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
823 Views
Last post July 09, 2017, 1535 UTC
by ChrisSmolinski
1 Replies
981 Views
Last post December 31, 2014, 1701 UTC
by ByteBORG
4 Replies
1512 Views
Last post January 30, 2016, 1802 UTC
by flexoman61
0 Replies
325 Views
Last post December 17, 2023, 1420 UTC
by ChrisSmolinski
2 Replies
1473 Views
Last post September 17, 2011, 2343 UTC
by Sealord
6 Replies
1272 Views
Last post December 23, 2021, 2224 UTC
by Ron Hunsicker
3 Replies
1276 Views
Last post February 23, 2017, 2339 UTC
by PirateSWL
6 Replies
1627 Views
Last post December 05, 2024, 1839 UTC
by Andrew Yoder
0 Replies
511 Views
Last post June 13, 2020, 1251 UTC
by ChrisSmolinski
0 Replies
753 Views
Last post October 16, 2017, 2239 UTC
by ChrisSmolinski
13 Replies
2803 Views
Last post October 12, 2015, 0206 UTC
by Mentholyptus
0 Replies
795 Views
Last post December 24, 2012, 1706 UTC
by ChrisSmolinski
16 Replies
4510 Views
Last post April 06, 2013, 0113 UTC
by Dr. Amp
7 Replies
339 Views
Last post September 14, 2025, 2225 UTC
by Doc Roe
4 Replies
2501 Views
Last post December 26, 2013, 2016 UTC
by Mentholyptus
7 Replies
1775 Views
Last post January 13, 2020, 0004 UTC
by Pigmeat
2 Replies
1513 Views
Last post December 09, 2009, 1348 UTC
by Zoidberg
1 Replies
972 Views
Last post May 01, 2014, 1916 UTC
by jFarley
1 Replies
1410 Views
Last post April 18, 2015, 1644 UTC
by ByteBORG
0 Replies
567 Views
Last post June 01, 2018, 1056 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