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
1 Replies
14359 Views
Last post July 19, 2022, 2354 UTC
by Ray Lalleu
46 Replies
28611 Views
Last post July 28, 2024, 1558 UTC
by fox558
2 Replies
4225 Views
Last post December 30, 2024, 0839 UTC
by 26354
0 Replies
5975 Views
Last post February 07, 2023, 0315 UTC
by Shortwave_Listener
2 Replies
1117 Views
Last post November 11, 2021, 2351 UTC
by kris
5 Replies
988 Views
Last post October 16, 2024, 0037 UTC
by n2avh
2 Replies
1104 Views
Last post June 17, 2022, 2035 UTC
by Panda_NL
3 Replies
1143 Views
Last post June 17, 2022, 2123 UTC
by Ray Lalleu
3 Replies
719 Views
Last post July 18, 2024, 0907 UTC
by Aerhoo
2 Replies
459 Views
Last post October 06, 2024, 1822 UTC
by Jayden
1 Replies
469 Views
Last post November 09, 2024, 2322 UTC
by kris
0 Replies
338 Views
Last post November 15, 2024, 1743 UTC
by Alaska_CZ
0 Replies
931 Views
Last post November 29, 2024, 1658 UTC
by Alaska_CZ
9 Replies
1188 Views
Last post December 26, 2024, 0053 UTC
by Andrew Yoder
2 Replies
422 Views
Last post January 10, 2025, 1752 UTC
by Alex BLR
0 Replies
327 Views
Last post February 03, 2025, 1628 UTC
by Alaska_CZ
1 Replies
334 Views
Last post February 08, 2025, 1514 UTC
by Pascal
2 Replies
376 Views
Last post February 19, 2025, 1843 UTC
by Ray Lalleu
3 Replies
417 Views
Last post March 01, 2025, 1629 UTC
by Mad Radio DXer UK
2 Replies
430 Views
Last post April 01, 2025, 0726 UTC
by Benoit LEVEQUE

 

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