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
578 Views
Last post August 02, 2023, 2112 UTC
by ChrisSmolinski
4 Replies
1056 Views
Last post November 27, 2020, 0935 UTC
by Skipmuck
0 Replies
355 Views
Last post September 29, 2024, 2356 UTC
by Skipmuck
0 Replies
451 Views
Last post June 27, 2020, 2350 UTC
by Skipmuck
9 Replies
2473 Views
Last post May 30, 2016, 1431 UTC
by ChrisSmolinski
11 Replies
1363 Views
Last post May 14, 2022, 2340 UTC
by Mophead
2 Replies
413 Views
Last post April 11, 2023, 2031 UTC
by TRI International
2 Replies
1361 Views
Last post September 29, 2017, 2152 UTC
by Ray Lalleu
11 Replies
1719 Views
Last post September 13, 2020, 0057 UTC
by bigd
7 Replies
1762 Views
Last post December 16, 2017, 1307 UTC
by digitalmod
12 Replies
2320 Views
Last post May 19, 2024, 0217 UTC
by Ve3mha
1 Replies
562 Views
Last post July 27, 2020, 2349 UTC
by Bali_Frank
7 Replies
1663 Views
Last post October 26, 2015, 1730 UTC
by ChrisSmolinski
3 Replies
623 Views
Last post August 31, 2023, 0141 UTC
by ~SIGINT~
5 Replies
724 Views
Last post May 07, 2022, 0231 UTC
by BallSmacker
14 Replies
4589 Views
Last post May 04, 2015, 2308 UTC
by ByteBORG
31 Replies
2732 Views
Last post April 09, 2023, 0116 UTC
by Sealord
2 Replies
1026 Views
Last post January 11, 2016, 1151 UTC
by ChrisSmolinski
1 Replies
408 Views
Last post November 30, 2023, 2132 UTC
by Paul65
8 Replies
1657 Views
Last post March 03, 2019, 2345 UTC
by dxace1

 

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