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
2439 Views
Last post March 31, 2019, 1214 UTC
by CoolAM Radio
15 Replies
7937 Views
Last post September 12, 2016, 1626 UTC
by Antennae
50 Replies
27290 Views
Last post January 28, 2013, 0300 UTC
by kmorgan
10 Replies
5645 Views
Last post October 23, 2013, 1428 UTC
by K5KNT
0 Replies
1228 Views
Last post August 26, 2023, 1414 UTC
by Paul Turkk
9 Replies
2461 Views
Last post September 01, 2025, 1651 UTC
by Shortwave_Listener
1 Replies
5607 Views
Last post June 19, 2011, 0902 UTC
by cmradio
HF in the car?

Started by Kilokat7 « 1 2 »

29 Replies
19412 Views
Last post March 14, 2014, 0116 UTC
by skeezix
6 Replies
14839 Views
Last post June 07, 2014, 1709 UTC
by Antennae
5 Replies
5252 Views
Last post June 07, 2015, 1736 UTC
by Zoidberg
5 Replies
2091 Views
Last post February 05, 2022, 2345 UTC
by ~SIGINT~
8 Replies
4630 Views
Last post December 31, 2016, 1509 UTC
by MDK2
High inverted V or low loop for SWL

Started by bandarr3000

13 Replies
6065 Views
Last post October 30, 2018, 1949 UTC
by Josh
4 Replies
5049 Views
Last post January 24, 2016, 0005 UTC
by syfr
5 Replies
2771 Views
Last post July 15, 2020, 0618 UTC
by Stretchyman
5 Replies
8748 Views
Last post March 24, 2015, 1019 UTC
by IZ5PQT
2 Replies
2998 Views
Last post August 22, 2017, 2243 UTC
by VK3BVW
11 Replies
3996 Views
Last post August 21, 2018, 1607 UTC
by ThaDood
31 Replies
19568 Views
Last post September 08, 2012, 0919 UTC
by Zoidberg
14 Replies
11438 Views
Last post September 29, 2011, 2337 UTC
by Dxer92

 

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