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Author Topic: All 1 PPS pip / pulse / tick logs here please  (Read 6049 times)

Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #90 on: July 06, 2018, 1705 UTC »
Chris,


Seems to be active most days but frequencies and times vary.


I haven't had too much luck lately, just a matter of not being in the right place at the right time.


Of late, there have been reports on the amateur 17m and 20m bands and I have found activity on 12Mhz between about 12200 kHz and 12450 kHz as well as on 8Mhz between about 8200 kHz and 8400 kHz - those frequencies are approximate.


Additionally, it has been noted frequently on the amateur 30m band as well as 40m and for a time I finding between 6 and 7Mhz but I haven't found it there in quite some time.


So far, no reports of it about 17m or below 6Mhz.


There is still a tendency for the signal be use frequencies of 5 kHz steps i.e. 14250, 14255, 14260, 14265 (etc) and those are the carrier frequencies and you would (of course) need to tune off by 1 to 2 kHz plus or minus for USB or LSB and your preferred "tone" or beat frequency if you prefer.


The signal does jump around alot. I hesitate to say "hop" as that would imply a for knowledge and implication that the signal was frequency hopping in some predetermined order. It likely is but after spending much time watching the PIPS jump around in the waterfall of a SDR, I cannot say with any certainty that there is an obvious pattern of any rhyme or reason. However, perhaps I am just not seeing the obvious and I may just be to closed minded and can't see the forest for the trees as it were.


It has been noted that the signal may remain on one frequency for extended periods of time as well, sometimes minutes, 10's of minutes, even more than an hour.


Good hunting.


cheers, Graham

Offline ChrisSmolinski

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #91 on: July 06, 2018, 1733 UTC »
Thanks Graham, I will hunt for it today after lunch.

Do you get a good signal from the Link-11 transmission around 6940 kHz? That might be an interesting target as well.
Chris Smolinski
Westminster, MD
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NRD 545 / netSDR / AFE822x / AirSpy HF+ / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #92 on: July 06, 2018, 2311 UTC »
UNID 1 PPS PIP is currently active on 14305 kHz (carrier frequency) tune 1 kHz lower for USB


cheers, Graham near Ottawa Canada


Offline ChrisSmolinski

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #93 on: July 06, 2018, 2321 UTC »
UNID 1 PPS PIP is currently active on 14305 kHz (carrier frequency) tune 1 kHz lower for USB


cheers, Graham near Ottawa Canada

Good copy here, I am taking some timing measurements.

First cut at a timing map, I hope I am not too rusty and didn't make any errors:

« Last Edit: July 06, 2018, 2326 UTC by ChrisSmolinski »
Chris Smolinski
Westminster, MD
eQSLs appreciated! Send to: csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline ChrisSmolinski

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #94 on: July 06, 2018, 2334 UTC »
I re-took the data after adjusting the RF gain on the NRD 545 to get a cleaner audio waveform, and came up with a total delay of 447 samples. My radio delay is 291 samples (based on measurements taken some time ago, I do not think it would have changed), so that leads to a net delay of 156 samples (this is all at 44.1 kHz) or 3.5374 milliseconds. Here is the new map, with a slightly larger circle due to the slightly longer delay time.


Chris Smolinski
Westminster, MD
eQSLs appreciated! Send to: csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Online skeezix

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #95 on: July 07, 2018, 2326 UTC »
Yeah.... closing in on a location alright.
Minneapolis, MN

Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #96 on: July 08, 2018, 2346 UTC »
Chris,


Well done.


All roads seem to be pointing in the direction of the Windy City.


cheers, Graham near Ottawa Canada


Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #97 on: July 10, 2018, 2154 UTC »
UNID 1 PPS pip / pulse / tick is active on 14315 kHz (carrier frequency - tune -1 kHz for USB).


Bouncing around as usual from time to time.


14290 kHz now.....


back to 14315 kHz.


