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
3 Replies
480 Views
Last post September 18, 2022, 2117 UTC
by ralf_bender
2 Replies
480 Views
Last post August 03, 2022, 1945 UTC
by Misti-Radio
1 Replies
480 Views
Last post June 27, 2022, 2024 UTC
by ukdxer
1 Replies
480 Views
Last post June 06, 2022, 2134 UTC
by Ray Lalleu
1 Replies
480 Views
Last post June 05, 2022, 0731 UTC
by Ray Lalleu
1 Replies
480 Views
Last post May 22, 2022, 1923 UTC
by Shortwave_Listener
1 Replies
480 Views
Last post May 14, 2022, 1326 UTC
by Ray Lalleu
2 Replies
480 Views
Last post May 01, 2022, 2131 UTC
by kris
0 Replies
480 Views
Last post April 05, 2022, 2135 UTC
by Ray Lalleu
1 Replies
480 Views
Last post March 26, 2022, 1027 UTC
by FOX
1 Replies
480 Views
Last post March 25, 2022, 2248 UTC
by KaySeeks
1 Replies
480 Views
Last post February 13, 2022, 2344 UTC
by Ray Lalleu
1 Replies
480 Views
Last post January 15, 2022, 1751 UTC
by Bali_Frank
0 Replies
480 Views
Last post January 07, 2022, 0359 UTC
by FOX
1 Replies
480 Views
Last post December 25, 2021, 2014 UTC
by Grey Fox
1 Replies
480 Views
Last post December 24, 2021, 1528 UTC
by Ray Lalleu
2 Replies
480 Views
Last post May 10, 2025, 1933 UTC
by DBullock
2 Replies
480 Views
Last post December 25, 2024, 1242 UTC
by J. Carlos Pérez Montero
1 Replies
480 Views
Last post November 18, 2024, 1533 UTC
by TRI International
2 Replies
480 Views
Last post October 25, 2024, 1302 UTC
by Ray Lalleu

 

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