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
217 Views
Last post April 16, 2023, 1037 UTC
by europirate
2 Replies
521 Views
Last post September 22, 2023, 1555 UTC
by dxace1
1 Replies
318 Views
Last post December 28, 2023, 1535 UTC
by Ray Lalleu
1 Replies
263 Views
Last post March 30, 2025, 1050 UTC
by Ray Lalleu
0 Replies
227 Views
Last post May 20, 2023, 0855 UTC
by europirate
1 Replies
370 Views
Last post April 21, 2024, 1202 UTC
by Fisherman
2 Replies
507 Views
Last post January 15, 2022, 1338 UTC
by Bali_Frank
3 Replies
515 Views
Last post April 17, 2022, 2214 UTC
by Ray Lalleu
1 Replies
272 Views
Last post October 05, 2023, 1639 UTC
by Ray Lalleu
1 Replies
457 Views
Last post May 29, 2022, 1240 UTC
by Ray Lalleu
1 Replies
187 Views
Last post February 16, 2025, 1008 UTC
by Ray Lalleu
1 Replies
214 Views
Last post July 30, 2023, 1100 UTC
by Ray Lalleu
0 Replies
230 Views
Last post December 26, 2023, 1539 UTC
by europirate
2 Replies
718 Views
Last post December 31, 2021, 1310 UTC
by Bali_Frank
0 Replies
163 Views
Last post February 02, 2025, 1245 UTC
by europirate
0 Replies
221 Views
Last post March 14, 2023, 2115 UTC
by europirate
3 Replies
687 Views
Last post July 06, 2024, 1953 UTC
by Fisherman
1 Replies
402 Views
Last post June 25, 2022, 1841 UTC
by Ray Lalleu
1 Replies
304 Views
Last post April 20, 2024, 1712 UTC
by Ray Lalleu
3 Replies
671 Views
Last post May 01, 2022, 1219 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