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
551 Views
Last post April 10, 2021, 2122 UTC
by Ray Lalleu
1 Replies
580 Views
Last post July 30, 2018, 0132 UTC
by Ray Lalleu
1 Replies
487 Views
Last post January 19, 2021, 1919 UTC
by Ray Lalleu
1 Replies
415 Views
Last post August 12, 2021, 2126 UTC
by Ray Lalleu
2 Replies
541 Views
Last post August 26, 2021, 2217 UTC
by Ray Lalleu
1 Replies
248 Views
Last post June 18, 2023, 2027 UTC
by Ray Lalleu
1 Replies
301 Views
Last post February 25, 2023, 1954 UTC
by Ray Lalleu
1 Replies
542 Views
Last post October 24, 2021, 2306 UTC
by Bali_Frank
0 Replies
208 Views
Last post March 08, 2024, 0811 UTC
by kris
1 Replies
451 Views
Last post December 10, 2023, 2016 UTC
by Ray Lalleu
2 Replies
460 Views
Last post January 06, 2021, 1645 UTC
by Ray Lalleu
1 Replies
239 Views
Last post July 11, 2023, 1842 UTC
by Ray Lalleu
0 Replies
472 Views
Last post February 02, 2024, 0811 UTC
by kris
2 Replies
368 Views
Last post September 12, 2024, 1925 UTC
by James_Calais
2 Replies
490 Views
Last post June 07, 2020, 0850 UTC
by kris
2 Replies
482 Views
Last post March 01, 2025, 1715 UTC
by Alex BLR
0 Replies
683 Views
Last post November 28, 2023, 1610 UTC
by kris
2 Replies
406 Views
Last post November 17, 2024, 0137 UTC
by N2MLP
2 Replies
410 Views
Last post February 26, 2023, 1816 UTC
by Mad Radio DXer UK
0 Replies
225 Views
Last post May 18, 2023, 2038 UTC
by kris

 

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