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
5 Replies
2650 Views
Last post October 24, 2023, 0029 UTC
by Shortwave_Listener
5 Replies
1133 Views
Last post September 28, 2022, 0221 UTC
by Shortwave_Listener
4 Replies
2361 Views
Last post February 28, 2018, 0049 UTC
by cgalazt
4 Replies
4633 Views
Last post July 26, 2019, 0625 UTC
by Daniel Wyllyans
4 Replies
1278 Views
Last post January 25, 2023, 0004 UTC
by Radio Star
4 Replies
1140 Views
Last post March 20, 2023, 0035 UTC
by Chuck54
4 Replies
1831 Views
Last post February 19, 2018, 2313 UTC
by ChrisSmolinski
4 Replies
1227 Views
Last post March 13, 2023, 0032 UTC
by myteaquinn
4 Replies
1050 Views
Last post January 29, 2023, 2244 UTC
by Skipmuck
4 Replies
1589 Views
Last post December 09, 2019, 1132 UTC
by ChrisSmolinski
4 Replies
1421 Views
Last post November 06, 2020, 0946 UTC
by RobRich
4 Replies
2605 Views
Last post October 04, 2017, 1552 UTC
by ChrisSmolinski
4 Replies
1269 Views
Last post February 17, 2023, 0157 UTC
by FelixChapel
4 Replies
1077 Views
Last post January 06, 2023, 1218 UTC
by ChrisSmolinski
4 Replies
1340 Views
Last post June 16, 2023, 0059 UTC
by N2MLP
4 Replies
910 Views
Last post September 03, 2023, 1302 UTC
by ChrisSmolinski
4 Replies
1404 Views
Last post August 18, 2018, 2320 UTC
by bubblova
4 Replies
1021 Views
Last post December 18, 2022, 1946 UTC
by Bali_Frank
4 Replies
1126 Views
Last post February 15, 2023, 0136 UTC
by Treehouse SWL
4 Replies
1141 Views
Last post March 22, 2023, 1321 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