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
487 Views
Last post December 22, 2019, 1557 UTC
by ukdxer
0 Replies
488 Views
Last post April 20, 2019, 1934 UTC
by Ray Lalleu
0 Replies
370 Views
Last post April 25, 2022, 1931 UTC
by Ray Lalleu
1 Replies
488 Views
Last post May 20, 2021, 1934 UTC
by Bali_Frank
1 Replies
441 Views
Last post August 24, 2019, 0817 UTC
by Ray Lalleu
1 Replies
747 Views
Last post July 01, 2018, 2209 UTC
by kris
0 Replies
203 Views
Last post July 23, 2025, 2002 UTC
by Ray Lalleu
1 Replies
346 Views
Last post October 13, 2023, 2201 UTC
by N2MLP
0 Replies
365 Views
Last post August 07, 2022, 1850 UTC
by Ray Lalleu
1 Replies
504 Views
Last post October 20, 2021, 1934 UTC
by Bali_Frank
0 Replies
357 Views
Last post November 13, 2020, 1747 UTC
by Ray Lalleu
0 Replies
376 Views
Last post February 15, 2020, 1914 UTC
by Ray Lalleu
0 Replies
342 Views
Last post January 17, 2024, 1445 UTC
by Ray Lalleu
0 Replies
460 Views
Last post January 22, 2022, 1721 UTC
by Ray Lalleu
3 Replies
683 Views
Last post April 20, 2025, 0753 UTC
by Benoit LEVEQUE
0 Replies
251 Views
Last post June 11, 2023, 1834 UTC
by Ray Lalleu
0 Replies
464 Views
Last post July 04, 2021, 0914 UTC
by Ray Lalleu
1 Replies
685 Views
Last post October 13, 2019, 1235 UTC
by Peter Worth
0 Replies
252 Views
Last post October 07, 2024, 1836 UTC
by Ray Lalleu
0 Replies
249 Views
Last post October 09, 2022, 0901 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