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
384 Views
Last post December 27, 2021, 0831 UTC
by Ray Lalleu
3 Replies
716 Views
Last post December 24, 2023, 0031 UTC
by RobRich
1 Replies
635 Views
Last post October 17, 2018, 2105 UTC
by Skipmuck
0 Replies
391 Views
Last post January 08, 2020, 1822 UTC
by Ray Lalleu
0 Replies
304 Views
Last post October 23, 2020, 1848 UTC
by Ray Lalleu
5 Replies
887 Views
Last post September 24, 2021, 2027 UTC
by dxace1
2 Replies
528 Views
Last post July 06, 2022, 1734 UTC
by Shortwave_Listener
1 Replies
416 Views
Last post September 13, 2023, 1801 UTC
by kris
0 Replies
296 Views
Last post June 20, 2025, 1657 UTC
by Ray Lalleu
1 Replies
614 Views
Last post May 18, 2018, 2110 UTC
by kris
0 Replies
432 Views
Last post July 15, 2019, 1546 UTC
by Ray Lalleu
1 Replies
404 Views
Last post July 17, 2020, 2037 UTC
by FOX
0 Replies
399 Views
Last post April 25, 2021, 0808 UTC
by Ray Lalleu
0 Replies
294 Views
Last post March 17, 2024, 1802 UTC
by Ray Lalleu
0 Replies
415 Views
Last post March 17, 2019, 0846 UTC
by Ray Lalleu
1 Replies
482 Views
Last post January 17, 2021, 2146 UTC
by kris
1 Replies
290 Views
Last post November 14, 2022, 1317 UTC
by kris
0 Replies
150 Views
Last post November 02, 2024, 0717 UTC
by Ray Lalleu
2 Replies
574 Views
Last post November 16, 2019, 2103 UTC
by ChrisSmolinski
0 Replies
211 Views
Last post July 26, 2023, 0824 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 House Flag
by MitchellTimeDesigns