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
8 Replies
675 Views
Last post March 28, 2025, 1607 UTC
by Sealord
10 Replies
654 Views
Last post March 28, 2025, 1327 UTC
by Ron Hunsicker
3 Replies
281 Views
Last post March 28, 2025, 1213 UTC
by Andrew Yoder
2 Replies
284 Views
Last post March 28, 2025, 0313 UTC
by Sarge94
3 Replies
289 Views
Last post March 28, 2025, 0049 UTC
by Quasar
6 Replies
400 Views
Last post March 27, 2025, 1915 UTC
by hsmith77
9 Replies
495 Views
Last post March 27, 2025, 1850 UTC
by Tony_Pavick
8 Replies
590 Views
Last post March 27, 2025, 0215 UTC
by Markokpik
9 Replies
590 Views
Last post March 27, 2025, 0126 UTC
by blw
15 Replies
966 Views
Last post March 27, 2025, 0106 UTC
by Quasar
2 Replies
356 Views
Last post March 26, 2025, 2152 UTC
by Radiouser
2 Replies
297 Views
Last post March 26, 2025, 2145 UTC
by hsmith77
5 Replies
410 Views
Last post March 26, 2025, 2113 UTC
by dxwingr
7 Replies
479 Views
Last post March 26, 2025, 2112 UTC
by dxwingr
5 Replies
524 Views
Last post March 26, 2025, 0203 UTC
by Molvania Poacher
0 Replies
203 Views
Last post March 26, 2025, 0135 UTC
by Skipmuck
1 Replies
237 Views
Last post March 26, 2025, 0027 UTC
by Radiouser
10 Replies
731 Views
Last post March 26, 2025, 0011 UTC
by Molvania Poacher
3 Replies
365 Views
Last post March 25, 2025, 2209 UTC
by N2MLP
7 Replies
515 Views
Last post March 25, 2025, 2048 UTC
by Radio Star

 

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