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
173 Views
Last post April 11, 2025, 1939 UTC
by Ray Lalleu
0 Replies
339 Views
Last post May 02, 2020, 0903 UTC
by Ray Lalleu
0 Replies
365 Views
Last post January 12, 2022, 1033 UTC
by Ray Lalleu
0 Replies
386 Views
Last post November 04, 2018, 1557 UTC
by Ray Lalleu
1 Replies
393 Views
Last post November 06, 2020, 2105 UTC
by kris
1 Replies
315 Views
Last post July 28, 2022, 2044 UTC
by europirate
1 Replies
414 Views
Last post May 11, 2021, 1932 UTC
by kris
1 Replies
277 Views
Last post April 12, 2023, 1657 UTC
by kris
0 Replies
496 Views
Last post April 10, 2019, 1912 UTC
by Ray Lalleu
0 Replies
381 Views
Last post February 03, 2021, 1644 UTC
by Ray Lalleu
0 Replies
429 Views
Last post December 05, 2021, 2127 UTC
by Ray Lalleu
0 Replies
222 Views
Last post December 12, 2022, 0937 UTC
by Ray Lalleu
2 Replies
314 Views
Last post November 16, 2024, 1755 UTC
by dxace1
1 Replies
551 Views
Last post September 15, 2018, 1951 UTC
by kris
0 Replies
384 Views
Last post December 08, 2019, 2139 UTC
by Ray Lalleu
0 Replies
380 Views
Last post September 28, 2020, 1036 UTC
by Ray Lalleu
1 Replies
423 Views
Last post June 11, 2022, 0153 UTC
by Shortwave_Listener
0 Replies
340 Views
Last post June 20, 2020, 2125 UTC
by Ray Lalleu
0 Replies
450 Views
Last post March 13, 2022, 0950 UTC
by Ray Lalleu
0 Replies
484 Views
Last post February 05, 2019, 1419 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