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
437 Views
Last post March 03, 2018, 1519 UTC
by ChrisSmolinski
2 Replies
437 Views
Last post June 19, 2023, 2124 UTC
by N2MLP
0 Replies
437 Views
Last post October 24, 2020, 2141 UTC
by blw
2 Replies
437 Views
Last post October 24, 2024, 0202 UTC
by Quasar
2 Replies
437 Views
Last post February 16, 2023, 0154 UTC
by hsmith77
2 Replies
436 Views
Last post June 25, 2025, 2207 UTC
by myteaquinn
0 Replies
436 Views
Last post August 21, 2023, 1531 UTC
by flexoman61
2 Replies
436 Views
Last post April 13, 2025, 1552 UTC
by N2MLP
0 Replies
436 Views
Last post April 16, 2022, 2016 UTC
by Chuck54
1 Replies
436 Views
Last post March 14, 2023, 1914 UTC
by N2MLP
0 Replies
436 Views
Last post January 15, 2022, 1512 UTC
by Ron Hunsicker
0 Replies
436 Views
Last post March 12, 2024, 1536 UTC
by ChrisSmolinski
4 Replies
436 Views
Last post May 29, 2023, 2245 UTC
by Shortwave_Listener
0 Replies
436 Views
Last post November 16, 2020, 2019 UTC
by ChrisSmolinski
0 Replies
436 Views
Last post October 31, 2023, 1852 UTC
by ChrisLobdell
0 Replies
436 Views
Last post October 31, 2020, 1229 UTC
by ChrisSmolinski
1 Replies
436 Views
Last post March 23, 2024, 1442 UTC
by ChrisSmolinski
0 Replies
435 Views
Last post July 22, 2022, 0526 UTC
by Shortwave_Listener
1 Replies
435 Views
Last post December 07, 2022, 2026 UTC
by flexoman61
0 Replies
435 Views
Last post November 14, 2020, 2210 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