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
12308 Views
Last post July 19, 2022, 2354 UTC
by Ray Lalleu
0 Replies
4528 Views
Last post February 07, 2023, 0315 UTC
by Shortwave_Listener
46 Replies
17882 Views
Last post July 28, 2024, 1558 UTC
by fox558
2 Replies
1100 Views
Last post December 30, 2024, 0839 UTC
by 26354
0 Replies
5451 Views
Last post March 30, 2012, 1421 UTC
by ChrisSmolinski
3 Replies
3860 Views
Last post March 30, 2012, 1424 UTC
by Andrew Yoder
1 Replies
2933 Views
Last post March 31, 2012, 0021 UTC
by Andrew Yoder
0 Replies
2687 Views
Last post March 31, 2012, 1118 UTC
by ChrisSmolinski
0 Replies
5043 Views
Last post March 31, 2012, 1126 UTC
by ChrisSmolinski
1 Replies
2642 Views
Last post March 31, 2012, 1225 UTC
by textim
0 Replies
2320 Views
Last post March 31, 2012, 1242 UTC
by ChrisSmolinski
3 Replies
2848 Views
Last post March 31, 2012, 1255 UTC
by rdla4
0 Replies
2547 Views
Last post March 31, 2012, 1308 UTC
by ChrisSmolinski
3 Replies
3537 Views
Last post March 31, 2012, 1341 UTC
by ChrisSmolinski
0 Replies
2440 Views
Last post March 31, 2012, 1348 UTC
by ChrisSmolinski
0 Replies
2238 Views
Last post March 31, 2012, 1416 UTC
by ChrisSmolinski
0 Replies
2587 Views
Last post March 31, 2012, 1419 UTC
by ChrisSmolinski
0 Replies
2403 Views
Last post March 31, 2012, 1527 UTC
by ChrisSmolinski
4 Replies
3140 Views
Last post March 31, 2012, 1909 UTC
by MR. SHORTWAVE
0 Replies
5881 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 House Flag
by MitchellTimeDesigns