Signal strength is strong in Eastern Ontario  SINPO 52245


cheers, Graham near Ottawa Canada


Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #98 on: July 10, 2018, 2224 UTC »
now on 10149kHz (carrier frequency) at 2018-07-10 22:20 UTC


cheers, Graham near Ottawa Canada


Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #99 on: July 10, 2018, 2247 UTC »
now ( 2018-07-10 22:40 UTC ) pip'ing away on 12370 kHz (carrier frequency).


SINPO 52245


and jumping about. On 12235 and 12240 (and perhaps others) as well.




cheers, Graham near Ottawa Canada

Offline Traveling Wave

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #100 on: July 12, 2018, 0154 UTC »
12 July 2018 - 0151 UTC- PIP pulsing on 6320, 6325, 6330, 6335, 6360, 6375, 6400, 6405 kHz, random pulsing as usual, the signal is  S9 +40/60dB in WNY.
0200 UTC - PIP still going strong.
0232 UTC - PIP frequency hopping still going strong.
0304 UTC - PIP spread spectrum frequency hopping still going strong.
« Last Edit: July 12, 2018, 0304 UTC by Traveling Wave »
Location: Western New York ( Niagara Frontier)
Radio :TS480 with RTL-SDR pan-adapter, HDSDR, Omni-Rig Control,Zenith T/O R600
Antenna: 40m dipole, 20-17-15 meter fan dipole

Offline Boriken

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #101 on: July 12, 2018, 0219 UTC »
Strong here in NC using a Sony ICF-SW11 with whip antenna.
I'll add my 2c to the conspiracy theories...
1) DoD experimental signal (maybe NPT) from Crane Naval Facility in Indiana
2) Really slow data where frequency/pips equals bits
3) Some guy ROFL at the rest of us playing whack-a-mole

Scott
Scott / WB4YZA
Western North Carolina
Mosty homebrew, 100% analog

Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #102 on: July 12, 2018, 1428 UTC »
As some may have already heard, the KiwiSDR network has had a new feature added to it's already impressive capabilities and that new capability is the ability to do Time Difference of Arrival ( TDoA ) in near real time on LF/MF/HF signals.


first post (that  noted) on the development was here:


https://www.rtl-sdr.com/locating-various-hf-transmitters-and-number-stations-with-kiwisdrs/


authors very interesting web page here with lots of details on this and other interesting topics:


http://hcab14.blogspot.com/


a follow up on the first link here:


https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-freely-available-for-public-use/


and a posting on qrz.com on someone's first use of this KiwiSDR capability and using to located the UNID 1 PPS PIP/tick/time pulse:


https://forums.qrz.com/index.php?threads/time-signal-intruder.614510/page-31#post-4727876


I tried this technique last evening and my results were similar to those described by the poster on qrz.com


cheers, Graham near Ottawa Canada

Offline Traveling Wave

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #103 on: July 19, 2018, 0109 UTC »
19 July 2018
0107 UTC - PIP is hopping around 40 meters on the following frequencies: 7145, 7150, 7180, 7195, 7200, 7210, 7240, 7245, 7250, 7295 kHz.  Signal is S9 +20/40 dB in WNY.
0147 UTC - PIP still hopping frequencies on 40 meters.
0258 UTC - PIP still hopping frequencies on 40 meters.
0342 UTC - PIP still hopping frequencies on 40 meters.
0400 UTC - PIP gone.
« Last Edit: July 19, 2018, 0400 UTC by Traveling Wave »
Location: Western New York ( Niagara Frontier)
Radio :TS480 with RTL-SDR pan-adapter, HDSDR, Omni-Rig Control,Zenith T/O R600
Antenna: 40m dipole, 20-17-15 meter fan dipole

Offline GrahamC

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Re: All 1 PPS pip / pulse / tick logs here please
« Reply #104 on: July 19, 2018, 1125 UTC »
I had stumbled across the UNID 1 PPS pip / pulse / tick about an hour earlier on 14320 kHz (carrier frequency). It was there for a bit and then stopped. Did a scan from 40 meters up to 20m but probably just wasn't looking in the right spot at the right time before I got distracted with something else.


I was hoping to find it on one frequency long enough that I could try KiwiSDR TDoA on it but no such luck.


cheers, Graham near Ottawa Canada