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
5 Replies
2063 Views
Last post September 22, 2015, 0153 UTC
by radio_cosmo
5 Replies
1778 Views
Last post September 20, 2015, 2332 UTC
by redhat
5 Replies
1415 Views
Last post September 19, 2015, 1818 UTC
by ByteBORG
5 Replies
1904 Views
Last post September 17, 2015, 1957 UTC
by Mentholyptus
5 Replies
1576 Views
Last post September 16, 2015, 2156 UTC
by aurora
5 Replies
654 Views
Last post February 01, 2025, 0225 UTC
by N2MLP
5 Replies
614 Views
Last post January 30, 2025, 0242 UTC
by Radiouser
5 Replies
587 Views
Last post January 28, 2025, 2334 UTC
by Doc Roe
5 Replies
579 Views
Last post January 28, 2025, 2026 UTC
by Treehouse SWL
5 Replies
666 Views
Last post January 17, 2025, 0254 UTC
by shadypyro
5 Replies
1058 Views
Last post January 16, 2025, 1958 UTC
by ChrisSmolinski
5 Replies
812 Views
Last post January 11, 2025, 0252 UTC
by N2MLP
5 Replies
600 Views
Last post January 11, 2025, 0249 UTC
by N2MLP
5 Replies
856 Views
Last post January 10, 2025, 0207 UTC
by BallSmacker
5 Replies
648 Views
Last post January 08, 2025, 1629 UTC
by Chuck54
5 Replies
546 Views
Last post January 04, 2025, 0403 UTC
by Radiouser
5 Replies
502 Views
Last post January 02, 2025, 1722 UTC
by dxace1
5 Replies
637 Views
Last post January 02, 2025, 1437 UTC
by Sarge94
5 Replies
1090 Views
Last post January 02, 2025, 0300 UTC
by taschenrechner
5 Replies
502 Views
Last post January 01, 2025, 0344 UTC
by TRI International

 

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