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
12 Replies
3410 Views
Last post July 19, 2020, 1856 UTC
by Chuck54
15 Replies
3411 Views
Last post March 27, 2025, 0106 UTC
by Quasar
KIPM 6925u

Started by Fansome

0 Replies
3413 Views
Last post November 21, 2009, 0508 UTC
by Fansome
13 Replies
3413 Views
Last post July 07, 2014, 1810 UTC
by ChrisSmolinski
14 Replies
3414 Views
Last post May 29, 2015, 0127 UTC
by rundangerously
10 Replies
3414 Views
Last post January 13, 2014, 0218 UTC
by caodwolf
15 Replies
3415 Views
Last post September 30, 2018, 0431 UTC
by Sealord
25 Replies
3415 Views
Last post November 01, 2020, 1310 UTC
by skyman
12 Replies
3417 Views
Last post December 25, 2014, 1600 UTC
by ChrisSmolinski
32 Replies
3417 Views
Last post April 01, 2024, 0230 UTC
by Jim Renfrew
5 Replies
3417 Views
Last post June 12, 2017, 2201 UTC
by slowtrain
1 Replies
3417 Views
Last post April 01, 2012, 2201 UTC
by MrHellion
10 Replies
3417 Views
Last post October 15, 2014, 2138 UTC
by ByteBORG
12 Replies
3418 Views
Last post February 03, 2018, 1930 UTC
by WA4FHY
9 Replies
3418 Views
Last post August 12, 2017, 0412 UTC
by myteaquinn
0 Replies
3418 Views
Last post March 11, 2014, 1147 UTC
by ChrisSmolinski
0 Replies
3418 Views
Last post March 12, 2014, 1306 UTC
by ChrisSmolinski
10 Replies
3418 Views
Last post January 01, 2017, 0044 UTC
by oly1959
22 Replies
3419 Views
Last post June 12, 2021, 0238 UTC
by LRFox
11 Replies
3419 Views
Last post October 22, 2017, 2255 UTC
by Slow-pC

 

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