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
2 Replies
1578 Views
Last post January 28, 2018, 1459 UTC
by ChrisSmolinski
5 Replies
1577 Views
Last post October 22, 2021, 1226 UTC
by ChrisSmolinski
2 Replies
1576 Views
Last post October 06, 2025, 2355 UTC
by J. Carlos Pérez Montero
1 Replies
1576 Views
Last post March 15, 2018, 1257 UTC
by ChrisSmolinski
1 Replies
1575 Views
Last post December 12, 2018, 2324 UTC
by andres87
2 Replies
1574 Views
Last post February 10, 2019, 2321 UTC
by Daniel Wyllyans
4 Replies
1572 Views
Last post November 06, 2020, 0946 UTC
by RobRich
2 Replies
1570 Views
Last post December 24, 2017, 1617 UTC
by ChrisSmolinski
2 Replies
1566 Views
Last post October 08, 2020, 1024 UTC
by ChrisSmolinski
1 Replies
1566 Views
Last post February 26, 2018, 0104 UTC
by BOR
2 Replies
1559 Views
Last post January 04, 2020, 0215 UTC
by myteaquinn
0 Replies
1557 Views
Last post November 01, 2017, 1115 UTC
by ChrisSmolinski
4 Replies
1556 Views
Last post November 05, 2018, 2351 UTC
by slowtrain
1 Replies
1555 Views
Last post November 12, 2017, 2327 UTC
by Skipmuck
0 Replies
1555 Views
Last post August 13, 2018, 1054 UTC
by Daniel Wyllyans
0 Replies
1550 Views
Last post April 01, 2018, 1141 UTC
by Daniel Wyllyans
4 Replies
1547 Views
Last post April 17, 2022, 1641 UTC
by Skipmuck
1 Replies
1546 Views
Last post November 04, 2017, 2311 UTC
by Skipmuck
3 Replies
1546 Views
Last post December 23, 2019, 1333 UTC
by ChrisSmolinski
1 Replies
1545 Views
Last post September 28, 2018, 2139 UTC
by cgalazt

 

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