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
383 Views
Last post January 23, 2025, 1604 UTC
by Ron Hunsicker
1 Replies
384 Views
Last post June 25, 2023, 0006 UTC
by Skipmuck
3 Replies
384 Views
Last post June 20, 2023, 0134 UTC
by Chuck54
0 Replies
384 Views
Last post February 28, 2023, 0057 UTC
by DangerKitty
0 Replies
384 Views
Last post June 18, 2024, 1026 UTC
by TRI International
0 Replies
384 Views
Last post January 31, 2023, 0223 UTC
by Skipmuck
1 Replies
384 Views
Last post October 17, 2024, 2115 UTC
by TRI International
2 Replies
384 Views
Last post August 19, 2025, 0210 UTC
by Treehouse SWL
1 Replies
384 Views
Last post August 26, 2023, 2256 UTC
by N2MLP
0 Replies
384 Views
Last post October 28, 2022, 2040 UTC
by Skipmuck
0 Replies
385 Views
Last post March 15, 2024, 1156 UTC
by ChrisSmolinski
0 Replies
385 Views
Last post January 28, 2023, 1752 UTC
by hsmith77
0 Replies
385 Views
Last post October 26, 2022, 1531 UTC
by Ct Yankee
0 Replies
385 Views
Last post September 29, 2024, 2356 UTC
by Skipmuck
0 Replies
385 Views
Last post September 05, 2024, 1058 UTC
by ChrisSmolinski
0 Replies
385 Views
Last post May 20, 2023, 1841 UTC
by ChrisSmolinski
0 Replies
385 Views
Last post November 24, 2022, 1957 UTC
by Nomadiq
11 Replies
385 Views
Last post September 22, 2025, 0325 UTC
by dxace1
1 Replies
385 Views
Last post February 17, 2024, 0041 UTC
by BigAl
0 Replies
385 Views
Last post November 12, 2023, 1359 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 T-Shirt
by MitchellTimeDesigns