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.

Subject / Started by Last post
0 Replies
569 Views
Last post November 03, 2022, 2141 UTC
by Ray Lalleu
1 Replies
565 Views
Last post December 26, 2022, 1532 UTC
by Ray Lalleu
1 Replies
561 Views
Last post April 25, 2022, 2050 UTC
by kris
0 Replies
561 Views
Last post October 27, 2023, 1305 UTC
by kris
0 Replies
559 Views
Last post July 26, 2021, 2345 UTC
by kris
1 Replies
556 Views
Last post April 01, 2022, 2049 UTC
by kris
0 Replies
553 Views
Last post September 09, 2022, 2152 UTC
by kris
1 Replies
553 Views
Last post October 14, 2023, 1131 UTC
by manfredo
0 Replies
552 Views
Last post August 24, 2022, 1416 UTC
by kris
0 Replies
551 Views
Last post September 19, 2023, 1043 UTC
by TRI International
0 Replies
551 Views
Last post December 27, 2021, 0230 UTC
by radiorandy
0 Replies
550 Views
Last post December 22, 2021, 2210 UTC
by liduck
1 Replies
548 Views
Last post February 09, 2023, 0256 UTC
by Pigmeat
0 Replies
548 Views
Last post March 13, 2022, 1616 UTC
by Ray Lalleu
1 Replies
546 Views
Last post August 26, 2023, 2004 UTC
by N2MLP
0 Replies
543 Views
Last post September 29, 2022, 2108 UTC
by ~SIGINT~
0 Replies
543 Views
Last post March 17, 2022, 1904 UTC
by kris
10162 CW

Started by Marcy1

0 Replies
543 Views
Last post March 30, 2022, 2221 UTC
by Marcy1
0 Replies
543 Views
Last post March 30, 2023, 0542 UTC
by Shortwave_Listener
1 Replies
540 Views
Last post December 02, 2022, 1928 UTC
by kris

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns