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
409 Views
Last post February 08, 2022, 1912 UTC
by kris
0 Replies
366 Views
Last post February 26, 2021, 1653 UTC
by Ray Lalleu
0 Replies
456 Views
Last post May 22, 2020, 0910 UTC
by Ray Lalleu
0 Replies
390 Views
Last post May 04, 2019, 2030 UTC
by Ray Lalleu
0 Replies
132 Views
Last post May 03, 2025, 1330 UTC
by Ray Lalleu
0 Replies
209 Views
Last post May 04, 2024, 0717 UTC
by Ray Lalleu
0 Replies
403 Views
Last post May 12, 2022, 1643 UTC
by Ray Lalleu
0 Replies
257 Views
Last post September 02, 2020, 1842 UTC
by Ray Lalleu
0 Replies
474 Views
Last post October 31, 2019, 1937 UTC
by Ray Lalleu
1 Replies
304 Views
Last post October 28, 2023, 1514 UTC
by kris
0 Replies
387 Views
Last post November 05, 2021, 1739 UTC
by Ray Lalleu
1 Replies
492 Views
Last post April 09, 2021, 1832 UTC
by kris
0 Replies
374 Views
Last post June 28, 2019, 2131 UTC
by Ray Lalleu
2 Replies
373 Views
Last post June 30, 2024, 2113 UTC
by ralf_bender
0 Replies
342 Views
Last post June 20, 2022, 2056 UTC
by Ray Lalleu
3 Replies
390 Views
Last post October 20, 2024, 1617 UTC
by kris
0 Replies
211 Views
Last post October 29, 2022, 1031 UTC
by Ray Lalleu
2 Replies
472 Views
Last post January 03, 2021, 1423 UTC
by refmo
0 Replies
480 Views
Last post April 08, 2020, 1553 UTC
by Ray Lalleu
0 Replies
370 Views
Last post February 23, 2019, 1721 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