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
1 Replies
517 Views
Last post February 13, 2022, 0841 UTC
by Bali_Frank
1 Replies
521 Views
Last post May 23, 2020, 2200 UTC
by ChrisSmolinski
0 Replies
262 Views
Last post May 04, 2025, 1906 UTC
by Ray Lalleu
0 Replies
249 Views
Last post July 12, 2023, 1901 UTC
by Ray Lalleu
0 Replies
401 Views
Last post May 14, 2022, 1939 UTC
by Ray Lalleu
0 Replies
400 Views
Last post September 05, 2020, 0832 UTC
by Ray Lalleu
0 Replies
440 Views
Last post November 03, 2019, 1113 UTC
by Ray Lalleu
0 Replies
162 Views
Last post August 12, 2025, 2039 UTC
by Ray Lalleu
0 Replies
381 Views
Last post October 31, 2022, 1622 UTC
by Ray Lalleu
2 Replies
547 Views
Last post November 07, 2021, 1715 UTC
by Bali_Frank
0 Replies
350 Views
Last post January 07, 2021, 1406 UTC
by Ray Lalleu
0 Replies
388 Views
Last post March 08, 2020, 1536 UTC
by Ray Lalleu
2 Replies
655 Views
Last post July 04, 2019, 0048 UTC
by Ct Yankee
0 Replies
483 Views
Last post June 25, 2022, 1655 UTC
by Ray Lalleu
0 Replies
536 Views
Last post October 06, 2018, 0810 UTC
by Ray Lalleu
1 Replies
155 Views
Last post September 21, 2025, 0935 UTC
by TRI International
2 Replies
645 Views
Last post December 12, 2023, 0347 UTC
by Shortwave_Listener
0 Replies
416 Views
Last post December 19, 2021, 1000 UTC
by Ray Lalleu
1 Replies
486 Views
Last post April 11, 2020, 0946 UTC
by KaySeeks
2 Replies
686 Views
Last post February 27, 2019, 2334 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 T-Shirt
by MitchellTimeDesigns