HFU HF Underground

Loggings => 10/11 meters => Topic started by: SkyWalker on May 24, 2026, 1013 UTC

Title: 27.055 MHz AM CB Channel 8 loop melody
Post by: SkyWalker on May 24, 2026, 1013 UTC

It happens to receive, when the propagation is strong, these strange melodies in 27MHz
https://www.youtube.com/watch?v=sUExxTTxjvc (https://www.youtube.com/watch?v=sUExxTTxjvc)

Mod edit: added mode and CB channel to title for archival and searching purposes.  27055 kHz 27,055 AM music loop music box loop signal UNID CB radio signal unknown music on CB radio channel 8 CB CH 8

Title: 27.055MHz loop melody
Post by: Dude111 on May 24, 2026, 1900 UTC

Wow isnt 11 something else??

Thanx for that!

Title: Re: 27.055MHz loop melody
Post by: QSLCollector on May 25, 2026, 1740 UTC

I feel like I have heard those melody (or melodies- seems to be one). Very, very old timey and European sounding like from a toy.

Title: Re: 27.055MHz loop melody
Post by: SkyWalker on May 25, 2026, 2205 UTC

This is my playlist of Unknown Melody in loop in 27MHz recorded in many years:
https://youtube.com/playlist?list=PLCUK1nnmHNxRTRJR98sxavbyKm4qIR4xj&si=LCRP0-yTxVsx-zKt (https://youtube.com/playlist?list=PLCUK1nnmHNxRTRJR98sxavbyKm4qIR4xj&si=LCRP0-yTxVsx-zKt)

Title: 27.055MHz loop melody
Post by: Dude111 on May 27, 2026, 2101 UTC

Thank you :)

Title: Re: 27.055MHz loop melody
Post by: Magic65 on July 25, 2026, 1329 UTC

Sounds a little like (it's a small world after all) old kids song!
 8)

Title: Re: 27.055MHz loop melody
Post by: R4002 on September 03, 2026, 2234 UTC

Almost reminds me of the digital mode ROS, which is usually heard on frequencies like 27.635 MHz (USB mode and also FM mode). 

It has also been heard on CB channel 24 and CB channel 25, which are 27.235 MHz and 27.245 MHz, respectively.  Those frequencies are usually home to regular AX.25 packet radio though. 

I've noticed it on 26.875 MHz FM, 26.885 MHz FM and 26.895 MHz FM as well when the band is open to Europe.

However...what you're hearing sounds more like an audio recording on a loop.  Interesting stuff.  Plus you're hearing AM mode signals, 27.055 MHz AM.  So that's CB channel 8 AM - 27055kHz 27.055 MHz AM.

Videos of ROS digital mode digimode on 11m / 27MHz:

27.635 MHz FM - received on the East Coast of the U.S. using a handheld scanner/receiver:

https://www.youtube.com/watch?v=Lvgf-9mMB-Y (https://www.youtube.com/watch?v=Lvgf-9mMB-Y)

27.635 MHz USB - ROS digital mode, plus data bursts on 27.640 MHz FM - received via UK based SDR:

https://www.youtube.com/watch?v=GOY9R1akmyA (https://www.youtube.com/watch?v=GOY9R1akmyA)

27.635 MHz - Russian station operation

https://www.youtube.com/watch?v=V5zFZ3UbGck (https://www.youtube.com/watch?v=V5zFZ3UbGck)