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
284 Views
Last post November 22, 2020, 0927 UTC
by Ray Lalleu
2 Replies
613 Views
Last post December 31, 2019, 1637 UTC
by dxace1
2 Replies
821 Views
Last post December 02, 2018, 1726 UTC
by Ray Lalleu
0 Replies
396 Views
Last post January 26, 2024, 1746 UTC
by Ray Lalleu
0 Replies
412 Views
Last post February 01, 2022, 1445 UTC
by Ray Lalleu
1 Replies
529 Views
Last post February 19, 2021, 2251 UTC
by kris
2 Replies
360 Views
Last post April 25, 2024, 2130 UTC
by kris
1 Replies
461 Views
Last post May 06, 2022, 1852 UTC
by kris
0 Replies
352 Views
Last post August 27, 2020, 1415 UTC
by Ray Lalleu
0 Replies
495 Views
Last post July 18, 2018, 1849 UTC
by Ray Lalleu
1 Replies
122 Views
Last post August 03, 2025, 1650 UTC
by prldx
0 Replies
461 Views
Last post February 28, 2020, 1810 UTC
by Ray Lalleu
0 Replies
183 Views
Last post January 19, 2025, 1102 UTC
by Ray Lalleu
1 Replies
446 Views
Last post May 16, 2020, 1709 UTC
by kris
0 Replies
464 Views
Last post June 18, 2019, 2039 UTC
by Ray Lalleu
0 Replies
222 Views
Last post June 23, 2024, 0830 UTC
by Ray Lalleu
1 Replies
448 Views
Last post June 14, 2022, 1853 UTC
by FOX
2 Replies
506 Views
Last post October 02, 2020, 1952 UTC
by dandan22
1 Replies
457 Views
Last post October 25, 2019, 1401 UTC
by Ray Lalleu
0 Replies
102 Views
Last post September 12, 2025, 2130 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 T-Shirt
by MitchellTimeDesigns