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
0 Replies
953 Views
Last post January 10, 2019, 2341 UTC
by ChrisSmolinski
1 Replies
1005 Views
Last post February 16, 2021, 0001 UTC
by Skipmuck
4 Replies
1386 Views
Last post March 02, 2019, 0537 UTC
by Andrew Yoder
2 Replies
2370 Views
Last post October 26, 2017, 0001 UTC
by ChrisLobdell
0 Replies
1212 Views
Last post November 21, 2017, 1205 UTC
by ChrisSmolinski
0 Replies
903 Views
Last post November 06, 2018, 2303 UTC
by ChrisSmolinski
0 Replies
1352 Views
Last post February 12, 2018, 1156 UTC
by ChrisSmolinski
0 Replies
927 Views
Last post October 17, 2023, 1155 UTC
by ChrisSmolinski
3 Replies
1495 Views
Last post January 12, 2019, 0109 UTC
by cgalazt
0 Replies
1043 Views
Last post January 04, 2024, 1256 UTC
by ChrisSmolinski
0 Replies
706 Views
Last post May 01, 2024, 1125 UTC
by ChrisSmolinski
0 Replies
848 Views
Last post February 24, 2021, 1314 UTC
by ChrisSmolinski
0 Replies
3034 Views
Last post March 20, 2017, 1232 UTC
by ChrisSmolinski
0 Replies
843 Views
Last post July 31, 2018, 2348 UTC
by ChrisSmolinski
1 Replies
1589 Views
Last post October 26, 2017, 2356 UTC
by R4002
0 Replies
1044 Views
Last post September 16, 2018, 2320 UTC
by ChrisSmolinski
1 Replies
1249 Views
Last post March 28, 2019, 2358 UTC
by Ray Lalleu
0 Replies
135 Views
Last post July 01, 2025, 1230 UTC
by ChrisSmolinski
1 Replies
1332 Views
Last post December 29, 2017, 0356 UTC
by ve6jy
0 Replies
1084 Views
Last post November 08, 2018, 1124 UTC
by ChrisSmolinski

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns