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
755 Views
Last post July 05, 2014, 0550 UTC
by Fansome
0 Replies
755 Views
Last post July 15, 2014, 1626 UTC
by ChrisSmolinski
0 Replies
754 Views
Last post April 14, 2019, 0739 UTC
by WildVirtue
0 Replies
753 Views
Last post February 25, 2022, 0211 UTC
by ~SIGINT~
0 Replies
753 Views
Last post January 14, 2017, 1432 UTC
by skeezix
0 Replies
753 Views
Last post March 16, 2020, 1322 UTC
by Ray Lalleu
Satellite resources/tools

Started by Fansome

0 Replies
752 Views
Last post June 12, 2014, 1342 UTC
by Fansome
0 Replies
752 Views
Last post May 06, 2016, 1603 UTC
by ChrisSmolinski
0 Replies
751 Views
Last post July 06, 2021, 1254 UTC
by ChrisSmolinski
0 Replies
751 Views
Last post November 12, 2019, 1129 UTC
by ChrisSmolinski
0 Replies
751 Views
Last post February 18, 2019, 1321 UTC
by ChrisSmolinski
0 Replies
751 Views
Last post April 14, 2019, 2036 UTC
by ChrisSmolinski
0 Replies
751 Views
Last post February 21, 2022, 2239 UTC
by Traveling Wave
Propagation

Started by Fansome

0 Replies
751 Views
Last post March 18, 2016, 2203 UTC
by Fansome
1 Replies
750 Views
Last post August 14, 2023, 2030 UTC
by ~SIGINT~
Propagation

Started by Fansome

0 Replies
749 Views
Last post September 11, 2015, 2101 UTC
by Fansome
1 Replies
749 Views
Last post May 05, 2023, 1426 UTC
by Shortwave_Listener
0 Replies
749 Views
Last post June 25, 2013, 1901 UTC
by Fansome
0 Replies
749 Views
Last post January 14, 2020, 0216 UTC
by CoolAM Radio
Propagation

Started by Fansome

0 Replies
749 Views
Last post April 11, 2014, 1555 UTC
by Fansome

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns