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
1164 Views
Last post April 22, 2016, 1841 UTC
by FOX
1 Replies
293 Views
Last post December 17, 2022, 1101 UTC
by Ray Lalleu
3 Replies
601 Views
Last post May 02, 2020, 2343 UTC
by ChrisSmolinski
2 Replies
580 Views
Last post April 18, 2022, 1003 UTC
by Bali_Frank
0 Replies
232 Views
Last post March 29, 2025, 1856 UTC
by FOX
1 Replies
537 Views
Last post April 11, 2020, 1612 UTC
by Ray Lalleu
5 Replies
977 Views
Last post February 25, 2024, 1222 UTC
by Bricklayer
1 Replies
213 Views
Last post March 01, 2025, 0859 UTC
by Ray Lalleu
1 Replies
379 Views
Last post December 29, 2024, 0920 UTC
by RainBrandy
1 Replies
206 Views
Last post September 17, 2023, 0739 UTC
by Ray Lalleu
1 Replies
428 Views
Last post April 19, 2020, 1847 UTC
by Ray Lalleu
1 Replies
532 Views
Last post May 23, 2020, 1610 UTC
by Ray Lalleu
0 Replies
396 Views
Last post September 04, 2020, 1943 UTC
by FOX
0 Replies
222 Views
Last post October 23, 2024, 1055 UTC
by FOX
1 Replies
571 Views
Last post June 24, 2022, 1849 UTC
by Ray Lalleu
3 Replies
627 Views
Last post October 15, 2023, 2108 UTC
by N2MLP
1 Replies
518 Views
Last post March 29, 2020, 1738 UTC
by Ray Lalleu
1 Replies
323 Views
Last post August 09, 2024, 1839 UTC
by Ray Lalleu
2 Replies
338 Views
Last post May 30, 2023, 1556 UTC
by Misti-Radio
0 Replies
463 Views
Last post August 12, 2021, 1305 UTC
by FOX

 

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