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
7 Replies
6259 Views
Last post January 08, 2022, 2144 UTC
by JustGreg
3 Replies
2769 Views
Last post January 13, 2021, 1930 UTC
by ChrisSmolinski
2 Replies
4023 Views
Last post December 31, 2018, 1734 UTC
by Strange Beacons
8 Replies
5273 Views
Last post January 15, 2019, 1111 UTC
by ChrisSmolinski
0 Replies
3533 Views
Last post June 21, 2017, 0010 UTC
by skeezix
3 Replies
3807 Views
Last post August 01, 2016, 0909 UTC
by redhat
14 Replies
10178 Views
Last post November 23, 2016, 2247 UTC
by skeezix
3 Replies
2068 Views
Last post April 13, 2020, 1719 UTC
by sdruzer
0 Replies
2839 Views
Last post January 19, 2015, 1719 UTC
by S. McArdle
SDR-IQ Alternative?

Started by S. McArdle « 1 2 »

18 Replies
10292 Views
Last post April 06, 2014, 2208 UTC
by DoktorMHz
0 Replies
2104 Views
Last post September 16, 2019, 1708 UTC
by RST111
2 Replies
1592 Views
Last post February 20, 2023, 2010 UTC
by Josh
19 Replies
25045 Views
Last post May 09, 2025, 1107 UTC
by alpard
2 Replies
3737 Views
Last post December 08, 2024, 0017 UTC
by RobRich
0 Replies
2370 Views
Last post December 18, 2024, 1919 UTC
by RobRich
7 Replies
2887 Views
Last post March 16, 2024, 1935 UTC
by RobRich
2 Replies
3744 Views
Last post April 28, 2024, 0123 UTC
by RobRich
2 Replies
3279 Views
Last post May 15, 2024, 1516 UTC
by RobRich
0 Replies
2776 Views
Last post July 16, 2024, 0009 UTC
by RobRich
0 Replies
2200 Views
Last post August 06, 2024, 1951 UTC
by RobRich

 

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