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
2 Replies
822 Views
Last post June 03, 2018, 2212 UTC
by Skipmuck
1 Replies
579 Views
Last post May 21, 2022, 2232 UTC
by Grey Fox
1 Replies
458 Views
Last post June 15, 2021, 2005 UTC
by Ray Lalleu
1 Replies
485 Views
Last post August 06, 2021, 1954 UTC
by Ray Lalleu
1 Replies
297 Views
Last post October 29, 2024, 1627 UTC
by Ray Lalleu
1 Replies
548 Views
Last post November 09, 2022, 1755 UTC
by Ray Lalleu
1 Replies
562 Views
Last post December 25, 2021, 1521 UTC
by ukdxer
4 Replies
1041 Views
Last post October 03, 2020, 2153 UTC
by PirateSWL
3 Replies
618 Views
Last post October 22, 2022, 1821 UTC
by Ray Lalleu
1 Replies
269 Views
Last post August 19, 2023, 1947 UTC
by Ray Lalleu
0 Replies
427 Views
Last post February 08, 2021, 1151 UTC
by kris
0 Replies
411 Views
Last post November 10, 2020, 1342 UTC
by kris
2 Replies
794 Views
Last post October 16, 2021, 1829 UTC
by Ray Lalleu
2 Replies
829 Views
Last post November 27, 2021, 1933 UTC
by Grey Fox
1 Replies
1149 Views
Last post July 14, 2017, 2259 UTC
by Ray Lalleu
0 Replies
279 Views
Last post August 04, 2023, 0907 UTC
by kris
1 Replies
317 Views
Last post December 30, 2023, 1545 UTC
by Ray Lalleu
1 Replies
124 Views
Last post November 08, 2025, 1222 UTC
by TRI International
1 Replies
609 Views
Last post December 02, 2018, 1319 UTC
by Ray Lalleu
0 Replies
351 Views
Last post October 22, 2023, 1244 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 T-Shirt
by MitchellTimeDesigns