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
5 Replies
889 Views
Last post October 07, 2021, 1927 UTC
by ulx2
5 Replies
1004 Views
Last post March 31, 2025, 0716 UTC
by Benoit LEVEQUE
5 Replies
1020 Views
Last post January 19, 2025, 1901 UTC
by DBullock
5 Replies
676 Views
Last post February 25, 2025, 1605 UTC
by Benoit LEVEQUE
5 Replies
803 Views
Last post April 22, 2024, 1856 UTC
by nektaman
5 Replies
797 Views
Last post February 22, 2025, 2324 UTC
by elburndx
5 Replies
698 Views
Last post February 09, 2025, 1655 UTC
by Ray Lalleu
5 Replies
1293 Views
Last post June 02, 2018, 2244 UTC
by Ray Lalleu
5 Replies
568 Views
Last post February 08, 2025, 1820 UTC
by Mad Radio DXer UK
5 Replies
863 Views
Last post December 31, 2022, 1417 UTC
by Mike Radio
5 Replies
1322 Views
Last post May 31, 2018, 2353 UTC
by Skipmuck
5 Replies
1294 Views
Last post May 31, 2018, 0932 UTC
by Ray Lalleu
5 Replies
791 Views
Last post September 27, 2024, 1600 UTC
by Ethernut
5 Replies
1174 Views
Last post September 15, 2021, 1016 UTC
by henri
5 Replies
853 Views
Last post January 27, 2025, 0905 UTC
by Rick
5 Replies
3605 Views
Last post February 22, 2015, 0112 UTC
by Hornet0123
5 Replies
786 Views
Last post September 03, 2021, 2008 UTC
by Grey Fox
5 Replies
2041 Views
Last post March 15, 2017, 0000 UTC
by JoeFLIPS
5 Replies
2188 Views
Last post March 12, 2017, 1840 UTC
by Jari Finland
5 Replies
1257 Views
Last post December 07, 2024, 2338 UTC
by ChrisSmolinski

 

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