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
6407 Views
Last post July 19, 2022, 2354 UTC
by Ray Lalleu
44 Replies
11292 Views
Last post May 15, 2023, 1649 UTC
by fox558
1 Replies
4594 Views
Last post November 05, 2022, 2032 UTC
by Ray Lalleu
0 Replies
2395 Views
Last post February 07, 2023, 0315 UTC
by Shortwave_Listener
2 Replies
687 Views
Last post November 11, 2021, 2351 UTC
by kris
2 Replies
573 Views
Last post June 17, 2022, 2035 UTC
by Panda_NL
3 Replies
603 Views
Last post June 17, 2022, 2123 UTC
by Ray Lalleu
3 Replies
506 Views
Last post February 19, 2023, 1340 UTC
by Ray Lalleu
3 Replies
457 Views
Last post February 19, 2023, 1802 UTC
by Ray Lalleu
0 Replies
336 Views
Last post February 19, 2023, 1601 UTC
by AlexRadioDX
1 Replies
367 Views
Last post April 23, 2023, 1358 UTC
by Ray Lalleu
1 Replies
470 Views
Last post April 23, 2023, 1921 UTC
by Ray Lalleu
0 Replies
141 Views
Last post December 31, 2023, 1240 UTC
by AlexRadioDX
0 Replies
56 Views
Last post December 31, 2023, 1244 UTC
by AlexRadioDX
0 Replies
69 Views
Last post December 31, 2023, 1549 UTC
by AlexRadioDX
0 Replies
92 Views
Last post February 04, 2024, 1029 UTC
by AlexRadioDX
3 Replies
755 Views
Last post December 25, 2021, 2212 UTC
by TRI International
0 Replies
853 Views
Last post August 25, 2018, 1119 UTC
by alinton
3 Replies
1015 Views
Last post September 05, 2018, 1834 UTC
by Ray Lalleu
0 Replies
752 Views
Last post October 21, 2018, 1150 UTC
by alinton

 

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