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
493 Views
Last post August 28, 2019, 1939 UTC
by Ray Lalleu
0 Replies
195 Views
Last post August 28, 2023, 2006 UTC
by Ray Lalleu
0 Replies
342 Views
Last post December 26, 2019, 0921 UTC
by Ray Lalleu
1 Replies
227 Views
Last post December 30, 2022, 1153 UTC
by TRI International
1 Replies
406 Views
Last post February 14, 2021, 0946 UTC
by TRI International
0 Replies
514 Views
Last post April 22, 2019, 2047 UTC
by Ray Lalleu
1 Replies
402 Views
Last post April 30, 2022, 1923 UTC
by Shortwave_Listener
0 Replies
506 Views
Last post July 10, 2018, 1728 UTC
by Ray Lalleu
0 Replies
627 Views
Last post June 02, 2018, 2137 UTC
by Ray Lalleu
0 Replies
275 Views
Last post August 13, 2022, 1314 UTC
by Ray Lalleu
0 Replies
357 Views
Last post February 21, 2020, 1618 UTC
by Ray Lalleu
1 Replies
521 Views
Last post November 24, 2018, 1653 UTC
by kris
0 Replies
1552 Views
Last post January 21, 2024, 0957 UTC
by Ray Lalleu
0 Replies
310 Views
Last post March 28, 2021, 0847 UTC
by Ray Lalleu
0 Replies
472 Views
Last post June 12, 2019, 1814 UTC
by Ray Lalleu
0 Replies
60 Views
Last post April 23, 2025, 0743 UTC
by Ray Lalleu
0 Replies
369 Views
Last post July 09, 2021, 2133 UTC
by Ray Lalleu
1 Replies
539 Views
Last post October 18, 2019, 2014 UTC
by The Ether Hacker
1 Replies
409 Views
Last post October 14, 2022, 2015 UTC
by Bali_Frank
0 Replies
319 Views
Last post December 25, 2020, 1709 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