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List: time-nuts@lists.febo.com
From: Andy Talbot
 
Re: local WWVB ?
Sat, Dec 11, 2021 4:20 PM
I used to transmit on 73kHz when we briefly had an amateiur band there, have 7 metre high antenna with a substantial capacity hat, was putting 200 Watts into it but was getting an estimated radiated power of just a few milliwatts.
List: discuss@lists.openscad.org
From: Terry
 
Re: Morphing irregular shape while extruding?
Thu, Jan 19, 2023 4:55 PM
Presumably the factor >would be b/h estimated from the photo. > >Precision won't be an issue as I'll glue some thin but flexible stuff to >the outside. > >The more difficult aspect is that the other end of the print must be a >cylinder of about 2 inches (50 mm) in height and 5/8 inch (15 mm) inner >diameter. (I'll be attaching a hose or similar.)
List: tacomaart@list.cityoftacoma.org
From: Derek Nguyen
 
Resilience– A Sansei Sense of Legacy opens Saturday, February 4th
Fri, Feb 3, 2023 12:12 AM
Roosevelt in 1942, forced the evacuation and incarceration of an estimated 126,000 people of Japanese ancestry living on the West Coast. On February 16, guests can visit free from 3:00 pm to 8:00 pm as part of our Third Thursday program.
List: time-nuts@lists.febo.com
From: john.haine@haine-online.net
 
Re: Does a higher GPS module output frequency have any advantages for usage in a GPSDO?
Fri, Feb 7, 2025 10:21 AM
The sawtooth signal if present provides an estimate of the error at each pulse which can be used to correct for it. If you select an N that is an integer factor of 48e6 then the output frequency only has the same 21ns jitter as the 1Hz.
List: discuss@lists.openscad.org
From: John David
 
NURBS length review and comments
Thu, Feb 6, 2025 9:42 PM
. // // returns: the estimated spline length whose nurb_curve splinesteps // and splinesteps*2 by less than eps percent. function nurbs_len(control,degree,splinesteps=4, u, mult, weights, type="clamped", knots, eps=0.0001, _priorlen=0) = let ( pts = nurbs_curve(control,degree, splinesteps, u, mult, weights, type, knots), slen = _lsum(pts
List: usrp-users@lists.ettus.com
From: Martin Braun
 
Re: Utilizing power calibration to obtain actual received power level
Wed, Apr 9, 2025 7:02 AM
*How can I use the calibration file in python to obtain estimated >>> received power level at the RX side in dBm?* This is not clear in the >>> documentation. I would like to do this for the TX side as well. >>> >>> Thanks!
List: time-nuts@lists.febo.com
From: john.haine@haine-online.net
 
Re: question from student
Thu, Sep 25, 2025 10:32 AM
(An estimate for the UK but the costs to the economy of losing GPS measured in £billions per week, so in that context fibre is cheap.) On another recent thread on here I asked about disciplining oscillators to other off-air signals and a multi-standard receiver.
List: birdalert@ontbirds.ca
From: Jean Iron
 
[Ontbirds] James Bay Shorebirds - Little Piskwamish Report #2
Mon, Aug 11, 2014 6:14 PM
#2. http://www.jeaniron.ca/2014/JB14/map.htm Population Estimates of North American Shorebirds 2012. #3. http://www.jeaniron.ca/2013/ShorebirdPop2012.pdf Southbound Shorebirds: Some basic facts.
List: trawlers@lists.trawlering.com
From: captnwil@coastalnet.com
 
Trawler Range -- Beebe Curve
Sun, Jul 12, 1998 7:09 PM
Summing It Up Taking just the things listed above into account, it is obvious to me why estimating the range of Trawlers is such a difficult task. It is obvious that no single formula can do more than get you into the ball park at best, and that actual results may be greatly different.
List: time-nuts@lists.febo.com
From: Jeremy Elson
 
Experience writing a millisecond-accurate NTP client on the ESP32
Fri, Feb 11, 2022 6:34 AM
Note in the histogram that the errors are highly asymmetrical; this is because there's high jitter in the estimate of when we send a packet, but very little in the reception timestamps. I chose to calibrate this asymmetry out, by subtracting 200us from the latency estimate as a "hard-coded constant".