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
229 Views
Last post July 27, 2025, 0435 UTC
by DXrafaelcolDX
0 Replies
252 Views
Last post June 22, 2025, 1432 UTC
by TRI International
0 Replies
262 Views
Last post July 23, 2025, 2004 UTC
by East Troy Don
0 Replies
262 Views
Last post June 26, 2025, 0103 UTC
by n2avh
0 Replies
267 Views
Last post July 01, 2025, 1728 UTC
by n2avh
0 Replies
271 Views
Last post August 12, 2023, 1246 UTC
by TRI International
0 Replies
271 Views
Last post September 03, 2023, 1006 UTC
by TRI International
0 Replies
272 Views
Last post September 03, 2023, 0942 UTC
by TRI International
0 Replies
272 Views
Last post January 25, 2023, 1641 UTC
by Shortwave_Listener
0 Replies
273 Views
Last post December 01, 2024, 0956 UTC
by TRI International
0 Replies
273 Views
Last post August 23, 2024, 0906 UTC
by TRI International
0 Replies
273 Views
Last post November 20, 2023, 1240 UTC
by Paul65
0 Replies
273 Views
Last post September 28, 2023, 1234 UTC
by Paul65
0 Replies
274 Views
Last post September 16, 2023, 1007 UTC
by TRI International
0 Replies
274 Views
Last post August 18, 2023, 1206 UTC
by TRI International
0 Replies
274 Views
Last post December 23, 2023, 1308 UTC
by RobRich
0 Replies
275 Views
Last post May 27, 2024, 1825 UTC
by N2MLP
0 Replies
275 Views
Last post July 31, 2023, 2028 UTC
by ~SIGINT~
0 Replies
275 Views
Last post August 18, 2023, 1200 UTC
by TRI International
0 Replies
275 Views
Last post December 10, 2022, 1558 UTC
by Ct Yankee

 

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