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
342 Views
Last post February 07, 2020, 1256 UTC
by Ray Lalleu
0 Replies
358 Views
Last post December 17, 2020, 1723 UTC
by Ray Lalleu
0 Replies
399 Views
Last post October 13, 2021, 1355 UTC
by Ray Lalleu
0 Replies
386 Views
Last post October 02, 2022, 0733 UTC
by Ray Lalleu
0 Replies
238 Views
Last post October 07, 2023, 1702 UTC
by Ray Lalleu
1 Replies
246 Views
Last post July 14, 2025, 1619 UTC
by Alex BLR
1 Replies
555 Views
Last post June 23, 2018, 2106 UTC
by kris
0 Replies
412 Views
Last post October 06, 2019, 1040 UTC
by Ray Lalleu
0 Replies
352 Views
Last post August 08, 2020, 2152 UTC
by Ray Lalleu
4 Replies
417 Views
Last post June 04, 2023, 1000 UTC
by TRI International
0 Replies
340 Views
Last post May 03, 2020, 1655 UTC
by Ray Lalleu
1 Replies
421 Views
Last post January 16, 2022, 1056 UTC
by Bali_Frank
0 Replies
439 Views
Last post November 10, 2018, 0858 UTC
by Ray Lalleu
0 Replies
379 Views
Last post November 08, 2020, 1135 UTC
by Ray Lalleu
0 Replies
354 Views
Last post July 31, 2022, 1719 UTC
by Ray Lalleu
3 Replies
516 Views
Last post August 15, 2024, 1908 UTC
by Robertas
0 Replies
398 Views
Last post May 14, 2021, 2059 UTC
by Ray Lalleu
0 Replies
358 Views
Last post April 06, 2024, 2048 UTC
by Ray Lalleu
0 Replies
329 Views
Last post March 03, 2025, 1631 UTC
by Ray Lalleu
1 Replies
572 Views
Last post April 13, 2019, 1956 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