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
6 Replies
1143 Views
Last post August 31, 2025, 1405 UTC
by N2MLP
0 Replies
2212 Views
Last post February 12, 2025, 1637 UTC
by R4002
5 Replies
2041 Views
Last post March 06, 2023, 0229 UTC
by shadypyro
0 Replies
802 Views
Last post November 22, 2024, 0006 UTC
by Shortwave_Listener
0 Replies
1569 Views
Last post June 19, 2025, 0459 UTC
by Shortwave_Listener
0 Replies
1515 Views
Last post January 18, 2025, 0137 UTC
by Shortwave_Listener
3 Replies
6316 Views
Last post January 02, 2014, 2147 UTC
by jFarley
0 Replies
1277 Views
Last post October 19, 2021, 1157 UTC
by ChrisSmolinski
3 Replies
3138 Views
Last post July 30, 2019, 1827 UTC
by ChrisSmolinski
1 Replies
1333 Views
Last post October 06, 2021, 0015 UTC
by RobRich
0 Replies
1084 Views
Last post September 27, 2021, 1447 UTC
by ChrisSmolinski
0 Replies
1174 Views
Last post October 22, 2021, 2025 UTC
by RF_Cat
0 Replies
1172 Views
Last post April 26, 2023, 1432 UTC
by ChrisSmolinski
0 Replies
1480 Views
Last post March 23, 2017, 2212 UTC
by ChrisSmolinski
1 Replies
1435 Views
Last post February 11, 2023, 0440 UTC
by Cross the Rubicon
0 Replies
1629 Views
Last post February 17, 2020, 0539 UTC
by ThaDood
0 Replies
892 Views
Last post September 27, 2025, 1651 UTC
by ChrisSmolinski
0 Replies
1091 Views
Last post December 18, 2018, 2217 UTC
by R4002
8 Replies
3400 Views
Last post October 15, 2018, 1125 UTC
by R4002
0 Replies
909 Views
Last post October 25, 2022, 1225 UTC
by mike

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns