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
532 Views
Last post September 09, 2018, 0921 UTC
by Ray Lalleu
6 Replies
1147 Views
Last post November 24, 2023, 2329 UTC
by Shortwave_Listener
1 Replies
628 Views
Last post December 03, 2021, 1258 UTC
by Bali_Frank
0 Replies
428 Views
Last post March 28, 2020, 1659 UTC
by Ray Lalleu
2 Replies
332 Views
Last post February 23, 2025, 1749 UTC
by RadioHF - Sheldon Harvey
0 Replies
396 Views
Last post May 08, 2021, 1326 UTC
by Ray Lalleu
0 Replies
243 Views
Last post August 05, 2024, 2044 UTC
by Ray Lalleu
0 Replies
339 Views
Last post November 02, 2020, 1559 UTC
by Ray Lalleu
0 Replies
462 Views
Last post October 31, 2018, 2109 UTC
by Ray Lalleu
0 Replies
192 Views
Last post November 11, 2024, 1144 UTC
by Ray Lalleu
0 Replies
315 Views
Last post January 02, 2024, 1603 UTC
by Ray Lalleu
0 Replies
224 Views
Last post December 06, 2022, 1748 UTC
by Ray Lalleu
1 Replies
473 Views
Last post January 31, 2021, 1047 UTC
by Bali_Frank
0 Replies
340 Views
Last post April 28, 2020, 1313 UTC
by Ray Lalleu
1 Replies
553 Views
Last post April 04, 2019, 2257 UTC
by Radio Star
1 Replies
243 Views
Last post May 28, 2023, 1448 UTC
by FOX
1 Replies
487 Views
Last post April 13, 2022, 1918 UTC
by dxace1
1 Replies
456 Views
Last post July 31, 2020, 1957 UTC
by kris
0 Replies
159 Views
Last post July 06, 2025, 1924 UTC
by Ray Lalleu
0 Replies
174 Views
Last post September 30, 2023, 1433 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