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 permissable in your locale.

Subject / Started by Last post
9 Replies
2691 Views
Last post October 21, 2019, 1509 UTC
by MDK2
0 Replies
2689 Views
Last post December 01, 2008, 1634 UTC
by Zoidberg
3 Replies
2677 Views
Last post January 21, 2021, 1841 UTC
by Retops
0 Replies
2673 Views
Last post August 02, 2015, 1635 UTC
by flexoman61
VC05

Started by MaryJohnson

4 Replies
2673 Views
Last post August 22, 2019, 1726 UTC
by Josh
0 Replies
2661 Views
Last post May 08, 2008, 2244 UTC
by mapleleaf
5 Replies
2661 Views
Last post December 10, 2013, 0028 UTC
by Token
3 Replies
2631 Views
Last post March 31, 2017, 1603 UTC
by MDK2
Rivet vs. RadioCom 6

Started by vhavrilko

3 Replies
2630 Views
Last post April 06, 2013, 0549 UTC
by vhavrilko
2 Replies
2628 Views
Last post October 31, 2017, 1613 UTC
by MDK2
Logs

Started by Ary-B

0 Replies
2628 Views
Last post July 21, 2012, 1508 UTC
by Ary-B
4 Replies
2616 Views
Last post March 02, 2016, 2230 UTC
by hec60504
1 Replies
2611 Views
Last post June 15, 2014, 0330 UTC
by sat_dxer
11 Replies
2603 Views
Last post February 27, 2019, 0555 UTC
by kalvados
1 Replies
2602 Views
Last post February 17, 2021, 1051 UTC
by ~SIGINT~
18 Replies
2591 Views
Last post February 07, 2023, 1548 UTC
by orourkeda
0 Replies
2563 Views
Last post May 08, 2017, 2014 UTC
by Strange Beacons
4 Replies
2561 Views
Last post June 06, 2013, 0816 UTC
by BoomboxDX
1 Replies
2560 Views
Last post January 06, 2013, 1413 UTC
by sat_dxer
6 Replies
2554 Views
Last post June 30, 2013, 1549 UTC
by Token

 

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