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
1202 Views
Last post November 24, 2016, 1324 UTC
by aurora
0 Replies
300 Views
Last post May 13, 2023, 1414 UTC
by ChrisSmolinski
2 Replies
803 Views
Last post October 12, 2013, 2027 UTC
by rdla4
9 Replies
1485 Views
Last post January 08, 2022, 2051 UTC
by NovaDoge
0 Replies
406 Views
Last post June 25, 2020, 1309 UTC
by ChrisSmolinski
4 Replies
1250 Views
Last post October 29, 2015, 2210 UTC
by ByteBORG
0 Replies
1182 Views
Last post October 04, 2009, 0045 UTC
by ChrisSmolinski
0 Replies
515 Views
Last post March 02, 2018, 2219 UTC
by ChrisSmolinski
5 Replies
1227 Views
Last post October 17, 2016, 2224 UTC
by Skipmuck
0 Replies
363 Views
Last post August 19, 2024, 1427 UTC
by ChrisSmolinski
0 Replies
716 Views
Last post June 19, 2017, 2030 UTC
by ChrisSmolinski
4 Replies
1699 Views
Last post May 09, 2015, 0010 UTC
by KMD3HR
7 Replies
1260 Views
Last post October 23, 2020, 2320 UTC
by Quantum Radio
1 Replies
772 Views
Last post June 12, 2018, 2126 UTC
by TheRelayStation
5 Replies
1374 Views
Last post September 10, 2013, 0031 UTC
by Mentholyptus
13 Replies
4065 Views
Last post May 22, 2014, 1055 UTC
by Andrew Yoder
5 Replies
1998 Views
Last post June 10, 2025, 1957 UTC
by Radio Star
15 Replies
1322 Views
Last post November 19, 2024, 2241 UTC
by JustGreg
0 Replies
298 Views
Last post July 25, 2023, 1703 UTC
by ChrisSmolinski
1 Replies
851 Views
Last post December 04, 2013, 1336 UTC
by hsmith77

 

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