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
1420 Views
Last post August 13, 2012, 0341 UTC
by Shawndx
16 Replies
11006 Views
Last post November 05, 2015, 0241 UTC
by oly1959
1 Replies
1388 Views
Last post August 30, 2010, 0230 UTC
by Zoidberg
5 Replies
1633 Views
Last post January 02, 2016, 1748 UTC
by aquabat
5 Replies
1828 Views
Last post October 08, 2013, 1147 UTC
by ChrisSmolinski
1 Replies
414 Views
Last post February 02, 2025, 1711 UTC
by N2MLP
9 Replies
4968 Views
Last post April 19, 2017, 0250 UTC
by Zoidberg
16 Replies
4561 Views
Last post July 04, 2013, 1514 UTC
by ChrisSmolinski
6 Replies
1631 Views
Last post December 22, 2016, 1323 UTC
by ChrisSmolinski
22 Replies
5567 Views
Last post January 16, 2015, 2208 UTC
by RCCI
9 Replies
2694 Views
Last post August 09, 2013, 1301 UTC
by ChrisSmolinski
13 Replies
3447 Views
Last post February 26, 2013, 0136 UTC
by Zane
7 Replies
2137 Views
Last post October 02, 2012, 2320 UTC
by Nella F.
21 Replies
1679 Views
Last post January 26, 2025, 2223 UTC
by Crater Eddie
18 Replies
3429 Views
Last post May 30, 2018, 2238 UTC
by jFarley
13 Replies
3531 Views
Last post March 14, 2014, 1213 UTC
by ChrisSmolinski
9 Replies
3621 Views
Last post July 06, 2015, 1238 UTC
by ChrisSmolinski
17 Replies
4760 Views
Last post July 03, 2015, 0333 UTC
by Zoidberg
12 Replies
2975 Views
Last post May 18, 2015, 1156 UTC
by ChrisSmolinski
0 Replies
1186 Views
Last post July 20, 2009, 1050 UTC
by Zoidberg

 

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