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
2275 Views
Last post November 09, 2018, 1051 UTC
by ChrisSmolinski
1 Replies
2273 Views
Last post December 30, 2012, 0026 UTC
by BDM
0 Replies
2273 Views
Last post September 03, 2024, 1127 UTC
by ChrisSmolinski
0 Replies
2270 Views
Last post March 01, 2018, 0220 UTC
by Kilokat7
0 Replies
2267 Views
Last post June 15, 2025, 1534 UTC
by ChrisSmolinski
5 Replies
2264 Views
Last post October 09, 2019, 0423 UTC
by JimIO
0 Replies
2261 Views
Last post September 06, 2025, 1958 UTC
by ChrisSmolinski
2 Replies
2260 Views
Last post December 01, 2012, 1615 UTC
by ETM71
3 Replies
2228 Views
Last post February 08, 2022, 1215 UTC
by ChrisSmolinski
3 Replies
2224 Views
Last post December 31, 2022, 1900 UTC
by Shortwave_Listener
0 Replies
2213 Views
Last post February 21, 2018, 0127 UTC
by Kilokat7
2 Replies
2203 Views
Last post December 22, 2012, 2208 UTC
by Pigmeat
6 Replies
2202 Views
Last post October 27, 2019, 1718 UTC
by ChrisSmolinski
1 Replies
2199 Views
Last post December 16, 2013, 0841 UTC
by jdstephens
3 Replies
2185 Views
Last post December 21, 2013, 0418 UTC
by refmo
0 Replies
2184 Views
Last post April 21, 2013, 1035 UTC
by Kilokat7
3 Replies
2183 Views
Last post January 04, 2014, 0359 UTC
by STF_RI
0 Replies
2161 Views
Last post November 15, 2018, 0120 UTC
by Kilokat7
0 Replies
2158 Views
Last post February 06, 2025, 1343 UTC
by ChrisSmolinski
2 Replies
2156 Views
Last post May 30, 2018, 0213 UTC
by ChrisLobdell

 

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