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
4 Replies
381 Views
Last post July 04, 2025, 1521 UTC
by myteaquinn
2 Replies
222 Views
Last post July 04, 2025, 1445 UTC
by ChrisSmolinski
7 Replies
616 Views
Last post July 04, 2025, 1037 UTC
by ChrisSmolinski
7 Replies
639 Views
Last post July 04, 2025, 0448 UTC
by ChrisLobdell
18 Replies
1590 Views
Last post July 04, 2025, 0405 UTC
by sternradio666
3 Replies
407 Views
Last post July 04, 2025, 0203 UTC
by TheHappyWanker
9 Replies
548 Views
Last post July 04, 2025, 0139 UTC
by space junk radio
1 Replies
221 Views
Last post July 03, 2025, 1449 UTC
by AlexRadioDX
6 Replies
539 Views
Last post July 03, 2025, 1116 UTC
by ChrisSmolinski
5 Replies
475 Views
Last post July 03, 2025, 0435 UTC
by osiris
4 Replies
414 Views
Last post July 03, 2025, 0307 UTC
by TheHappyWanker
9 Replies
751 Views
Last post July 03, 2025, 0306 UTC
by TheHappyWanker
5 Replies
518 Views
Last post July 03, 2025, 0105 UTC
by Quasar
1 Replies
236 Views
Last post July 02, 2025, 2200 UTC
by dxwingr
6 Replies
560 Views
Last post July 02, 2025, 0247 UTC
by Markokpik
6 Replies
543 Views
Last post July 02, 2025, 0239 UTC
by Markokpik
7 Replies
498 Views
Last post July 02, 2025, 0226 UTC
by Markokpik
4 Replies
413 Views
Last post July 02, 2025, 0159 UTC
by Molvania Poacher
8 Replies
566 Views
Last post July 02, 2025, 0128 UTC
by ChrisLobdell
0 Replies
224 Views
Last post July 01, 2025, 1203 UTC
by ChrisSmolinski

 

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