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
327 Views
Last post March 14, 2023, 1849 UTC
by kris
0 Replies
352 Views
Last post January 07, 2021, 1701 UTC
by Ray Lalleu
1 Replies
479 Views
Last post October 31, 2022, 1952 UTC
by Ronald_Mullis
1 Replies
559 Views
Last post October 30, 2023, 2250 UTC
by kris
0 Replies
409 Views
Last post November 03, 2019, 1317 UTC
by Ray Lalleu
5 Replies
718 Views
Last post September 05, 2020, 1004 UTC
by Ray Lalleu
1 Replies
394 Views
Last post May 14, 2022, 2048 UTC
by kris
0 Replies
429 Views
Last post May 24, 2020, 0721 UTC
by Ray Lalleu
2 Replies
493 Views
Last post February 13, 2022, 1000 UTC
by Bali_Frank
0 Replies
619 Views
Last post February 02, 2024, 1836 UTC
by Ray Lalleu
1 Replies
558 Views
Last post December 21, 2018, 2110 UTC
by kris
0 Replies
354 Views
Last post December 01, 2020, 1359 UTC
by Ray Lalleu
1 Replies
323 Views
Last post September 06, 2022, 1915 UTC
by kris
0 Replies
340 Views
Last post June 09, 2021, 1830 UTC
by Ray Lalleu
0 Replies
297 Views
Last post March 29, 2025, 1142 UTC
by Ray Lalleu
0 Replies
338 Views
Last post May 07, 2019, 1518 UTC
by Ray Lalleu
0 Replies
412 Views
Last post April 21, 2020, 1041 UTC
by Ray Lalleu
1 Replies
460 Views
Last post March 01, 2021, 1540 UTC
by TRI International
0 Replies
394 Views
Last post December 31, 2021, 1141 UTC
by Ray Lalleu
1 Replies
458 Views
Last post January 22, 2023, 1934 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