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
780 Views
Last post November 30, 2022, 2303 UTC
by kris
0 Replies
781 Views
Last post September 24, 2022, 2252 UTC
by Shortwave_Listener
0 Replies
781 Views
Last post August 16, 2023, 0848 UTC
by TRI International
0 Replies
784 Views
Last post April 19, 2022, 1842 UTC
by Mad Radio DXer UK
18049.0 Dasher

Started by rec/cat7610

0 Replies
785 Views
Last post February 01, 2022, 1842 UTC
by rec/cat7610
0 Replies
786 Views
Last post September 09, 2022, 2152 UTC
by kris
1 Replies
791 Views
Last post May 15, 2025, 1750 UTC
by Ray Lalleu
0 Replies
792 Views
Last post January 14, 2023, 2012 UTC
by Ronald_Mullis
11005 AM

Started by Marcy1

0 Replies
795 Views
Last post April 14, 2022, 2257 UTC
by Marcy1
11005 AM

Started by Marcy1

0 Replies
796 Views
Last post April 04, 2022, 2255 UTC
by Marcy1
0 Replies
797 Views
Last post April 11, 2022, 1342 UTC
by kris
0 Replies
798 Views
Last post September 29, 2022, 2108 UTC
by ~SIGINT~
0 Replies
799 Views
Last post December 21, 2022, 0115 UTC
by kris
0 Replies
799 Views
Last post March 28, 2022, 2030 UTC
by KaySeeks
0 Replies
800 Views
Last post January 30, 2023, 1854 UTC
by SWL-JO21
0 Replies
803 Views
Last post December 20, 2022, 0023 UTC
by kris
0 Replies
806 Views
Last post July 28, 2022, 2111 UTC
by ~SIGINT~
0 Replies
808 Views
Last post July 28, 2022, 0141 UTC
by ~SIGINT~
7522 LSB

Started by Howdy

1 Replies
808 Views
Last post November 15, 2024, 2258 UTC
by RobRich
1 Replies
809 Views
Last post March 10, 2022, 2320 UTC
by kris

 

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