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Author Topic: All 1 PPS pip / pulse / tick logs here please  (Read 6046 times)

Offline GrahamC

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Re: UNID 1 PPS time tick
« Reply #15 on: April 12, 2018, 1306 UTC »
The UNID 1 PPS signal remained active til at least 2018-04-11 22:30UTC when I last checked.

Some observations,

The UNID 1 PPS signal remained on 7285kHz from the time CaptKliegle reported it at 2018-04-11 11:13UTC until I last checked at 22:30UTC

At 2018-04-11 20:00UTC China Radio International started broadcasting on 7285kHz but the UNID 1 PPS pip could still be heard, at least at my location. I did not note when China Radio International stopped broadcasting and I am not sure where the transmitter for this broadcast was located - maybe Cerrik Albania ?

Having had a bit of time to poke around, I started to check about for the PIP or ditter than Token has reported. I noted quite a lot of interesting activity.

Firstly, above and below 7285kHz I noticed PIP's every 3 seconds (approximately), one was 35kHz above at 7320kHz and the other 85kHz below at 7200kHz. further searching found PIPs every 120kHz at (6960kHz - not sure but I thought I could hear this one), 6900kHz but nothing lower in frequency; 7440khz, 7560kHz, 7680kHz, 7800kHz, 7920kHz, 8040kHz, 8160kHz, 8280kHz, 8400kHz, 8520kHz, and 9300kHz . All with an apparent repetition rate of once every 3 seconds (approx) except 9300kHz which appeared to be every 6 to 7 seconds  I measured pulse width from a simple recording using audacity at 128ms which is interestingly 8x the pulse width of the UNID 1 PPS signal on 7285kHz (16ms pulse width).

Time wise, this was all between approximately 2018-04-11 16:00UTC and 17:00UTC

Also noted where PIPs on 7880kHz, 7640kHz, 7620kHz, 7400kHz, and 7300kHz all with an apparent repetition rate of once every 6 to 7 seconds (approx)

Furthermore, I noted another set spaced 110kHz apart at 7460kHz, 7570kHz, 7680kHz, all with an apparent repetition rate of once every 3 seconds (approx) and another on 7920kHz also every 3 seconds.

All of these nice and neatly spaced and repetitive PIPs has me wondering whether or not these were real signals and not just some artifact of my SDR receiver (airspy HF+) and computer BUT most were quite weak and others a bit stronger and all exhibited fading as would a signal which was propagated rather than locally created. Still, this is something to consider with respect to these other PIPs I was hearing and seeing on the SDR waterfall. Was I chasing my tail or where these PIPs real signals?

I did not note any double PIPs but occasionally one may have been dropped or just not heard as a result of fading.

Whether these PIPs were related to the UNID 1 PPS on 7285kHz is uncertain.

Whether these PIPs were related to the PIP or Ditter signals that Token has reported is uncertain other than being of a similar pattern and repetition rate.



cheers, Graham

 

Offline GrahamC

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Re: UNID 1 PPS time tick
« Reply #16 on: April 12, 2018, 1311 UTC »
oops, should have mentioned - all frequencies are carrier frequency, tune + or - 1kHz for USB or LSB respectively or whatever offset give you your preferred tone.

cheers, Graham

Offline kidgradius

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Re: UNID 1 PPS time tick
« Reply #17 on: April 13, 2018, 1340 UTC »
I spoke to GrahamC on 04-11 about 7286.00

No longer hearing beeps on:
7286.00
Gaithersburg Md, USA
FM19KB

Offline CaptnKliegle

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UNID 40M PIP's
« Reply #18 on: April 24, 2018, 0042 UTC »
7115 KHz @ 1 sec intervals 0027UTC S9+43 dB
OFF at 0030UTC (freq jump)

Found again:
7060 KHz @ 0033 (moved from another freq between 7115 and 7060 at 0032UTC Still S9-9+43

Seems to jump around the CW portion of the band.
Not a very clean signal either, edges are 20kHz wide

Currently near 7094....
Seacoast of NH  RXR's =6 X SDR-iq's, SDRPlay, and an AirspyHF+. TXR's = 2 X TS-590S,  ANAN100D, 2 x IC-7300's. Antennas = Resonant wire dipoles, 120' end fed wires, or SteppIR 3 ele beam @ 70' fixed NE/SW directions.
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Offline CaptnKliegle

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Re: UNID 40M PIP's
« Reply #19 on: April 24, 2018, 0048 UTC »
Jumping all over the band now, about every 15 sec...
Seacoast of NH  RXR's =6 X SDR-iq's, SDRPlay, and an AirspyHF+. TXR's = 2 X TS-590S,  ANAN100D, 2 x IC-7300's. Antennas = Resonant wire dipoles, 120' end fed wires, or SteppIR 3 ele beam @ 70' fixed NE/SW directions.
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Offline GrahamC

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Re: UNID 40M PIP's
« Reply #20 on: April 24, 2018, 1227 UTC »
Missed this yesterday evening as I haven't had much time to spend in front of the radio of late.

Sounds like our UNID 1 PPS pip alright, same typical operating pattern.

When I have measured the PIP pulse width I get approximately 16ms and it has a quick leading and trailing edge plus whatever it is seems to be running a lot of power all contributing to it's apparent bandwidth. I can often here the PIP even when tuned off frequency 10kHz.

Still no idea on who or what. Maybe related to some HARRP or SUPER DARN or Aricebo research activity. I have been poking around the FCC licence database (and the Canadian one too) but so far have not stumbled across any likely candidates but then again maybe I did but couldn't see the connection.

