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
385 Views
Last post November 02, 2019, 1651 UTC
by Ray Lalleu
0 Replies
318 Views
Last post September 04, 2020, 1725 UTC
by Ray Lalleu
0 Replies
394 Views
Last post July 26, 2021, 1728 UTC
by Ray Lalleu
0 Replies
347 Views
Last post May 13, 2022, 2333 UTC
by Ray Lalleu
4 Replies
491 Views
Last post May 05, 2024, 1901 UTC
by Fisherman
2 Replies
492 Views
Last post May 05, 2019, 2251 UTC
by Ray Lalleu
0 Replies
382 Views
Last post February 12, 2022, 1403 UTC
by Ray Lalleu
0 Replies
600 Views
Last post January 31, 2024, 1932 UTC
by Ray Lalleu
0 Replies
587 Views
Last post December 17, 2018, 1459 UTC
by Ray Lalleu
1 Replies
410 Views
Last post November 29, 2020, 1638 UTC
by FOX
0 Replies
233 Views
Last post September 04, 2022, 0916 UTC
by Ray Lalleu
2 Replies
387 Views
Last post September 10, 2024, 1656 UTC
by TRI International
0 Replies
345 Views
Last post September 15, 2019, 1048 UTC
by Ray Lalleu
1 Replies
402 Views
Last post June 06, 2021, 2303 UTC
by kris
0 Replies
272 Views
Last post March 27, 2025, 1815 UTC
by Ray Lalleu
0 Replies
345 Views
Last post February 28, 2021, 1009 UTC
by Ray Lalleu
1 Replies
401 Views
Last post December 29, 2021, 1919 UTC
by ChrisSmolinski
0 Replies
209 Views
Last post January 21, 2023, 1753 UTC
by Ray Lalleu
0 Replies
173 Views
Last post December 14, 2024, 1828 UTC
by Ray Lalleu
0 Replies
193 Views
Last post September 16, 2023, 2103 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 Garden Flag
by MitchellTimeDesigns