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
1070 Views
Last post December 20, 2017, 0017 UTC
by ChrisSmolinski
2 Replies
979 Views
Last post March 30, 2022, 2211 UTC
by Skipmuck
0 Replies
1188 Views
Last post November 11, 2017, 2344 UTC
by ChrisSmolinski
3 Replies
1253 Views
Last post August 22, 2018, 2335 UTC
by blw
1 Replies
2359 Views
Last post April 16, 2025, 1420 UTC
by myteaquinn
0 Replies
1732 Views
Last post October 03, 2017, 2251 UTC
by ChrisSmolinski
3 Replies
1269 Views
Last post January 31, 2021, 0053 UTC
by Markokpik
0 Replies
1088 Views
Last post November 05, 2020, 1415 UTC
by ChrisSmolinski
0 Replies
925 Views
Last post January 25, 2019, 2318 UTC
by ChrisSmolinski
3 Replies
1506 Views
Last post January 03, 2019, 2351 UTC
by relaxing
0 Replies
1034 Views
Last post March 08, 2018, 1325 UTC
by ChrisSmolinski
0 Replies
851 Views
Last post November 28, 2018, 2310 UTC
by ChrisSmolinski
0 Replies
1030 Views
Last post November 23, 2019, 2235 UTC
by ChrisSmolinski
1 Replies
1368 Views
Last post December 20, 2017, 2334 UTC
by DonMooreDXer
0 Replies
1349 Views
Last post November 11, 2017, 2329 UTC
by ChrisSmolinski
1 Replies
941 Views
Last post August 22, 2018, 2330 UTC
by Ray Lalleu
0 Replies
1577 Views
Last post April 14, 2025, 1114 UTC
by ChrisSmolinski
0 Replies
1739 Views
Last post September 30, 2017, 2247 UTC
by ChrisSmolinski
1 Replies
957 Views
Last post July 11, 2021, 2246 UTC
by Skipmuck
1 Replies
1031 Views
Last post July 05, 2018, 0134 UTC
by Ray Lalleu

 

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