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
248 Views
Last post October 26, 2022, 1627 UTC
by Ray Lalleu
0 Replies
248 Views
Last post November 16, 2024, 2102 UTC
by Ray Lalleu
1 Replies
248 Views
Last post August 05, 2023, 1045 UTC
by Ray Lalleu
0 Replies
248 Views
Last post March 22, 2023, 0829 UTC
by dave1965
2 Replies
248 Views
Last post June 26, 2025, 1850 UTC
by dxace1
1 Replies
248 Views
Last post September 03, 2023, 0744 UTC
by Ray Lalleu
0 Replies
248 Views
Last post October 28, 2024, 2036 UTC
by Ray Lalleu
0 Replies
248 Views
Last post March 24, 2024, 1806 UTC
by Ray Lalleu
1 Replies
248 Views
Last post December 09, 2023, 0952 UTC
by Ray Lalleu
0 Replies
248 Views
Last post March 29, 2023, 2152 UTC
by Ray Lalleu
0 Replies
248 Views
Last post February 24, 2025, 1805 UTC
by kris
0 Replies
248 Views
Last post December 10, 2023, 0848 UTC
by Robertas
1 Replies
248 Views
Last post September 06, 2024, 1653 UTC
by Ray Lalleu
0 Replies
248 Views
Last post April 24, 2024, 1904 UTC
by Ray Lalleu
0 Replies
248 Views
Last post October 30, 2022, 1628 UTC
by Ray Lalleu
0 Replies
248 Views
Last post May 21, 2025, 1246 UTC
by dave1965
0 Replies
248 Views
Last post December 10, 2022, 1959 UTC
by Ray Lalleu
0 Replies
248 Views
Last post November 29, 2023, 1800 UTC
by Ray Lalleu
0 Replies
248 Views
Last post March 20, 2023, 1941 UTC
by Ray Lalleu
0 Replies
248 Views
Last post April 21, 2023, 1935 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