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
1340 Views
Last post November 29, 2020, 0306 UTC
by alleycat
0 Replies
2793 Views
Last post May 18, 2013, 1358 UTC
by w5cdt
0 Replies
3425 Views
Last post May 14, 2013, 2335 UTC
by w5cdt
0 Replies
2473 Views
Last post August 09, 2019, 1143 UTC
by ChrisSmolinski
0 Replies
1334 Views
Last post April 05, 2019, 1506 UTC
by ChrisSmolinski
0 Replies
2272 Views
Last post April 05, 2019, 1730 UTC
by ChrisSmolinski
0 Replies
1669 Views
Last post April 05, 2019, 1711 UTC
by ChrisSmolinski
0 Replies
2315 Views
Last post February 14, 2017, 1624 UTC
by Terry
0 Replies
1087 Views
Last post January 15, 2022, 1910 UTC
by technic
0 Replies
11685 Views
Last post March 27, 2016, 1220 UTC
by SkyWalker
0 Replies
1345 Views
Last post February 19, 2021, 1838 UTC
by ThaDood
0 Replies
2419 Views
Last post April 05, 2019, 1853 UTC
by ChrisSmolinski
0 Replies
15368 Views
Last post January 31, 2015, 0541 UTC
by Rich
0 Replies
1291 Views
Last post March 22, 2019, 1338 UTC
by ChrisSmolinski
0 Replies
3156 Views
Last post December 11, 2014, 1022 UTC
by dxextra
0 Replies
2473 Views
Last post December 11, 2014, 1021 UTC
by dxextra
0 Replies
2331 Views
Last post April 05, 2019, 1730 UTC
by ChrisSmolinski
0 Replies
7267 Views
Last post July 20, 2014, 0022 UTC
by w5cdt
L band monitoring

Started by Josh

0 Replies
2219 Views
Last post September 06, 2019, 1732 UTC
by Josh
0 Replies
4218 Views
Last post April 29, 2013, 1926 UTC
by w5cdt

 

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