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 permissable in your locale.

Subject / Started by Last post
0 Replies
563 Views
Last post March 04, 2021, 1746 UTC
by ~SIGINT~
2 Replies
374 Views
Last post September 06, 2022, 0006 UTC
by Josh
0 Replies
462 Views
Last post July 21, 2021, 2225 UTC
by ~SIGINT~
0 Replies
238 Views
Last post September 29, 2022, 2108 UTC
by ~SIGINT~
0 Replies
297 Views
Last post July 28, 2022, 2111 UTC
by ~SIGINT~
0 Replies
173 Views
Last post September 17, 2022, 0123 UTC
by ~SIGINT~
2 Replies
306 Views
Last post September 02, 2022, 0056 UTC
by ~SIGINT~
3 Replies
800 Views
Last post March 24, 2022, 2323 UTC
by ~SIGINT~
1 Replies
418 Views
Last post July 18, 2022, 2142 UTC
by Josh

 

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