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
212 Views
Last post December 24, 2023, 1603 UTC
by Ray Lalleu
0 Replies
271 Views
Last post March 25, 2025, 1525 UTC
by Ray Lalleu
0 Replies
245 Views
Last post May 13, 2023, 2133 UTC
by Ray Lalleu
0 Replies
451 Views
Last post June 06, 2021, 0720 UTC
by Ray Lalleu
1 Replies
463 Views
Last post September 14, 2019, 1613 UTC
by Ray Lalleu
0 Replies
272 Views
Last post September 08, 2024, 1828 UTC
by Ray Lalleu
1 Replies
302 Views
Last post September 02, 2022, 2328 UTC
by kris
0 Replies
396 Views
Last post December 16, 2018, 1043 UTC
by Ray Lalleu
0 Replies
261 Views
Last post January 30, 2024, 1639 UTC
by Ray Lalleu
1 Replies
507 Views
Last post February 11, 2022, 1705 UTC
by dxace1
3 Replies
685 Views
Last post February 27, 2021, 1420 UTC
by TRI International
0 Replies
396 Views
Last post May 05, 2019, 1549 UTC
by Ray Lalleu
0 Replies
168 Views
Last post July 08, 2023, 1924 UTC
by Ray Lalleu
0 Replies
365 Views
Last post May 13, 2022, 1522 UTC
by Ray Lalleu
0 Replies
688 Views
Last post July 24, 2021, 2317 UTC
by Ray Lalleu
1 Replies
444 Views
Last post September 03, 2020, 1740 UTC
by Bali_Frank
0 Replies
409 Views
Last post November 01, 2019, 2111 UTC
by Ray Lalleu
4 Replies
797 Views
Last post October 28, 2023, 2344 UTC
by N2MLP
1 Replies
385 Views
Last post March 06, 2020, 2215 UTC
by Ray Lalleu
1 Replies
199 Views
Last post January 31, 2025, 1810 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 House Flag
by MitchellTimeDesigns