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
323 Views
Last post January 22, 2024, 1308 UTC
by ChrisSmolinski
0 Replies
323 Views
Last post March 27, 2023, 0115 UTC
by Skipmuck
2 Replies
322 Views
Last post November 17, 2024, 1345 UTC
by ChrisSmolinski
0 Replies
322 Views
Last post December 22, 2022, 2259 UTC
by DangerKitty
1 Replies
322 Views
Last post July 08, 2025, 1831 UTC
by Radiouser
0 Replies
322 Views
Last post June 10, 2023, 2355 UTC
by Skipmuck
0 Replies
322 Views
Last post May 25, 2025, 0308 UTC
by DangerKitty
1 Replies
322 Views
Last post December 09, 2023, 0024 UTC
by myteaquinn
0 Replies
322 Views
Last post May 08, 2023, 1528 UTC
by ChrisSmolinski
1 Replies
322 Views
Last post November 28, 2024, 1307 UTC
by ChrisSmolinski
0 Replies
322 Views
Last post December 09, 2024, 2353 UTC
by dxace1
0 Replies
321 Views
Last post October 31, 2024, 1744 UTC
by ChrisSmolinski
1 Replies
321 Views
Last post June 21, 2025, 0207 UTC
by Dr. Strangelove
0 Replies
321 Views
Last post February 09, 2025, 1740 UTC
by ChrisSmolinski
0 Replies
321 Views
Last post April 16, 2023, 1340 UTC
by ChrisSmolinski
0 Replies
321 Views
Last post February 11, 2024, 0333 UTC
by Skipmuck
0 Replies
321 Views
Last post September 12, 2024, 1121 UTC
by ChrisSmolinski
1 Replies
321 Views
Last post July 08, 2023, 0321 UTC
by ChrisLobdell
1 Replies
321 Views
Last post October 05, 2024, 0036 UTC
by Molvania Poacher
0 Replies
321 Views
Last post November 21, 2022, 2021 UTC
by Skipmuck

 

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