We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

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1
Shortwave Broadcast / Re: UNID (Mexico??) 6185 AM 0136 UTC 26 MAY 2024
« Last post by Fisherman on Today at 15:16 »
Most likely Radio Educacion in Mexico City - Can be heard in Ireland in the early hours of the morning
2
European Pirates and Private Stations / MOVED: UNID 6195 AM 0138 UTC 26 MAY 2024
« Last post by Ray Lalleu on Today at 14:51 »
This topic has been moved to Shortwave Broadcast.

https://www.hfunderground.com/board/index.php?topic=129953.0
3
European Pirates and Private Stations / MOVED: UNID (Mexico??) 6185 AM 0136 UTC 26 MAY 2024
« Last post by Ray Lalleu on Today at 14:51 »
This topic has been moved to Shortwave Broadcast.

https://www.hfunderground.com/board/index.php?topic=129951.0
4
European Pirates and Private Stations / MOVED: WBCQ (tentative) 6160 AM 0134 UTC 26 MAY 2024
« Last post by Ray Lalleu on Today at 14:50 »
This topic has been moved to Shortwave Broadcast.

https://www.hfunderground.com/board/index.php?topic=129950.0
5
Peskies / Re: English language peskies 6.967 usb 22:30 utc nov 06
« Last post by R4002 on Today at 14:38 »
Fishing boats?  Did they have a New England accent? 

Nice catch, 6967 kHz USB could be one of any number of things (or, more than likely, it is free band / out of band operators)
6
Peskies / Re: Peskies 'Whistle Net' 8281.2 USB 2024
« Last post by R4002 on Today at 14:37 »
Interesting frequency choice.  Whistling is pretty popular as a "selective calling" method over HF SSB marine nets. 

8281.2 kHz does fall within the legal 8 MHz marine band allocation 8195 kHz to 8895 kHz 8.195 MHz to 8895 MHz. 

Going by the ITU channel plan / band plan, 8282 kHz is the closest "channel" but those are more like guidelines than rules. 

8282 kHz is part of the ITU dual use (simplex for ship to ship, duplex or "split" operation for ship to shore radio) channel plan, specifically channel 830 frequency 8282kHz USB 8.282 MHz USB (ship transmit) paired with 8806kHz USB 8.806 MHz USB.  For ship to ship purposes, using a single frequency is the common practice, and makes the most sense.

The ITU actually only has a handful of designated simplex frequencies on the MF and HF frequencies:

Most of them are in the 2 MHz and 4 MHz bands.  8MHz band only has 8294 kHz and 8297 kHz, plus numerous frequencies in the shared fixed/mobile allocation 8000 kHz to 8195 kHz sub-band: 8101 kHz to 8191 kHz - much like the 4 MHz simplex frequencies 4000 kHz to 4060 kHz (3 kHz spacing - 4000 kHz USB, 4003 kHz USB, 4006 kHz USB, etc.)

8101 kHz USB
8104 kHz USB
8107 kHz USB
8110 kHz USB
8113 kHz USB
8116 kHz USB
8119 kHz USB
8122 kHz USB
8125 kHz USB
8128 kHz USB
8131 kHz USB
8134 kHz USB
8137 kHz USB
8140 kHz USB
8143 kHz USB
8146 kHz USB
8149 kHz USB
8152 kHz USB
8155 kHz USB
8158 kHz USB
8161 kHz USB
8164 kHz USB
8167 kHz USB
8170 kHz USB
8173 kHz USB
8176 kHz USB
8179 kHz USB
8182 kHz USB
8185 kHz USB
8188 kHz USB
8191 kHz USB


7
European Pirates and Private Stations / BLACKOUT 1430 UTC 29 MAY 2024
« Last post by Ray Lalleu on Today at 14:36 »
49m to 31m : all signals gone at 1430 UTC
8
Other / Re: ruZZian cringe 6218 USB 2212 UTC 25 MAY 2024
« Last post by R4002 on Today at 14:27 »
These are apparently part of Russian military channel markers (well, a new series of channel markers).  Music (including the Soviet National Anthem, a rock version of the Soviet / Russian National Anthem, various WWII (sorry, I meant The Great Patriotic War) patriotic songs including the famous "Katyusha", sound effects including buzz buzz buzz (think UVB-76 / "The Buzzer" on 4625 kHz), an air raid siren, an alarm, what sounds like a tennis racket or ticking clock or other similar sound, the "pip" and other feeds. 

At various times, the recording loop is cut off and messages are sent.  These signals have been heard by numerous listeners and a large number of them are on YouTube

They've been logged on:

4675 kHz USB
5780 kHz USB
5838 kHz USB
5838.5 kHz USB
6180 kHz USB
6218 kHz USB
6230 kHz USB
6318 kHz USB
6322 kHz USB
6330 kHz USB
6402 kHz USB
6911 kHz USB
6930 kHz USB
7032 kHz USB that's right, more Russians in 40 meters!  7.032 MHz USB 7,032 kHz 7032kHz USB
8001 kHz USB
8514 kHz USB
9001 kHz USB
9041 kHz USB
9310 kHz USB

I'm sure the list above is incomplete.  I'm not including 7050 kHz LSB and 7055 kHz LSB...plus the dozens of other frequencies used by the Russian military.  Yes, 7032 kHz is in USB mode, not LSB mode. 

I can confirm that 6910 kHz USB, 6930 kHz USB, 6218 kHz USB and 6230 kHz USB are active as of 28 May 2024 (listening via a UK based remote SDR receiver). 
9
European Pirates and Private Stations / Kobus Radio (pres.) 6290 LSB 2254 UTC 25 MAY 2024
« Last post by Ray Lalleu on Today at 14:02 »
Quote from: kris on May 25, 2024, 2223 UTC
...
2238 Yes it's Johnny over I'm gonna be a country girl again, shout out to me! Hello nice night!
2254 and it turned off, some kind of very low power test (S9) or a failure?
        - oho, it's  LSB modulation!
2305 bad heard some words  https://voca.ro/110un7L5i8vw

edit by Ray : the station in LSB at 2254-2305 must be another station, probably Kobus Radio
10
North American Shortwave Pirate / Re: Pescadores Radio 6925 USB 1216 UTC 29 MAY 2025
« Last post by hammarhead on Today at 13:04 »
S4 signal here this morning at 1215 UTC. Talking about "my body"
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