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
2 Replies
628 Views
Last post May 12, 2024, 1458 UTC
by Benoit LEVEQUE
0 Replies
192 Views
Last post October 29, 2023, 0816 UTC
by Ray Lalleu
1 Replies
179 Views
Last post November 10, 2024, 1620 UTC
by RadioLongWire
2 Replies
1372 Views
Last post December 30, 2023, 1057 UTC
by europirate
1 Replies
200 Views
Last post October 19, 2024, 1334 UTC
by Ray Lalleu
2 Replies
315 Views
Last post October 20, 2024, 1628 UTC
by Ray Lalleu
1 Replies
331 Views
Last post May 28, 2023, 2205 UTC
by kris
1 Replies
226 Views
Last post October 12, 2024, 1648 UTC
by kris
1 Replies
225 Views
Last post September 07, 2024, 1605 UTC
by Fisherman
2 Replies
255 Views
Last post August 20, 2023, 0943 UTC
by ukdxer
0 Replies
169 Views
Last post June 10, 2023, 2104 UTC
by Ray Lalleu
0 Replies
212 Views
Last post June 09, 2023, 2019 UTC
by Ray Lalleu
0 Replies
190 Views
Last post April 20, 2024, 2001 UTC
by Ray Lalleu
1 Replies
303 Views
Last post April 19, 2024, 2019 UTC
by Ray Lalleu
0 Replies
161 Views
Last post July 06, 2024, 1659 UTC
by Ray Lalleu
0 Replies
165 Views
Last post March 23, 2025, 1655 UTC
by Ray Lalleu
0 Replies
180 Views
Last post July 27, 2024, 1649 UTC
by Ray Lalleu
0 Replies
206 Views
Last post May 18, 2024, 1650 UTC
by Ray Lalleu
0 Replies
109 Views
Last post March 30, 2025, 1647 UTC
by Ray Lalleu
0 Replies
166 Views
Last post June 09, 2024, 1648 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