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
1 Replies
224 Views
Last post April 09, 2023, 0939 UTC
by Ray Lalleu
2 Replies
476 Views
Last post September 30, 2023, 2143 UTC
by kris
3 Replies
556 Views
Last post March 23, 2025, 1327 UTC
by Ethernut
4 Replies
382 Views
Last post June 30, 2024, 1552 UTC
by Fisherman
0 Replies
426 Views
Last post December 15, 2021, 1512 UTC
by europirate
2 Replies
334 Views
Last post January 05, 2025, 1206 UTC
by europirate
1 Replies
340 Views
Last post August 04, 2024, 2026 UTC
by Fisherman
4 Replies
450 Views
Last post March 29, 2024, 2142 UTC
by dxace1
1 Replies
226 Views
Last post September 22, 2024, 1655 UTC
by Ray Lalleu
0 Replies
192 Views
Last post September 10, 2023, 0837 UTC
by europirate
2 Replies
456 Views
Last post July 03, 2022, 1121 UTC
by Bali_Frank
0 Replies
235 Views
Last post March 22, 2025, 1102 UTC
by europirate
2 Replies
319 Views
Last post December 08, 2024, 1522 UTC
by kris
0 Replies
190 Views
Last post April 30, 2025, 2118 UTC
by europirate
2 Replies
614 Views
Last post December 13, 2021, 1408 UTC
by kris
0 Replies
576 Views
Last post April 24, 2022, 1008 UTC
by europirate
0 Replies
172 Views
Last post April 19, 2025, 0752 UTC
by europirate
3 Replies
368 Views
Last post October 06, 2024, 1343 UTC
by Fisherman
2 Replies
452 Views
Last post August 02, 2024, 2147 UTC
by Ray Lalleu
5 Replies
728 Views
Last post May 21, 2022, 2225 UTC
by dxace1

 

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