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
495 Views
Last post December 11, 2018, 1539 UTC
by Ray Lalleu
0 Replies
172 Views
Last post October 27, 2025, 1705 UTC
by Ray Lalleu
0 Replies
378 Views
Last post January 28, 2024, 1922 UTC
by Ray Lalleu
0 Replies
379 Views
Last post January 15, 2023, 1755 UTC
by Ray Lalleu
0 Replies
466 Views
Last post February 06, 2022, 1338 UTC
by Ray Lalleu
0 Replies
381 Views
Last post February 24, 2021, 1614 UTC
by Ray Lalleu
0 Replies
493 Views
Last post May 20, 2020, 2037 UTC
by Ray Lalleu
0 Replies
456 Views
Last post May 03, 2019, 1833 UTC
by Ray Lalleu
0 Replies
444 Views
Last post May 12, 2021, 1800 UTC
by Ray Lalleu
0 Replies
279 Views
Last post May 02, 2024, 1830 UTC
by Ray Lalleu
1 Replies
326 Views
Last post July 04, 2023, 2051 UTC
by kris
2 Replies
576 Views
Last post August 31, 2020, 2259 UTC
by CoolAM Radio
0 Replies
406 Views
Last post October 30, 2019, 0851 UTC
by Ray Lalleu
0 Replies
186 Views
Last post August 09, 2025, 0831 UTC
by Ray Lalleu
1 Replies
556 Views
Last post November 03, 2021, 1649 UTC
by kris
0 Replies
391 Views
Last post March 04, 2020, 1542 UTC
by Ray Lalleu
0 Replies
260 Views
Last post January 26, 2025, 1743 UTC
by Ray Lalleu
0 Replies
295 Views
Last post March 09, 2023, 2013 UTC
by Ray Lalleu
0 Replies
409 Views
Last post April 07, 2021, 1624 UTC
by Ray Lalleu
0 Replies
512 Views
Last post June 26, 2019, 1928 UTC
by Ray Lalleu

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns