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
2 Replies
771 Views
Last post January 16, 2025, 2300 UTC
by n2avh
0 Replies
773 Views
Last post August 02, 2018, 1802 UTC
by ChrisSmolinski
1 Replies
773 Views
Last post February 26, 2022, 1020 UTC
by NQC
1 Replies
774 Views
Last post July 27, 2022, 1957 UTC
by Cross the Rubicon
2 Replies
775 Views
Last post June 12, 2024, 1658 UTC
by prldx
0 Replies
775 Views
Last post September 29, 2023, 0955 UTC
by TRI International
0 Replies
776 Views
Last post April 09, 2021, 1431 UTC
by kris
1 Replies
776 Views
Last post August 07, 2024, 2015 UTC
by kris
0 Replies
777 Views
Last post January 13, 2020, 2342 UTC
by kris
0 Replies
779 Views
Last post August 30, 2021, 2011 UTC
by myteaquinn
0 Replies
780 Views
Last post August 03, 2018, 1554 UTC
by ChrisSmolinski
0 Replies
780 Views
Last post August 15, 2020, 0439 UTC
by Cornelius
4 Replies
781 Views
Last post March 20, 2024, 2323 UTC
by N5STD
1 Replies
781 Views
Last post February 17, 2022, 1935 UTC
by flexoman61
1 Replies
782 Views
Last post February 21, 2022, 1050 UTC
by NQC
2 Replies
782 Views
Last post April 28, 2023, 2143 UTC
by kris
0 Replies
782 Views
Last post November 11, 2019, 1749 UTC
by UtilitySeattle
0 Replies
783 Views
Last post February 24, 2023, 1933 UTC
by kris
3 Replies
783 Views
Last post June 18, 2022, 0006 UTC
by ~SIGINT~
2 Replies
783 Views
Last post April 17, 2022, 1646 UTC
by Shortwave_Listener

 

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