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
1 Replies
676 Views
Last post February 20, 2019, 2243 UTC
by Ray Lalleu
9 Replies
5605 Views
Last post November 22, 2011, 0344 UTC
by UNID QRP
1 Replies
770 Views
Last post August 18, 2017, 2218 UTC
by Helicaster
1 Replies
946 Views
Last post September 29, 2012, 1940 UTC
by jFarley
3 Replies
1643 Views
Last post August 13, 2014, 2133 UTC
by ChrisSmolinski
1 Replies
629 Views
Last post November 27, 2017, 2258 UTC
by Davep
0 Replies
516 Views
Last post October 11, 2019, 1122 UTC
by ChrisSmolinski
3 Replies
1412 Views
Last post April 01, 2012, 1535 UTC
by zackers
0 Replies
633 Views
Last post November 14, 2015, 2024 UTC
by ChrisSmolinski
0 Replies
636 Views
Last post July 08, 2017, 1622 UTC
by ChrisSmolinski
0 Replies
310 Views
Last post April 05, 2025, 1332 UTC
by ChrisSmolinski
6 Replies
2168 Views
Last post January 27, 2016, 1700 UTC
by EliteData
3 Replies
1382 Views
Last post May 28, 2013, 2349 UTC
by DeltaCharlie
20 Replies
2142 Views
Last post September 09, 2024, 0321 UTC
by caodwolf
9 Replies
2085 Views
Last post October 03, 2013, 0105 UTC
by Sealord
0 Replies
850 Views
Last post May 24, 2019, 1500 UTC
by ChrisSmolinski
2 Replies
1054 Views
Last post February 22, 2017, 0132 UTC
by PirateSWL
4 Replies
1191 Views
Last post December 23, 2012, 1442 UTC
by jFarley
11 Replies
2370 Views
Last post May 04, 2016, 0355 UTC
by Pigmeat
2 Replies
803 Views
Last post September 03, 2019, 1800 UTC
by WWBR

 

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