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
0 Replies
448 Views
Last post June 16, 2021, 2050 UTC
by Ray Lalleu
2 Replies
450 Views
Last post May 26, 2023, 2055 UTC
by kris
2 Replies
454 Views
Last post May 19, 2024, 1426 UTC
by Benoit LEVEQUE
0 Replies
384 Views
Last post May 17, 2019, 1552 UTC
by Ray Lalleu
1 Replies
446 Views
Last post March 08, 2021, 1916 UTC
by kris
0 Replies
414 Views
Last post January 26, 2020, 1035 UTC
by Ray Lalleu
0 Replies
226 Views
Last post July 04, 2025, 1948 UTC
by Ray Lalleu
0 Replies
534 Views
Last post June 04, 2018, 1937 UTC
by Ray Lalleu
0 Replies
424 Views
Last post July 29, 2020, 1235 UTC
by Ray Lalleu
1 Replies
507 Views
Last post April 11, 2022, 1730 UTC
by dave1965
1 Replies
401 Views
Last post March 28, 2024, 1852 UTC
by nektaman
1 Replies
665 Views
Last post March 31, 2019, 2034 UTC
by RainBrandy
1 Replies
471 Views
Last post January 30, 2021, 1010 UTC
by kris
0 Replies
417 Views
Last post January 06, 2022, 1602 UTC
by Ray Lalleu
0 Replies
246 Views
Last post December 03, 2022, 1421 UTC
by Ray Lalleu
0 Replies
278 Views
Last post December 31, 2023, 1708 UTC
by Ray Lalleu
1 Replies
251 Views
Last post November 10, 2024, 0830 UTC
by AlexRadioDX
0 Replies
434 Views
Last post October 28, 2018, 1601 UTC
by Ray Lalleu
0 Replies
411 Views
Last post December 01, 2019, 1144 UTC
by Ray Lalleu
0 Replies
312 Views
Last post November 01, 2020, 0804 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 Garden Flag
by MitchellTimeDesigns