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
6 Replies
1024 Views
Last post August 13, 2019, 2029 UTC
by Claudio Italy
1 Replies
305 Views
Last post August 10, 2024, 1711 UTC
by achim
0 Replies
333 Views
Last post November 06, 2020, 1532 UTC
by Ray Lalleu
1 Replies
671 Views
Last post November 04, 2018, 1149 UTC
by John Vinther Nielsen
1 Replies
270 Views
Last post January 07, 2024, 0833 UTC
by RobRich
0 Replies
377 Views
Last post January 11, 2022, 1653 UTC
by Ray Lalleu
0 Replies
312 Views
Last post May 01, 2020, 2207 UTC
by Ray Lalleu
0 Replies
465 Views
Last post April 09, 2019, 1849 UTC
by Ray Lalleu
2 Replies
202 Views
Last post April 11, 2025, 0725 UTC
by Benoit LEVEQUE
0 Replies
337 Views
Last post April 17, 2022, 0721 UTC
by Ray Lalleu
0 Replies
331 Views
Last post August 03, 2020, 2104 UTC
by Ray Lalleu
3 Replies
567 Views
Last post October 03, 2019, 1848 UTC
by Ray Lalleu
3 Replies
353 Views
Last post September 28, 2024, 2009 UTC
by FOX
1 Replies
310 Views
Last post October 03, 2023, 0729 UTC
by dave1965
0 Replies
228 Views
Last post September 25, 2022, 1552 UTC
by Ray Lalleu
2 Replies
596 Views
Last post October 09, 2021, 1848 UTC
by kobalts
1 Replies
396 Views
Last post February 02, 2020, 1006 UTC
by KaySeeks
1 Replies
174 Views
Last post December 28, 2024, 1725 UTC
by Princo
0 Replies
460 Views
Last post May 24, 2019, 1841 UTC
by Ray Lalleu
1 Replies
314 Views
Last post May 27, 2024, 1949 UTC
by Fisherman

 

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