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Author Topic: 17.446500 MHz 07/23/2024 22:00 UTC Odd signal  (Read 1209 times)

Offline UtilitySeattle

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17.446500 MHz 07/23/2024 22:00 UTC Odd signal
« on: July 23, 2024, 2211 UTC »
Not seen this one before. Thought it was QRM but then the fading. Here is a 60 second recording and some screen grabs.

https://voca.ro/18i24LyndhSa

https://prnt.sc/pE5GHsvVhWbf
https://prnt.sc/SwhqSecMF0-j
« Last Edit: July 23, 2024, 2213 UTC by UtilitySeattle »
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SDRPlay RSP Pro and RSPdx-R2  MLA 30+ and drain pipe. Everett, Snohomish County Washington USA CN87VV

Offline BoomboxDX

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Re: 17.446500 MHz 07/23/2024 22:00 UTC Odd signal
« Reply #1 on: July 25, 2024, 0032 UTC »
Sounds like it may have been propagating. Any idea of the changes in signal strength?
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An AM radio Boombox DXer.
+ GE SRIII, PR-D5 & TRF on MW.
The usual Realistic culprits on SW (and a Panasonic).

Offline UtilitySeattle

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Re: 17.446500 MHz 07/23/2024 22:00 UTC Odd signal
« Reply #2 on: July 25, 2024, 0801 UTC »
Just over the noise floor for the most part. Would get strong enough to get 1 S unit over the floor and then fade down to just barely audible.
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SDRPlay RSP Pro and RSPdx-R2  MLA 30+ and drain pipe. Everett, Snohomish County Washington USA CN87VV

Offline northern_dxer

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Re: 17.446500 MHz 07/23/2024 22:00 UTC Odd signal
« Reply #3 on: July 25, 2024, 2136 UTC »
The spectrum looks similar to a signal that I have observed several times on broadcast frequencies. Many evenly spaced lines, hard to count the number. I have suspected that it might be a jammer. Or an idling Russian data mode, perhaps with a broken transmitter. But the audio is not quite the same.

I think this one might even be a radar of some kind, but this is just guessing. Possibly a scientific one (ionospheric studies or meteor detection).
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Offline UtilitySeattle

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Re: 17.446500 MHz 07/23/2024 22:00 UTC Odd signal
« Reply #4 on: August 15, 2024, 0051 UTC »
Getting same on 4.535 at 00:50 UTC. Anyone else?
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SDRPlay RSP Pro and RSPdx-R2  MLA 30+ and drain pipe. Everett, Snohomish County Washington USA CN87VV
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