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
281 Views
Last post December 08, 2020, 1621 UTC
by Ray Lalleu
0 Replies
344 Views
Last post March 16, 2020, 1557 UTC
by Ray Lalleu
0 Replies
382 Views
Last post December 31, 2018, 1317 UTC
by Ray Lalleu
0 Replies
269 Views
Last post February 09, 2024, 1947 UTC
by Ray Lalleu
0 Replies
384 Views
Last post February 21, 2022, 0954 UTC
by Ray Lalleu
0 Replies
375 Views
Last post May 30, 2020, 2017 UTC
by Ray Lalleu
1 Replies
194 Views
Last post July 22, 2023, 2349 UTC
by N2MLP
0 Replies
518 Views
Last post November 12, 2019, 1902 UTC
by Ray Lalleu
0 Replies
183 Views
Last post October 30, 2024, 1718 UTC
by Ray Lalleu
0 Replies
471 Views
Last post January 16, 2021, 0820 UTC
by Ray Lalleu
2 Replies
700 Views
Last post March 10, 2019, 2110 UTC
by Skipmuck
0 Replies
149 Views
Last post February 09, 2025, 1659 UTC
by Ray Lalleu
0 Replies
331 Views
Last post April 21, 2021, 1829 UTC
by Ray Lalleu
0 Replies
336 Views
Last post July 13, 2020, 1647 UTC
by Ray Lalleu
1 Replies
607 Views
Last post July 12, 2019, 1913 UTC
by cj468
0 Replies
555 Views
Last post May 13, 2018, 1933 UTC
by Ray Lalleu
2 Replies
547 Views
Last post June 16, 2025, 2143 UTC
by kris
1 Replies
355 Views
Last post October 20, 2020, 1825 UTC
by kris
0 Replies
493 Views
Last post October 13, 2018, 2308 UTC
by Ray Lalleu
1 Replies
403 Views
Last post December 19, 2023, 2011 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 Garden Flag
by MitchellTimeDesigns