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
2 Replies
677 Views
Last post February 20, 2025, 1359 UTC
by ChrisSmolinski
2 Replies
503 Views
Last post February 19, 2025, 0205 UTC
by myteaquinn
2 Replies
381 Views
Last post February 17, 2025, 2237 UTC
by ChrisSmolinski
2 Replies
277 Views
Last post February 16, 2025, 0335 UTC
by Radiouser
2 Replies
355 Views
Last post February 16, 2025, 1612 UTC
by ChrisSmolinski
2 Replies
414 Views
Last post February 14, 2025, 0003 UTC
by hammarhead
2 Replies
442 Views
Last post February 04, 2025, 0127 UTC
by Radiouser
2 Replies
368 Views
Last post February 03, 2025, 1319 UTC
by ChrisSmolinski
1 Replies
155 Views
Last post June 11, 2025, 2342 UTC
by Radiouser
1 Replies
150 Views
Last post June 11, 2025, 2306 UTC
by sternradio666
1 Replies
210 Views
Last post June 08, 2025, 1126 UTC
by Andrew Yoder
1 Replies
254 Views
Last post June 08, 2025, 1535 UTC
by Tony_Pavick
1 Replies
242 Views
Last post June 08, 2025, 1350 UTC
by ChrisSmolinski
1 Replies
242 Views
Last post June 07, 2025, 2133 UTC
by Beerus Maximus
1 Replies
238 Views
Last post June 11, 2025, 1340 UTC
by Ron Hunsicker
1 Replies
327 Views
Last post June 08, 2025, 2213 UTC
by Ron Hunsicker
1 Replies
323 Views
Last post June 01, 2025, 1512 UTC
by ChrisSmolinski
1 Replies
368 Views
Last post May 30, 2025, 1151 UTC
by ChrisLobdell
1 Replies
266 Views
Last post May 25, 2025, 2140 UTC
by Uncle Hank
1 Replies
282 Views
Last post May 23, 2025, 0318 UTC
by myteaquinn

 

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