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
3 Replies
353 Views
Last post November 01, 2024, 1755 UTC
by easy listener
3 Replies
530 Views
Last post August 20, 2021, 2036 UTC
by Grey Fox
3 Replies
302 Views
Last post February 02, 2025, 2215 UTC
by kris
3 Replies
200 Views
Last post February 09, 2025, 1142 UTC
by europirate
3 Replies
594 Views
Last post August 07, 2021, 1901 UTC
by kris
3 Replies
760 Views
Last post October 07, 2018, 2224 UTC
by Ray Lalleu
3 Replies
727 Views
Last post October 08, 2019, 1800 UTC
by dandan22
3 Replies
427 Views
Last post September 13, 2024, 2057 UTC
by kris
3 Replies
335 Views
Last post May 19, 2024, 1936 UTC
by electronics-explored
3 Replies
760 Views
Last post October 08, 2018, 1855 UTC
by dxace1
3 Replies
639 Views
Last post September 20, 2021, 2112 UTC
by Grey Fox
3 Replies
630 Views
Last post September 21, 2021, 2129 UTC
by Ray Lalleu
3 Replies
873 Views
Last post November 23, 2019, 2201 UTC
by dxace1
3 Replies
631 Views
Last post September 24, 2021, 1932 UTC
by Pravotorov
3 Replies
859 Views
Last post November 30, 2019, 2152 UTC
by DimBulb
3 Replies
691 Views
Last post September 25, 2021, 1531 UTC
by dxace1
3 Replies
617 Views
Last post December 01, 2019, 2009 UTC
by Dxcan
3 Replies
992 Views
Last post November 03, 2018, 2104 UTC
by Ray Lalleu
3 Replies
626 Views
Last post September 23, 2021, 2045 UTC
by The Ether Hacker
3 Replies
563 Views
Last post September 29, 2021, 1651 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 Garden Flag
by MitchellTimeDesigns