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
484 Views
Last post March 26, 2022, 2015 UTC
by kris
0 Replies
304 Views
Last post May 24, 2021, 0738 UTC
by Ray Lalleu
0 Replies
370 Views
Last post July 05, 2020, 2133 UTC
by Ray Lalleu
0 Replies
1158 Views
Last post August 30, 2019, 1229 UTC
by Ray Lalleu
0 Replies
411 Views
Last post June 10, 2025, 0753 UTC
by Ray Lalleu
0 Replies
207 Views
Last post August 25, 2024, 2056 UTC
by Ray Lalleu
1 Replies
338 Views
Last post August 30, 2023, 2315 UTC
by N2MLP
0 Replies
312 Views
Last post August 14, 2022, 1544 UTC
by Ray Lalleu
0 Replies
414 Views
Last post December 27, 2019, 1533 UTC
by Ray Lalleu
0 Replies
152 Views
Last post November 30, 2024, 2113 UTC
by Ray Lalleu
2 Replies
328 Views
Last post December 31, 2022, 1339 UTC
by Ray Lalleu
3 Replies
746 Views
Last post April 24, 2019, 0126 UTC
by blw
3 Replies
887 Views
Last post April 20, 2024, 1858 UTC
by Benoit LEVEQUE
2 Replies
860 Views
Last post July 12, 2018, 2307 UTC
by Ronald_Mullis
2 Replies
253 Views
Last post July 30, 2025, 2105 UTC
by Robertas
1 Replies
452 Views
Last post October 18, 2023, 1829 UTC
by kris
3 Replies
624 Views
Last post October 26, 2021, 1653 UTC
by kobalts
0 Replies
456 Views
Last post November 18, 2020, 1715 UTC
by Ray Lalleu
0 Replies
291 Views
Last post February 23, 2020, 0938 UTC
by Ray Lalleu
0 Replies
614 Views
Last post November 25, 2018, 1403 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 T-Shirt
by MitchellTimeDesigns