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
322 Views
Last post May 13, 2023, 1732 UTC
by Ray Lalleu
0 Replies
234 Views
Last post January 20, 2023, 1551 UTC
by Ray Lalleu
1 Replies
275 Views
Last post December 13, 2024, 2030 UTC
by Fisherman
0 Replies
398 Views
Last post January 11, 2020, 1349 UTC
by Ray Lalleu
0 Replies
293 Views
Last post October 24, 2020, 1246 UTC
by Ray Lalleu
1 Replies
418 Views
Last post September 25, 2021, 1429 UTC
by Bali_Frank
0 Replies
195 Views
Last post September 15, 2023, 2003 UTC
by Ray Lalleu
1 Replies
587 Views
Last post June 21, 2025, 0510 UTC
by Shortwave_Listener
0 Replies
359 Views
Last post July 16, 2019, 2012 UTC
by Ray Lalleu
0 Replies
345 Views
Last post July 18, 2020, 0950 UTC
by Ray Lalleu
2 Replies
418 Views
Last post March 18, 2024, 1735 UTC
by kris
0 Replies
402 Views
Last post March 18, 2019, 1645 UTC
by Ray Lalleu
0 Replies
310 Views
Last post January 19, 2021, 1443 UTC
by Ray Lalleu
1 Replies
315 Views
Last post November 17, 2022, 1546 UTC
by kobalts
1 Replies
268 Views
Last post November 02, 2024, 1733 UTC
by Ray Lalleu
5 Replies
765 Views
Last post November 17, 2019, 1110 UTC
by KaySeeks
2 Replies
680 Views
Last post July 28, 2023, 0005 UTC
by N2MLP
0 Replies
302 Views
Last post June 04, 2020, 1949 UTC
by Ray Lalleu
2 Replies
571 Views
Last post April 25, 2021, 1808 UTC
by Bali_Frank
0 Replies
396 Views
Last post February 27, 2022, 0830 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