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
398 Views
Last post June 04, 2023, 2018 UTC
by TRI International
1 Replies
398 Views
Last post February 28, 2023, 1933 UTC
by Ray Lalleu
1 Replies
398 Views
Last post July 14, 2022, 1852 UTC
by Ray Lalleu
1 Replies
398 Views
Last post June 05, 2022, 1024 UTC
by europirate
0 Replies
398 Views
Last post April 18, 2022, 0946 UTC
by europirate
0 Replies
398 Views
Last post March 19, 2022, 1651 UTC
by Ray Lalleu
0 Replies
398 Views
Last post March 04, 2022, 1656 UTC
by Ray Lalleu
0 Replies
398 Views
Last post February 14, 2022, 1931 UTC
by Ray Lalleu
0 Replies
398 Views
Last post January 28, 2022, 1655 UTC
by Ray Lalleu
0 Replies
398 Views
Last post January 02, 2022, 1103 UTC
by FOX
0 Replies
398 Views
Last post December 25, 2021, 1053 UTC
by Ray Lalleu
0 Replies
398 Views
Last post May 17, 2025, 1818 UTC
by Shortwave_Listener
3 Replies
398 Views
Last post April 04, 2025, 0755 UTC
by Benoit LEVEQUE
2 Replies
398 Views
Last post March 17, 2025, 0900 UTC
by Benoit LEVEQUE
3 Replies
398 Views
Last post March 15, 2025, 1925 UTC
by Mad Radio DXer UK
2 Replies
398 Views
Last post February 25, 2025, 1952 UTC
by DBullock
3 Replies
398 Views
Last post February 20, 2025, 1932 UTC
by Pascal
4 Replies
398 Views
Last post January 19, 2025, 1846 UTC
by DBullock
2 Replies
398 Views
Last post November 15, 2024, 2359 UTC
by N2MLP
2 Replies
398 Views
Last post September 01, 2024, 1516 UTC
by RainBrandy

 

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