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
168 Views
Last post November 28, 2024, 1940 UTC
by Ray Lalleu
0 Replies
366 Views
Last post December 24, 2019, 1445 UTC
by Ray Lalleu
1 Replies
392 Views
Last post August 26, 2023, 1836 UTC
by kris
0 Replies
686 Views
Last post April 20, 2018, 1851 UTC
by Ray Lalleu
1 Replies
437 Views
Last post August 25, 2019, 1540 UTC
by texas1dxer
0 Replies
304 Views
Last post July 03, 2020, 1854 UTC
by Ray Lalleu
3 Replies
761 Views
Last post May 22, 2021, 1323 UTC
by TRI International
0 Replies
353 Views
Last post March 23, 2022, 1915 UTC
by Ray Lalleu
0 Replies
219 Views
Last post March 05, 2024, 1639 UTC
by Ray Lalleu
1 Replies
234 Views
Last post March 11, 2025, 1735 UTC
by Alex BLR
0 Replies
409 Views
Last post February 24, 2019, 0825 UTC
by Ray Lalleu
0 Replies
299 Views
Last post April 09, 2020, 0901 UTC
by Ray Lalleu
0 Replies
358 Views
Last post January 03, 2021, 1821 UTC
by Ray Lalleu
1 Replies
293 Views
Last post October 29, 2022, 1954 UTC
by kris
1 Replies
654 Views
Last post October 01, 2018, 2019 UTC
by ralf_bender
0 Replies
314 Views
Last post October 09, 2020, 1203 UTC
by Ray Lalleu
0 Replies
309 Views
Last post June 22, 2022, 0756 UTC
by Ray Lalleu
2 Replies
561 Views
Last post June 29, 2019, 1809 UTC
by Brian
1 Replies
257 Views
Last post March 11, 2023, 1922 UTC
by kris
3 Replies
457 Views
Last post January 30, 2025, 2029 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