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
3 Replies
1561 Views
Last post March 30, 2020, 2143 UTC
by Azimuth Coordinator
3 Replies
1493 Views
Last post August 31, 2020, 0223 UTC
by Rurik
6779.9 ticks

Started by Matambale

3 Replies
2659 Views
Last post January 31, 2022, 0938 UTC
by UtilitySeattle
3 Replies
1767 Views
Last post March 29, 2014, 2224 UTC
by DX_Pathfinder
3 Replies
2086 Views
Last post March 23, 2014, 0000 UTC
by rdla4
3 Replies
2413 Views
Last post October 24, 2015, 1319 UTC
by Oliver
3 Replies
2827 Views
Last post April 18, 2013, 1943 UTC
by Pigmeat
Some unknown signals

Started by 07code04stalker1776

3 Replies
2919 Views
Last post April 03, 2013, 1813 UTC
by Token
3 Replies
1908 Views
Last post July 31, 2015, 0103 UTC
by ChrisSmolinski
3 Replies
2930 Views
Last post August 17, 2015, 1455 UTC
by ChrisSmolinski
3 Replies
2079 Views
Last post September 26, 2018, 1548 UTC
by shadypyro
3 Replies
2749 Views
Last post March 22, 2013, 1746 UTC
by Token
3 Replies
2247 Views
Last post September 16, 2018, 1208 UTC
by ChrisSmolinski
3 Replies
1760 Views
Last post October 29, 2018, 0809 UTC
by bumbelstock
3 Replies
1738 Views
Last post January 26, 2014, 2246 UTC
by jFarley
3 Replies
1923 Views
Last post January 14, 2014, 0136 UTC
by BoomboxDX
3 Replies
2015 Views
Last post September 14, 2018, 0626 UTC
by Matt_B
3 Replies
2278 Views
Last post July 30, 2017, 1316 UTC
by Token
3 Replies
2620 Views
Last post February 02, 2018, 0838 UTC
by BoomboxDX
3 Replies
2508 Views
Last post April 01, 2014, 1933 UTC
by glimmer twin

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns