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
314 Views
Last post December 25, 2022, 0004 UTC
by Ct Yankee
0 Replies
314 Views
Last post September 10, 2023, 2107 UTC
by Paul B. Walker, Jr.
0 Replies
314 Views
Last post December 13, 2024, 1643 UTC
by East Troy Don
0 Replies
314 Views
Last post December 22, 2022, 0041 UTC
by Shortwave_Listener
0 Replies
313 Views
Last post June 19, 2025, 1301 UTC
by TRI International
0 Replies
313 Views
Last post November 18, 2024, 0917 UTC
by TRI International
0 Replies
313 Views
Last post November 20, 2023, 1246 UTC
by Paul65
0 Replies
313 Views
Last post July 29, 2023, 0519 UTC
by ~SIGINT~
0 Replies
313 Views
Last post February 04, 2023, 0425 UTC
by RobRich
0 Replies
313 Views
Last post June 01, 2024, 1743 UTC
by N2MLP
0 Replies
313 Views
Last post November 21, 2023, 1142 UTC
by TRI International
0 Replies
313 Views
Last post May 14, 2023, 1213 UTC
by radiorandy
0 Replies
313 Views
Last post December 07, 2022, 1938 UTC
by Ct Yankee
0 Replies
313 Views
Last post October 02, 2023, 0939 UTC
by TRI International
0 Replies
312 Views
Last post December 26, 2022, 1145 UTC
by TRI International
0 Replies
312 Views
Last post March 02, 2024, 1929 UTC
by Paul65
0 Replies
312 Views
Last post December 10, 2022, 2252 UTC
by Ct Yankee
0 Replies
312 Views
Last post January 22, 2023, 1101 UTC
by Ct Yankee
0 Replies
312 Views
Last post December 09, 2022, 1642 UTC
by Ct Yankee
0 Replies
312 Views
Last post October 13, 2023, 0926 UTC
by TRI International

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns