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
501 Views
Last post July 27, 2020, 2252 UTC
by kris
1 Replies
737 Views
Last post June 03, 2018, 1822 UTC
by The Ether Hacker
2 Replies
349 Views
Last post July 02, 2025, 1959 UTC
by Ray Lalleu
0 Replies
483 Views
Last post October 03, 2021, 0802 UTC
by Ray Lalleu
1 Replies
563 Views
Last post January 25, 2020, 2050 UTC
by Ray Lalleu
2 Replies
424 Views
Last post January 29, 2023, 2044 UTC
by kris
0 Replies
401 Views
Last post March 07, 2021, 1631 UTC
by Ray Lalleu
2 Replies
430 Views
Last post May 18, 2024, 1919 UTC
by kris
1 Replies
350 Views
Last post May 25, 2023, 2134 UTC
by Magnitic
0 Replies
534 Views
Last post September 26, 2019, 1605 UTC
by Ray Lalleu
0 Replies
531 Views
Last post August 16, 2018, 1957 UTC
by Ray Lalleu
0 Replies
191 Views
Last post August 17, 2025, 2004 UTC
by Ray Lalleu
0 Replies
319 Views
Last post September 17, 2022, 1043 UTC
by Ray Lalleu
1 Replies
587 Views
Last post December 06, 2020, 1734 UTC
by kris
2 Replies
784 Views
Last post December 29, 2018, 1934 UTC
by Ray Lalleu
0 Replies
229 Views
Last post February 08, 2024, 1535 UTC
by Ray Lalleu
0 Replies
438 Views
Last post February 20, 2022, 0902 UTC
by Ray Lalleu
0 Replies
402 Views
Last post May 29, 2020, 2159 UTC
by Ray Lalleu
3 Replies
488 Views
Last post May 10, 2025, 0703 UTC
by Benoit LEVEQUE
1 Replies
268 Views
Last post July 21, 2023, 2011 UTC
by europirate

 

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