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
1453 Views
Last post October 23, 2023, 1059 UTC
by ChrisSmolinski
1 Replies
1104 Views
Last post September 18, 2023, 1148 UTC
by ChrisSmolinski
1 Replies
1259 Views
Last post September 05, 2023, 1146 UTC
by ChrisSmolinski
1 Replies
1011 Views
Last post July 23, 2023, 1550 UTC
by ChrisSmolinski
1 Replies
1082 Views
Last post May 31, 2023, 2035 UTC
by TRI International
1 Replies
1351 Views
Last post May 04, 2023, 1643 UTC
by ChrisSmolinski
1 Replies
1077 Views
Last post April 29, 2023, 1826 UTC
by ChrisSmolinski
1 Replies
1545 Views
Last post January 17, 2021, 2227 UTC
by Skipmuck
1 Replies
1150 Views
Last post April 18, 2023, 0918 UTC
by TRI International
1 Replies
1162 Views
Last post April 11, 2023, 0913 UTC
by TRI International
1 Replies
1180 Views
Last post March 24, 2023, 0303 UTC
by DX Pete
1 Replies
1527 Views
Last post December 13, 2020, 1536 UTC
by ChrisSmolinski
1 Replies
1508 Views
Last post December 09, 2020, 1251 UTC
by ChrisSmolinski
1 Replies
1847 Views
Last post December 09, 2020, 0116 UTC
by Kilokat7
1 Replies
1205 Views
Last post January 30, 2023, 1850 UTC
by currentsitguy
1 Replies
1311 Views
Last post January 16, 2023, 1551 UTC
by DX Pete
1 Replies
1923 Views
Last post November 24, 2020, 1426 UTC
by ChrisSmolinski
1 Replies
1494 Views
Last post December 27, 2022, 0201 UTC
by Shortwave_Listener
1 Replies
1245 Views
Last post December 29, 2022, 1646 UTC
by Big Badfish Al
1 Replies
1231 Views
Last post November 20, 2020, 1402 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 T-Shirt
by MitchellTimeDesigns