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
0 Replies
402 Views
Last post November 16, 2021, 1655 UTC
by Ray Lalleu
0 Replies
262 Views
Last post December 10, 2020, 1028 UTC
by Ray Lalleu
0 Replies
366 Views
Last post March 17, 2020, 1750 UTC
by Ray Lalleu
0 Replies
449 Views
Last post January 01, 2019, 1037 UTC
by Ray Lalleu
0 Replies
281 Views
Last post February 10, 2024, 1319 UTC
by Ray Lalleu
1 Replies
538 Views
Last post February 23, 2022, 1932 UTC
by kris
1 Replies
396 Views
Last post June 01, 2020, 1409 UTC
by dxace1
1 Replies
469 Views
Last post May 11, 2025, 1804 UTC
by prldx
0 Replies
212 Views
Last post July 23, 2023, 1733 UTC
by Ray Lalleu
1 Replies
470 Views
Last post August 08, 2021, 1003 UTC
by Bali_Frank
1 Replies
519 Views
Last post November 14, 2019, 1917 UTC
by ChrisSmolinski
1 Replies
325 Views
Last post November 12, 2022, 1818 UTC
by kris
1 Replies
449 Views
Last post January 16, 2021, 2355 UTC
by kris
0 Replies
418 Views
Last post March 24, 2023, 0951 UTC
by Ray Lalleu
2 Replies
962 Views
Last post April 23, 2021, 1738 UTC
by Bali_Frank
1 Replies
539 Views
Last post July 13, 2019, 1904 UTC
by Jock Wilson
0 Replies
651 Views
Last post May 15, 2018, 1659 UTC
by Ray Lalleu
3 Replies
559 Views
Last post July 17, 2024, 2303 UTC
by kris
0 Replies
200 Views
Last post September 10, 2023, 1026 UTC
by Ray Lalleu
0 Replies
401 Views
Last post July 03, 2022, 1656 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 Garden Flag
by MitchellTimeDesigns