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
696 Views
Last post December 05, 2015, 1846 UTC
by ChrisSmolinski
11 Replies
2667 Views
Last post April 21, 2018, 2022 UTC
by Ron Hunsicker
11 Replies
1529 Views
Last post February 25, 2023, 1646 UTC
by Pigmeat
6 Replies
2149 Views
Last post February 07, 2015, 2347 UTC
by blw
13 Replies
2224 Views
Last post November 18, 2019, 1607 UTC
by CoolAM Radio
0 Replies
760 Views
Last post October 04, 2014, 2333 UTC
by ChrisSmolinski
4 Replies
1300 Views
Last post April 24, 2017, 2217 UTC
by James Brownyard
0 Replies
468 Views
Last post July 24, 2019, 1119 UTC
by ChrisSmolinski
25 Replies
2907 Views
Last post February 25, 2022, 0056 UTC
by KMD3HR
1 Replies
1349 Views
Last post August 26, 2015, 1834 UTC
by Pigmeat
0 Replies
916 Views
Last post December 23, 2011, 1339 UTC
by ChrisSmolinski
0 Replies
739 Views
Last post August 21, 2013, 1350 UTC
by ChrisSmolinski
0 Replies
570 Views
Last post May 26, 2018, 1650 UTC
by ChrisSmolinski
7 Replies
2390 Views
Last post May 25, 2025, 1426 UTC
by Professor
2 Replies
1218 Views
Last post September 04, 2017, 2243 UTC
by Helicaster
12 Replies
3569 Views
Last post April 20, 2014, 0106 UTC
by oly1959
2 Replies
1029 Views
Last post March 24, 2019, 1606 UTC
by Radio Star
8 Replies
1928 Views
Last post December 28, 2015, 2115 UTC
by R4002
3 Replies
1499 Views
Last post June 17, 2012, 1527 UTC
by ChrisSmolinski
0 Replies
640 Views
Last post May 28, 2017, 1848 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 Garden Flag
by MitchellTimeDesigns