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
3013 Views
Last post March 20, 2017, 1232 UTC
by ChrisSmolinski
0 Replies
1064 Views
Last post December 11, 2017, 1243 UTC
by ChrisSmolinski
0 Replies
3271 Views
Last post March 16, 2017, 2338 UTC
by ChrisSmolinski
0 Replies
1196 Views
Last post January 02, 2018, 1155 UTC
by ChrisSmolinski
0 Replies
1103 Views
Last post December 02, 2017, 2335 UTC
by ChrisSmolinski
0 Replies
1012 Views
Last post December 01, 2017, 2304 UTC
by ChrisSmolinski
0 Replies
2086 Views
Last post March 30, 2017, 1349 UTC
by ChrisSmolinski
0 Replies
1008 Views
Last post December 31, 2017, 2310 UTC
by ChrisSmolinski
0 Replies
1690 Views
Last post October 05, 2017, 1214 UTC
by ChrisSmolinski
0 Replies
124 Views
Last post July 03, 2025, 1915 UTC
by Shortwave_Listener
0 Replies
1709 Views
Last post October 03, 2017, 2251 UTC
by ChrisSmolinski
0 Replies
1713 Views
Last post September 30, 2017, 2247 UTC
by ChrisSmolinski
0 Replies
1123 Views
Last post January 12, 2018, 2313 UTC
by ChrisSmolinski
0 Replies
1874 Views
Last post May 22, 2017, 1226 UTC
by ChrisSmolinski
0 Replies
2019 Views
Last post May 07, 2017, 1200 UTC
by Daniel Wyllyans
0 Replies
1039 Views
Last post November 26, 2017, 2307 UTC
by ChrisSmolinski
0 Replies
1073 Views
Last post December 09, 2017, 2318 UTC
by ChrisSmolinski
0 Replies
1117 Views
Last post November 19, 2017, 2334 UTC
by ChrisSmolinski
0 Replies
1865 Views
Last post March 31, 2017, 2329 UTC
by ChrisSmolinski
0 Replies
2401 Views
Last post March 31, 2017, 0259 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 Garden Flag
by MitchellTimeDesigns