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Loggings => HF Mystery Signals => Topic started by: IQ_imbalance on January 11, 2019, 0202 UTC

Title: UNID 8000 kHz 1434 UTC 10 Jan 2019 signal
Post by: IQ_imbalance on January 11, 2019, 0202 UTC
Strong carrier (-85 dBm at my location currently); about 3Hz wide; might be LSB?.  Has been on since at least 1434 UTC 10 Jan.  TDoA during the day (~2000 UTC) suggests possibly two transmitters...one east coast, one midwest.  (https://i.imgur.com/sJ3hcxc.png)
(https://i.imgur.com/q4aCJab.png)
(https://i.imgur.com/0L9um90.png)
Title: Re: UNID 8000kHz persistent signal
Post by: CaptnKliegle on January 11, 2019, 0338 UTC
03:30 UTC 1-11-2019  -35dBm on a 51' vertical and -60dBm on a 124' EFW at +100' AGL.

Appears to be some modulation? See the tick marks:

(https://imgur.com/ipcJZEq)
Title: Re: UNID 8000kHz persistent signal
Post by: CaptnKliegle on January 11, 2019, 0339 UTC
Image didn't get posted...

https://imgur.com/ipcJZEq
Title: Re: UNID 8000kHz persistent signal
Post by: Boriken on January 11, 2019, 0340 UTC
Strong here in western NC. Can even hear it on a single MPF102 regen & 25ft of wire.
Title: Re: UNID 8000kHz persistent signal
Post by: Traveling Wave on January 11, 2019, 0525 UTC
0522 UTC - Carrier signal is S7 in WNY, and peaking to S9.
Title: Re: UNID 8000kHz persistent signal
Post by: ChrisSmolinski on January 11, 2019, 1102 UTC
Still there at 1102 UTC 11 Jan 2019.
Title: Re: UNID 8000kHz persistent signal
Post by: IQ_imbalance on January 11, 2019, 1723 UTC
Back on for ~4 min 1719-1723 UTC 11 Jan and intermittently for a few minutes after:  TDoA suggests not on the east coast this time:
(https://i.imgur.com/cJu6Uh2.png)
Title: Re: UNID 8000kHz persistent signal
Post by: Beerus Maximus on January 11, 2019, 1726 UTC
Active, on and off here at 1725 UTC on Jan 11. Some pulsing/fluttering was noted on one of the "key downs" and then the signal was stronger. Almost like maybe an antenna tuner of some kind was quickly trying to match an antenna. Very strong here, S9+15.
Title: Re: UNID 8000kHz persistent signal
Post by: Josh on January 11, 2019, 1911 UTC
Copied here too @ 1910Z, S5/8.