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
703 Views
Last post August 06, 2022, 0951 UTC
by TRI International
0 Replies
701 Views
Last post July 04, 2023, 1813 UTC
by N2MLP
0 Replies
700 Views
Last post November 26, 2022, 1125 UTC
by prldx
0 Replies
699 Views
Last post August 19, 2023, 2317 UTC
by RobRich
0 Replies
697 Views
Last post November 12, 2023, 1423 UTC
by prldx
1 Replies
697 Views
Last post March 15, 2024, 0145 UTC
by R4002
0 Replies
697 Views
Last post January 08, 2022, 2202 UTC
by RobRich
0 Replies
697 Views
Last post August 20, 2024, 1355 UTC
by R4002
0 Replies
696 Views
Last post January 14, 2022, 2203 UTC
by UtilitySeattle
0 Replies
695 Views
Last post November 20, 2024, 1300 UTC
by R4002
0 Replies
695 Views
Last post December 30, 2022, 1311 UTC
by R4002
0 Replies
695 Views
Last post February 21, 2025, 2008 UTC
by R4002
0 Replies
693 Views
Last post December 11, 2022, 1641 UTC
by Zerobeat2022
0 Replies
693 Views
Last post December 26, 2023, 1500 UTC
by R4002
0 Replies
693 Views
Last post November 06, 2023, 1405 UTC
by ChrisSmolinski
0 Replies
692 Views
Last post April 29, 2024, 2006 UTC
by R4002
0 Replies
692 Views
Last post December 28, 2021, 1338 UTC
by ChrisSmolinski
0 Replies
692 Views
Last post August 31, 2023, 0933 UTC
by TRI International
0 Replies
688 Views
Last post August 17, 2022, 0238 UTC
by vlf2hf
0 Replies
688 Views
Last post May 25, 2023, 1136 UTC
by R4002

 

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