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
1 Replies
7427 Views
Last post July 19, 2022, 2354 UTC
by Ray Lalleu
0 Replies
2750 Views
Last post February 07, 2023, 0315 UTC
by Shortwave_Listener
44 Replies
12502 Views
Last post May 15, 2023, 1649 UTC
by fox558
2 Replies
5317 Views
Last post June 03, 2024, 1633 UTC
by ukdxer
0 Replies
5012 Views
Last post March 30, 2012, 1421 UTC
by ChrisSmolinski
3 Replies
3400 Views
Last post March 30, 2012, 1424 UTC
by Andrew Yoder
1 Replies
2515 Views
Last post March 31, 2012, 0021 UTC
by Andrew Yoder
0 Replies
2285 Views
Last post March 31, 2012, 1118 UTC
by ChrisSmolinski
0 Replies
4672 Views
Last post March 31, 2012, 1126 UTC
by ChrisSmolinski
1 Replies
2255 Views
Last post March 31, 2012, 1225 UTC
by textim
0 Replies
1941 Views
Last post March 31, 2012, 1242 UTC
by ChrisSmolinski
3 Replies
2427 Views
Last post March 31, 2012, 1255 UTC
by rdla4
0 Replies
2144 Views
Last post March 31, 2012, 1308 UTC
by ChrisSmolinski
3 Replies
3126 Views
Last post March 31, 2012, 1341 UTC
by ChrisSmolinski
0 Replies
2075 Views
Last post March 31, 2012, 1348 UTC
by ChrisSmolinski
0 Replies
1866 Views
Last post March 31, 2012, 1416 UTC
by ChrisSmolinski
0 Replies
2244 Views
Last post March 31, 2012, 1419 UTC
by ChrisSmolinski
0 Replies
2055 Views
Last post March 31, 2012, 1527 UTC
by ChrisSmolinski
4 Replies
2780 Views
Last post March 31, 2012, 1909 UTC
by MR. SHORTWAVE
0 Replies
5530 Views
Last post March 31, 2012, 2241 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