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
10 Replies
698 Views
Last post May 29, 2023, 0052 UTC
by myteaquinn
0 Replies
234 Views
Last post April 20, 2023, 2038 UTC
by N2MLP
11 Replies
814 Views
Last post June 20, 2023, 1256 UTC
by Ron Hunsicker
1 Replies
356 Views
Last post June 23, 2024, 0459 UTC
by Shortwave_Listener
1 Replies
281 Views
Last post June 25, 2023, 0504 UTC
by Shortwave_Listener
20 Replies
1266 Views
Last post July 30, 2023, 0156 UTC
by blw
5 Replies
527 Views
Last post July 23, 2023, 0409 UTC
by Andrew Yoder
15 Replies
1423 Views
Last post September 21, 2024, 0235 UTC
by VE3VCF
22 Replies
2571 Views
Last post October 01, 2023, 0120 UTC
by radio_cosmo
6 Replies
558 Views
Last post August 05, 2024, 1415 UTC
by ChrisSmolinski
6 Replies
676 Views
Last post January 15, 2024, 0117 UTC
by Mick Boyle
16 Replies
948 Views
Last post August 17, 2023, 2010 UTC
by Ron Hunsicker
0 Replies
176 Views
Last post June 30, 2023, 2325 UTC
by N2MLP
6 Replies
793 Views
Last post June 02, 2024, 0354 UTC
by MrMomB
13 Replies
756 Views
Last post February 03, 2024, 2359 UTC
by blw
14 Replies
960 Views
Last post February 03, 2024, 2358 UTC
by Markokpik
8 Replies
673 Views
Last post April 13, 2023, 0042 UTC
by Skipmuck
2 Replies
401 Views
Last post September 26, 2024, 1628 UTC
by Ron Hunsicker
9 Replies
1013 Views
Last post January 20, 2024, 2102 UTC
by KDOG
4 Replies
263 Views
Last post May 05, 2024, 1647 UTC
by J. Carlos Pérez Montero

 

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