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
2208 Views
Last post November 08, 2015, 1551 UTC
by Token
0 Replies
7929 Views
Last post August 29, 2015, 1439 UTC
by Token
0 Replies
1393 Views
Last post July 02, 2018, 0022 UTC
by Token
0 Replies
2740 Views
Last post March 01, 2015, 1757 UTC
by Token
0 Replies
1289 Views
Last post May 02, 2018, 1207 UTC
by Token
0 Replies
2528 Views
Last post February 27, 2015, 0126 UTC
by Token
0 Replies
1599 Views
Last post September 15, 2017, 0220 UTC
by Matt_B
0 Replies
2831 Views
Last post January 07, 2019, 2049 UTC
by wwwpena
0 Replies
1504 Views
Last post July 03, 2018, 0547 UTC
by PresentedIn4D
0 Replies
1703 Views
Last post August 11, 2017, 1705 UTC
by ulx2
0 Replies
1264 Views
Last post July 17, 2018, 0224 UTC
by Token
0 Replies
4428 Views
Last post May 12, 2016, 1549 UTC
by flexoman61
0 Replies
4525 Views
Last post August 14, 2015, 1546 UTC
by Token
0 Replies
1573 Views
Last post February 01, 2017, 2248 UTC
by RadRoadrunner
MOVED: ON8A

Started by Token

0 Replies
1450 Views
Last post January 27, 2017, 2208 UTC
by Token
0 Replies
94 Views
Last post April 18, 2024, 2102 UTC
by radio_FSK
0 Replies
3895 Views
Last post May 15, 2015, 0417 UTC
by Token
0 Replies
1491 Views
Last post December 11, 2016, 1447 UTC
by Token
0 Replies
1187 Views
Last post April 01, 2018, 2250 UTC
by Asuyuka
0 Replies
1403 Views
Last post October 26, 2018, 0521 UTC
by bumbelstock

 

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