SDR# goes beyond that.
>
> 73, Zack W9SZ
>
>
>
>
<div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br />
<table style="border-top: 1px solid #D3D4DE;">
<tr>
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TH
Tom Holmes
Tue, Jul 18, 2017 5:40 PM
Dave...
Why right here on Dayton, of course. Well, actually in Fairborn but it's too soon to be splitting those hairs.
From Tom Holmes, N8ZM
On Jul 18, 2017, at 11:47 AM, Dave Sublette via mvus-list mvus-list@febo.com wrote:
So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
On Jul 18, 2017, at 11:35 AM, Joe gojoe55@gmail.com wrote:
Here are some additional SDR comparisons:
<Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
Joe - WA8OGS
On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com mailto:mvus-list@febo.com> wrote:
Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
Dave
On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net mailto:k4to@arrl.net> wrote:
Good morning Zack,
My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
73,
Dave, K4TO
On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com mailto:w9sz.zack@gmail.com> wrote:
Interesting. I have the VHF Softrock and found its sensitivity
comparable to my FT290RII, which isn't as sensitive as my homebrew 144
MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
would only go up to 1000 MHz but SDR# goes beyond that.
73, Zack W9SZ
Dave...
Why right here on Dayton, of course. Well, actually in Fairborn but it's too soon to be splitting those hairs.
From Tom Holmes, N8ZM
> On Jul 18, 2017, at 11:47 AM, Dave Sublette via mvus-list <mvus-list@febo.com> wrote:
>
> So — where is MUD 2018 being held? Santa Clara is a little too far for this year.
>
>> On Jul 18, 2017, at 11:35 AM, Joe <gojoe55@gmail.com> wrote:
>>
>> Here are some additional SDR comparisons:
>> <Screen Shot 2017-07-18 at 10.28.18 AM.png.png>
>>
>> This would be a great topic for our Microwave Update Conference next year - especially if comparing features of several available SDRs for the VHF/UHF/Microwave bands. Maybe Zack and Dave and ??? would be part or this?
>>
>> Joe - WA8OGS
>>
>>
>>> On Jul 18, 2017, at 11:28 AM, Dave Sublette via mvus-list <mvus-list@febo.com <mailto:mvus-list@febo.com>> wrote:
>>>
>>> Well, I’ve never even thought about that. I don’t know how to tell. If it is simple, tell me how and I will look.
>>>
>>> Dave
>>>> On Jul 18, 2017, at 10:11 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>>
>>>> Thanks for the info, Dave. Does HDSDR still have an upper frequency
>>>> limit of 1000 MHz?
>>>>
>>>> 73, Zack W9SZ
>>>>
>>>>
>>>>> On Tue, Jul 18, 2017 at 8:10 AM, Dave Sublette <k4to@arrl.net <mailto:k4to@arrl.net>> wrote:
>>>>> Good morning Zack,
>>>>>
>>>>> My email did not detail the complete system, so you were misled. Yes, the sensitivity of the VHF Softrock by itself is not anything spectacular. I built a box with relays and a DEMI LNA in it. I goes between the IF output of the selected transverter and the 3 dB hybrid feeding both SDRs. The relays in the added box switch everything to a safe condition when I transmit. At that point in the system, I am only transmitting +22 dBm. The relays ar G6Y types on a pc board. That kit is also a DEMI kit. So the enhanced sensitivity of my VHF Softrock is the result of the added LNA. However, that same LNA is also feeding the SDR-14. So the same signal with the same s/n is feeding both units. The Softrock is 20 dB or more better than the SDR-14.
>>>>>
>>>>> I downloaded and installed the latest HDSDR program. It has an added feature that allows the signal level to be calibrated. I used my signal generator and calibrated it. So now I can read levels in dBm on the screen. The signal levels can be detected and read between -150 dBm and +30 dBm. I didn’t run the sig gen any higher than -30 dBm, but the Softrock tracked from that level all the way down to the bottom perfectly.
>>>>>
>>>>> It’s a pretty cool piece of equipment for $79.95 or whatever I paid for it.
>>>>>
>>>>> 73,
>>>>>
>>>>> Dave, K4TO
>>>>>> On Jul 18, 2017, at 8:50 AM, Zack Widup <w9sz.zack@gmail.com <mailto:w9sz.zack@gmail.com>> wrote:
>>>>>>
>>>>>> Interesting. I have the VHF Softrock and found its sensitivity
>>>>>> comparable to my FT290RII, which isn't as sensitive as my homebrew 144
>>>>>> MHz transverter. I use either HDSDR or SDR#. I'm not familiar with
>>>>>> Spectravue. When I started using my RTL SDR dongle, I believe HDSDR
>>>>>> would only go up to 1000 MHz but SDR# goes beyond that.
>>>>>>
>>>>>> 73, Zack W9SZ
>>>>>>
>>
>
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