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
197 Views
Last post September 28, 2024, 0757 UTC
by Ray Lalleu
2 Replies
356 Views
Last post November 11, 2023, 1624 UTC
by Ray Lalleu
0 Replies
274 Views
Last post December 12, 2020, 0938 UTC
by Ray Lalleu
0 Replies
472 Views
Last post January 05, 2019, 1555 UTC
by Ray Lalleu
0 Replies
206 Views
Last post February 14, 2025, 1918 UTC
by Ray Lalleu
1 Replies
291 Views
Last post March 26, 2023, 1513 UTC
by kris
0 Replies
402 Views
Last post February 27, 2022, 0830 UTC
by Ray Lalleu
2 Replies
582 Views
Last post April 25, 2021, 1808 UTC
by Bali_Frank
0 Replies
313 Views
Last post June 04, 2020, 1949 UTC
by Ray Lalleu
2 Replies
691 Views
Last post July 28, 2023, 0005 UTC
by N2MLP
5 Replies
789 Views
Last post November 17, 2019, 1110 UTC
by KaySeeks
1 Replies
278 Views
Last post November 02, 2024, 1733 UTC
by Ray Lalleu
1 Replies
324 Views
Last post November 17, 2022, 1546 UTC
by kobalts
0 Replies
320 Views
Last post January 19, 2021, 1443 UTC
by Ray Lalleu
0 Replies
410 Views
Last post March 18, 2019, 1645 UTC
by Ray Lalleu
2 Replies
441 Views
Last post March 18, 2024, 1735 UTC
by kris
0 Replies
360 Views
Last post July 18, 2020, 0950 UTC
by Ray Lalleu
0 Replies
370 Views
Last post July 16, 2019, 2012 UTC
by Ray Lalleu
1 Replies
606 Views
Last post June 21, 2025, 0510 UTC
by Shortwave_Listener
0 Replies
220 Views
Last post September 15, 2023, 2003 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