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
334 Views
Last post November 26, 2022, 1922 UTC
by Ray Lalleu
1 Replies
464 Views
Last post March 06, 2021, 1418 UTC
by Ray Lalleu
1 Replies
358 Views
Last post September 12, 2022, 2034 UTC
by Ray Lalleu
1 Replies
390 Views
Last post December 05, 2020, 1633 UTC
by Ray Lalleu
0 Replies
475 Views
Last post January 10, 2021, 1536 UTC
by kris
2 Replies
344 Views
Last post March 18, 2023, 1846 UTC
by Misti-Radio
2 Replies
513 Views
Last post February 06, 2021, 1427 UTC
by The Ether Hacker
1 Replies
470 Views
Last post May 14, 2021, 2120 UTC
by Ray Lalleu
2 Replies
543 Views
Last post August 17, 2019, 1836 UTC
by Ray Lalleu
2 Replies
1387 Views
Last post June 23, 2018, 2110 UTC
by ralf_bender
1 Replies
465 Views
Last post December 17, 2020, 1953 UTC
by Ray Lalleu
1 Replies
309 Views
Last post February 04, 2024, 0858 UTC
by Ray Lalleu
4 Replies
407 Views
Last post May 06, 2025, 0837 UTC
by Benoit LEVEQUE
2 Replies
624 Views
Last post July 31, 2021, 2145 UTC
by muromdx
0 Replies
504 Views
Last post November 10, 2021, 2346 UTC
by kris
1 Replies
516 Views
Last post December 21, 2021, 0151 UTC
by Ray Lalleu
1 Replies
427 Views
Last post May 25, 2021, 1942 UTC
by Ray Lalleu
0 Replies
342 Views
Last post July 07, 2020, 2220 UTC
by kris
2 Replies
280 Views
Last post October 20, 2023, 1716 UTC
by kris
0 Replies
237 Views
Last post January 23, 2024, 1038 UTC
by kris

 

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