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
546 Views
Last post July 14, 2019, 1921 UTC
by dandan22
0 Replies
349 Views
Last post July 16, 2020, 1957 UTC
by Ray Lalleu
0 Replies
420 Views
Last post March 16, 2019, 1654 UTC
by Ray Lalleu
3 Replies
688 Views
Last post January 17, 2021, 1318 UTC
by Stretchyman
0 Replies
241 Views
Last post November 13, 2022, 1627 UTC
by Ray Lalleu
2 Replies
494 Views
Last post November 01, 2024, 2009 UTC
by achim
1 Replies
254 Views
Last post July 25, 2023, 0002 UTC
by N2MLP
0 Replies
191 Views
Last post May 13, 2025, 0822 UTC
by Ray Lalleu
0 Replies
380 Views
Last post June 02, 2020, 1841 UTC
by Ray Lalleu
0 Replies
385 Views
Last post February 26, 2022, 0754 UTC
by Ray Lalleu
1 Replies
374 Views
Last post February 11, 2024, 0751 UTC
by kris
2 Replies
307 Views
Last post February 12, 2025, 1701 UTC
by dxace1
0 Replies
489 Views
Last post January 02, 2019, 2218 UTC
by Ray Lalleu
0 Replies
350 Views
Last post March 18, 2020, 1609 UTC
by Ray Lalleu
1 Replies
453 Views
Last post November 18, 2021, 1723 UTC
by Bali_Frank
0 Replies
249 Views
Last post September 21, 2022, 2026 UTC
by Ray Lalleu
0 Replies
274 Views
Last post November 10, 2023, 1659 UTC
by Ray Lalleu
0 Replies
246 Views
Last post September 24, 2024, 1825 UTC
by Ray Lalleu
0 Replies
513 Views
Last post August 20, 2018, 1728 UTC
by Ray Lalleu
2 Replies
489 Views
Last post September 29, 2019, 1241 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