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
565 Views
Last post April 27, 2025, 1917 UTC
by europirate
0 Replies
565 Views
Last post February 06, 2023, 1518 UTC
by TRI International
0 Replies
565 Views
Last post May 05, 2022, 1956 UTC
by Ray Lalleu
0 Replies
565 Views
Last post March 15, 2022, 2223 UTC
by Ray Lalleu
0 Replies
565 Views
Last post May 09, 2025, 2038 UTC
by europirate
3 Replies
566 Views
Last post October 25, 2022, 2055 UTC
by ralf_bender
0 Replies
566 Views
Last post March 16, 2022, 2111 UTC
by Ray Lalleu
0 Replies
566 Views
Last post April 28, 2025, 2019 UTC
by europirate
0 Replies
566 Views
Last post January 24, 2022, 1738 UTC
by Ray Lalleu
0 Replies
568 Views
Last post August 31, 2022, 2054 UTC
by kris
1 Replies
568 Views
Last post September 01, 2022, 2034 UTC
by kris
0 Replies
568 Views
Last post March 24, 2022, 2206 UTC
by Ray Lalleu
0 Replies
568 Views
Last post February 20, 2022, 1246 UTC
by TRI International
0 Replies
568 Views
Last post January 17, 2022, 1826 UTC
by Ray Lalleu
2 Replies
569 Views
Last post December 18, 2023, 1000 UTC
by TRI International
1 Replies
569 Views
Last post October 18, 2022, 2033 UTC
by Ray Lalleu
0 Replies
569 Views
Last post April 19, 2022, 0855 UTC
by TRI International
0 Replies
569 Views
Last post February 20, 2022, 1957 UTC
by Ray Lalleu
1 Replies
570 Views
Last post December 09, 2022, 1745 UTC
by Ray Lalleu
1 Replies
570 Views
Last post December 15, 2023, 1911 UTC
by FOX

 

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