Have you considered using the UBX-TIM-TP qErr correction (the receivers own estimate of the quantisation error for the TIMEPULSE output) instead of sawtooth filtering? I have played with it a little on a u-blox M8, and it sure seemed to smooth things out, but I haven’t made any real measurements on the result. Anders, Thanks for sharing your results!

I am glad you could confirm my rough estimate. The critical point when measuring SC-cut crystals at room temperature is, that their f(T) response is rather steep at room temperature. There even minor temperature variations during the sweep (or between two sweeps) will cause a shift of the impedance response.

NTP is using the PPS and my stats look good, but when I run     ntpq -c kerninfo my output is:     associd=0 status=0118 leap_none, sync_pps, 1 event, no_sys_peer,     pll offset:            0.00753     pll frequency:         -10.4492     maximum error:         0.012     estimated error:       1e-06     kernel status:         pll nano     pll time

With around one watt being dissipated inside, 50C is probably a low estimate of the worst-case ambient temperature inside an enclosed TNS-BUF. My personal design limit would be a dissipation of no more than 150mW for each TO-92 (less if h/w tests showed internal ambient temperature > 50C).

The majority of sparrows were directly behind the nature center area but some were in the northwest area of the park. 10/20/13-Westport-Sherwood Island SP- 4 Yellow-bellied Sapsuckers( in a tight group),35 Yellow-rumped Warbler(conservative estimate),2 EasternTowhee(m&f),surprisingly only 1 Chipping Sparrow,7 Field Sparrow,1 Vesper Sparrow,21 Savannah Sparrow

I'd estimate 300 Dark-eyed Juncos, 150 Song Sparrows, 30 Swamp Sparrows and 20 White-throated Sparrows. Certainly worth looking that flock over more closely. Also present were ~100 American Robins and 2 Hermit Thrushes. An American Woodcock flushed from the bushes behind the maintenance area. Patrick M.

Arne estimated that there were at least 200 Dunlins, and I counted 11 Purple Sandpipers. Sanderllings and Ruddy Turnstones were also present, and it was very satisfying to hear so many birds calling and to see them flying around and foraging. (High tide at Madison was a little after 11:30.) Flo McBride Hamden

I would estimate around 3,000 birds. There were a few Snow Buntings, but their visits are getting to be more intermittent. Bill Wallace reported two White-winged Scoters flying by. Patrick Patrick M.

The highlights of the night's flight were (numbers individuals estimated very conservatively): 3 gray-cheeked thrushes, 30 ovenbirds, 3 MOURNING WARBLERS, 50 common yellowthroats, 120 AMERICAN REDSTARTS, 14 CAPE MAY WARBLERS (numbers of CMWA have been increasing in nocturnal/morning flight surveys across the Northeast) , 40 CHESTNUT-SIDED WARBLERS, and a whopping

I estimate there were 2,200 geese in the fields, in three main flocks. I have not relocated the possible pink-footed goose I saw a week ago, but I did ID 3 cackling geese, and one Canada with a speckled white and black head (looked like it was splattered with white paint).