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
1979 Views
Last post July 25, 2017, 1828 UTC
by R4002
0 Replies
1990 Views
Last post June 30, 2017, 1539 UTC
by R4002
1 Replies
1993 Views
Last post October 12, 2013, 2111 UTC
by thechoat
0 Replies
1994 Views
Last post November 04, 2015, 2055 UTC
by ka1iic
2 Replies
1996 Views
Last post October 19, 2013, 2233 UTC
by skeezix
0 Replies
2003 Views
Last post June 16, 2013, 1352 UTC
by thechoat
0 Replies
2005 Views
Last post March 13, 2025, 1418 UTC
by R4002
4 Replies
2007 Views
Last post December 17, 2019, 0059 UTC
by Matt285
0 Replies
2013 Views
Last post October 20, 2013, 1527 UTC
by atrainradio
1 Replies
2019 Views
Last post October 17, 2015, 2316 UTC
by refmo
1 Replies
2019 Views
Last post March 07, 2014, 2236 UTC
by ChrisSmolinski
2 Replies
2019 Views
Last post November 07, 2013, 0255 UTC
by Capt. Radio
4 Replies
2022 Views
Last post July 28, 2018, 1206 UTC
by Rob.
4 Replies
2023 Views
Last post May 30, 2018, 2326 UTC
by shadypyro
0 Replies
2025 Views
Last post February 14, 2016, 1955 UTC
by R4002
10m opening

Started by Cornel

0 Replies
2025 Views
Last post October 23, 2013, 0149 UTC
by Cornel
2 Replies
2026 Views
Last post September 07, 2018, 2110 UTC
by shadypyro
0 Replies
2028 Views
Last post July 07, 2014, 0347 UTC
by Rockpicker
1 Replies
2033 Views
Last post November 06, 2013, 0207 UTC
by thechoat
11M Band conditions

Started by Elf36

4 Replies
2036 Views
Last post December 05, 2021, 1947 UTC
by Elf36

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns