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
249 Views
Last post December 03, 2024, 0835 UTC
by TRI International
0 Replies
412 Views
Last post August 13, 2023, 1002 UTC
by TRI International
0 Replies
293 Views
Last post June 06, 2024, 0811 UTC
by TRI International
0 Replies
216 Views
Last post May 09, 2024, 0925 UTC
by TRI International
0 Replies
249 Views
Last post June 27, 2024, 0903 UTC
by TRI International
1 Replies
247 Views
Last post December 25, 2023, 2040 UTC
by europirate
0 Replies
402 Views
Last post August 13, 2023, 0957 UTC
by TRI International
0 Replies
300 Views
Last post June 18, 2024, 0721 UTC
by TRI International
0 Replies
221 Views
Last post July 27, 2024, 1031 UTC
by TRI International
0 Replies
361 Views
Last post December 30, 2023, 1228 UTC
by TRI International
0 Replies
238 Views
Last post September 20, 2024, 0830 UTC
by TRI International
0 Replies
333 Views
Last post December 31, 2023, 1210 UTC
by TRI International
0 Replies
380 Views
Last post May 09, 2024, 1244 UTC
by TRI International
0 Replies
260 Views
Last post May 05, 2024, 2036 UTC
by TRI International
0 Replies
314 Views
Last post December 26, 2023, 1929 UTC
by TRI International
1 Replies
395 Views
Last post April 20, 2025, 1917 UTC
by europirate
0 Replies
360 Views
Last post March 11, 2025, 0945 UTC
by TRI International
0 Replies
408 Views
Last post April 06, 2025, 1240 UTC
by TRI International
0 Replies
331 Views
Last post December 25, 2023, 1110 UTC
by TRI International
0 Replies
268 Views
Last post December 25, 2023, 2221 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 Garden Flag
by MitchellTimeDesigns