This does not appear to be related to the PIP's that Token often mentions (but it may be). I have seen them both active at the same time and I have seen each active while the other was not. Also the UNID 1 PPS PIP seems to stay within the amateur 40m and 30m bands whereas the other PIPs do not.

cheers, Graham near Ottawa Canada.

Offline Boriken

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Re: UNID 40M PIP's
« Reply #21 on: April 24, 2018, 1317 UTC »
Graham,

I was on 40m CW last night using my HW-8 (DC receiver, wide as a barn door). I could hear the Pips from 10kc away. Really loud here. Heard them around 7095, 7105 & 7115. Had to shut down due to an approaching t-storm. I'll have to hook up the 40m coaxial loop & see if I can get some kind of bearing. 100% analog here so I have to find them first then chase 'em when they move.

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

Offline GrahamC

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Re: UNID 40M PIP's
« Reply #22 on: April 24, 2018, 1735 UTC »
Hi Scott,

I had a HW-8 40 years ago. Wished I never sold it. Certainly not a high performance design by any stretch but it is one of the classics and a joy to use in that class of radio.

I have been testing out a simple loop antenna with the intention of being able to take bearings and help null out some very persistent and up to now difficult to get ride of EMI/RFI.

cheers, Graham VE3GTC near Ottawa Canada

Offline GrahamC

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Re: UNID 1 PPS time tick
« Reply #23 on: May 02, 2018, 2253 UTC »
Good evening all,

The UNID 1 PPS time tick has taken an interesting twist.

Some local (to me) amateur radio operators reported hearing what by their description sounds like the the UNID 1 PPS time tick which has been noted on 40m and 30m since around the first of this year.

first report was around 2018-05-02 15:25 UTC on a frequency near 18073 kHz.

I suspect but have no evidence that the carrier frequency was really 18075 kHz due to the history of this signals modus operandi of using even 5 kHz frequencies (i.e. 10100, 10105, 10110 kHz etc)

The signal was reported to be very strong S9+30dB.

One person who heard this signal reported a bearing of 270 degrees true.

No idea when the signal stopped being heard but the last report was 17:25 UTC

This is first report I have found of this signal on 17m

I will have to check some of other online forums to see if anyone else has reported this on 17m.

The mystery continues.

cheers, Graham near Ottawa Canada

Offline Traveling Wave

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UNID PIP 14265 kHz 1718 UTC 4 April 2018
« Reply #24 on: May 04, 2018, 1720 UTC »
1718 UTC - Checking out the 20 meter amateur band when I just noticed the PIP on 14265 kHz, signal is sS9 +20dB in WNY. One second intervals between signal pulses.
1723 UTC - Just moved to 14260 kHz.
1724 UTC - PIP is gone.
« Last Edit: May 04, 2018, 1725 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 CaptnKliegle

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Re: UNID 40M PIP's
« Reply #25 on: May 06, 2018, 0124 UTC »
1 sec PIP bouncing around the 40M band, again...
Seacoast of NH  RXR's =6 X SDR-iq's, SDRPlay, and an AirspyHF+. TXR's = 2 X TS-590S,  ANAN100D, 2 x IC-7300's. Antennas = Resonant wire dipoles, 120' end fed wires, or SteppIR 3 ele beam @ 70' fixed NE/SW directions.
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Offline WA4FHY

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UNID (TIME REBROADCAST?) 6959 kHz 2358 09may18 UTC
« Reply #26 on: May 10, 2018, 0237 UTC »
Did anyone else notice this transmission? It was on and off
several times this evening. I hit the SDR record at 2358. The sig
was S9+20 here. It reminded me of a kind of screwed up WWV
sound but there was never any announcements. At 000200 UTC
the sound changed and then it was off at 000500 UTC and I
haven't heard anymore this evening but I do think I've heard it
on other days. Best sound seemed to be in AM mode...
SDR-IQ / IC-R70 / IC-735 / FT-817ND, 5 band vertical & 4 position antenna switch
Near Music City, TN

Offline ChrisSmolinski

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Re: UNID (TIME REBROADCAST?) 6959 kHz 2358 09may18 UTC
« Reply #27 on: May 10, 2018, 1119 UTC »
I had this in my SDR recording, looks one of the digital UTEs that occasionally appears in the 43m band.
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 WA4FHY

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Re: UNID (TIME REBROADCAST?) 6959 kHz 2358 09may18 UTC
« Reply #28 on: May 10, 2018, 1308 UTC »
Thanks, Chris
I'm glad it wasn't just some local crud. Since a pic is worth 1K words,
here's a screenshot for Justin Case (anyone is curious). The shot is just as
the sound changed at 000200 UTC. With the volume turned up, I could hear
what sounded, to me, like 1 second time ticks.

I heard something similar ~a week ago but I was on the phone so
I just clicked mute. As I recall... I was looking at the 20 meter digital
area around 14100 kHz or so. The sig was gone by the time I got off the phone.
73, Paul
SDR-IQ / IC-R70 / IC-735 / FT-817ND, 5 band vertical & 4 position antenna switch
Near Music City, TN

Offline Traveling Wave

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All 1 PPS pip / pulse / tick logs here please
« Reply #29 on: May 20, 2018, 0318 UTC »
0316 UTC - PIP has been pulsing every second since 0312 UTC  on 6370. Signal S9 in WNY.
0329 UTC - PIP still going, signal drops to S7 at times.
0341 UTC - PIP still going, checked Web SDR's in N.E. Pa, Texas, Wash. D.C, and N. Utah and all are picking up the signal from S7 to S9. 
0408 UTC - PIP still going.
0420 UTC - PIP still going.
« Last Edit: May 20, 2018, 0419 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