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
604 Views
Last post June 10, 2019, 2226 UTC
by kris
0 Replies
361 Views
Last post May 10, 2020, 1321 UTC
by Ray Lalleu
0 Replies
380 Views
Last post March 27, 2021, 1824 UTC
by Ray Lalleu
1 Replies
521 Views
Last post January 21, 2024, 0857 UTC
by Fisherman
0 Replies
172 Views
Last post January 11, 2025, 1441 UTC
by Ray Lalleu
0 Replies
425 Views
Last post November 24, 2018, 1157 UTC
by Ray Lalleu
0 Replies
319 Views
Last post February 20, 2020, 1614 UTC
by Ray Lalleu
2 Replies
497 Views
Last post November 15, 2020, 1927 UTC
by kris
1 Replies
816 Views
Last post July 08, 2018, 2204 UTC
by Ronald_Mullis
0 Replies
335 Views
Last post August 20, 2020, 1710 UTC
by Ray Lalleu
1 Replies
465 Views
Last post April 30, 2022, 1708 UTC
by Shortwave_Listener
0 Replies
209 Views
Last post April 19, 2024, 1639 UTC
by Ray Lalleu
0 Replies
513 Views
Last post April 22, 2019, 1702 UTC
by Ray Lalleu
1 Replies
504 Views
Last post February 13, 2021, 1927 UTC
by kris
2 Replies
354 Views
Last post December 29, 2022, 1410 UTC
by TRI International
0 Replies
205 Views
Last post November 30, 2024, 1007 UTC
by Ray Lalleu
0 Replies
356 Views
Last post December 25, 2019, 2141 UTC
by Ray Lalleu
3 Replies
604 Views
Last post September 11, 2021, 2055 UTC
by kris
1 Replies
263 Views
Last post August 27, 2023, 2053 UTC
by N2MLP
0 Replies
644 Views
Last post April 24, 2018, 2155 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