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
14 Replies
1548 Views
Last post September 04, 2021, 0058 UTC
by bigd
23 Replies
2683 Views
Last post March 05, 2023, 0355 UTC
by blw
8 Replies
827 Views
Last post August 21, 2023, 2307 UTC
by dxwingr
4 Replies
806 Views
Last post June 15, 2020, 2357 UTC
by Bali_Frank
5 Replies
808 Views
Last post November 20, 2022, 2204 UTC
by aurora
2 Replies
494 Views
Last post February 26, 2024, 1958 UTC
by dxwingr
2 Replies
532 Views
Last post January 16, 2023, 2029 UTC
by Bali_Frank
1 Replies
882 Views
Last post November 19, 2016, 1957 UTC
by PirateSWL
15 Replies
1463 Views
Last post February 13, 2023, 0114 UTC
by Pigmeat
0 Replies
406 Views
Last post January 26, 2024, 1457 UTC
by Ct Yankee
18 Replies
3489 Views
Last post June 11, 2025, 2342 UTC
by Radiouser
5 Replies
870 Views
Last post June 26, 2020, 0048 UTC
by blw
24 Replies
4004 Views
Last post November 05, 2023, 0406 UTC
by Sealord
1 Replies
500 Views
Last post January 24, 2023, 2146 UTC
by Skipmuck
11 Replies
1325 Views
Last post March 18, 2023, 2045 UTC
by N2MLP
1 Replies
553 Views
Last post March 14, 2024, 1257 UTC
by ChrisSmolinski
15 Replies
771 Views
Last post July 20, 2025, 2354 UTC
by N2MLP
0 Replies
311 Views
Last post February 24, 2023, 1959 UTC
by Ct Yankee
8 Replies
900 Views
Last post December 31, 2022, 2122 UTC
by ~SIGINT~
13 Replies
1937 Views
Last post March 07, 2021, 2339 UTC
by Sarge94

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns