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
562 Views
Last post January 06, 2022, 1405 UTC
by dxace1
0 Replies
416 Views
Last post January 29, 2021, 2353 UTC
by Ray Lalleu
0 Replies
463 Views
Last post March 31, 2019, 1938 UTC
by Ray Lalleu
0 Replies
392 Views
Last post April 11, 2022, 1626 UTC
by Ray Lalleu
0 Replies
550 Views
Last post June 04, 2018, 1702 UTC
by Ray Lalleu
1 Replies
248 Views
Last post July 04, 2025, 1918 UTC
by RadioLongWire
0 Replies
242 Views
Last post September 27, 2023, 2005 UTC
by Ray Lalleu
0 Replies
250 Views
Last post December 22, 2024, 2302 UTC
by Ray Lalleu
1 Replies
440 Views
Last post March 08, 2021, 1710 UTC
by kris
0 Replies
565 Views
Last post May 16, 2019, 2003 UTC
by Ray Lalleu
0 Replies
266 Views
Last post April 05, 2025, 0752 UTC
by Ray Lalleu
0 Replies
239 Views
Last post May 26, 2023, 1957 UTC
by Ray Lalleu
0 Replies
437 Views
Last post September 27, 2019, 1655 UTC
by Ray Lalleu
0 Replies
478 Views
Last post August 17, 2018, 2010 UTC
by Ray Lalleu
1 Replies
319 Views
Last post September 21, 2024, 2025 UTC
by Fisherman
0 Replies
310 Views
Last post November 05, 2023, 1813 UTC
by Ray Lalleu
3 Replies
619 Views
Last post September 17, 2022, 1959 UTC
by TRI International
0 Replies
451 Views
Last post December 30, 2018, 1747 UTC
by Ray Lalleu
2 Replies
521 Views
Last post February 09, 2024, 1158 UTC
by Fisherman
0 Replies
367 Views
Last post February 20, 2022, 1628 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