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Author Topic: UNID 6942 kHz 2350 UTC 1 Jun 2015  (Read 6593 times)

Offline ChrisSmolinski

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UNID 6942 kHz 2350 UTC 1 Jun 2015
« on: June 01, 2015, 2359 UTC »
I encountered this signal just now. Unfortunately there's storms in the area, so I only had time to take a quick snapshot of the waterfall before I disconnected the antenna:

« Last Edit: June 03, 2015, 1236 UTC by ChrisSmolinski »
Chris Smolinski
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Offline jFarley

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Re: UNID 6940 kHz 2350 UTC 1 Jun 2015
« Reply #1 on: June 02, 2015, 0024 UTC »
Noting the same here.  It looks symmetric about 6942
Joe Farley, Near Chicago
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Offline ChrisSmolinski

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Re: UNID 6940 kHz 2350 UTC 1 Jun 2015
« Reply #2 on: June 02, 2015, 2128 UTC »
It is back again. S9+10
Chris Smolinski
Westminster, MD
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Offline ChrisSmolinski

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Re: UNID 6940 kHz 2350 UTC 1 Jun 2015
« Reply #3 on: June 03, 2015, 1231 UTC »
I observed the signal strength of this station in the overnight SDR recording:

Starting at around 2130z it was about S9+15. It was about that much of the afternoon and evening, and was about S9+20 at 0640z, when it suddenly dropped in strength (with the characteristic selective fading of a station going long)  to about S9.

It then bounced around this strength for a while, came back up to s9+10 around 0705z, then dropped to S9 again around 0715z, and mostly faded out by around 0720z. It popped up again around 0740z for a few minutes.

It came back around 0928z, mostly in the S9 to S9+10 range.  Another fadeout 1014z to 1042z. Then back and forth a few times, between an S9 signal and almost nothing.

At 1122z there was a very dramatic jump from barely audible to s9+20, where the signal has remained since.

It is still very strong as I type this at 1224z.

Checking a webSDR, K2SDR in NJ, it is audible there. Also on W1GIV in CT, and very weak but present on the MI webSDR.

There was just a brief increase to S9+30 here around 1226z.

I'd summarize the above by saying that the signal reception here is via NVIS propagation, with a period from 0640z to 1122z when foF2 was [generally] too low. I say generally because the signal was not completely gone during the period.

It certainly seems to be somewhere in the northeast US, or extreme southeast Canada. Perhaps some additional daytime reception reports could help narrow down the approximate location?

Update: The station went QRT at 1338z.
« Last Edit: June 03, 2015, 1344 UTC by ChrisSmolinski »
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline audiokaos

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Re: UNID 6942 kHz 2350 UTC 1 Jun 2015
« Reply #4 on: June 03, 2015, 1533 UTC »
I'm in Southern Ontario. I've set up the frequency on my HT & will monitor it during the day - Hopefully it comes back on.
Using Kenwood TS930SAT, Dipole cut for 15M
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Fansome

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Re: UNID 6942 kHz 2350 UTC 1 Jun 2015
« Reply #5 on: June 03, 2015, 2031 UTC »
Nothing here in the southeast at 20:30.

Offline RCCI

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Re: UNID 6942 kHz 2350 UTC 1 Jun 2015
« Reply #6 on: June 04, 2015, 1719 UTC »
I too noted the mystery signal in the evening of 06/01/15. Here, it was giving VERY fat signal reaching an over/under spread of 6938-6946 kHz.
+ Equipment: Yaesu FRG 100B, Kenwood R-1000, Yaesu FRG7,
+ Antenna: 75' dipole, height 21', running north and south.  Chicagoland area.
 *** QSLs welcomed at: gangwise1997@yahoo.com   Thanks!   ...Steve

 

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