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
2 Replies
1767 Views
Last post December 11, 2017, 1849 UTC
by pinto vortando
0 Replies
1221 Views
Last post June 01, 2025, 1937 UTC
by Binjo
1 Replies
2819 Views
Last post November 05, 2015, 1936 UTC
by jFarley
0 Replies
2045 Views
Last post March 17, 2016, 0247 UTC
by Looking-Glass
12 Replies
10491 Views
Last post January 04, 2020, 0132 UTC
by pinto vortando
12 Replies
4124 Views
Last post October 16, 2019, 0122 UTC
by skeezix
Couple loggings above 500kc

Started by Capt. Radio

0 Replies
2436 Views
Last post November 24, 2013, 0416 UTC
by Capt. Radio
5 Replies
4005 Views
Last post November 25, 2013, 2202 UTC
by Capt. Radio
2 Replies
5118 Views
Last post August 31, 2015, 1524 UTC
by ChrisSmolinski
0 Replies
5941 Views
Last post June 07, 2015, 2138 UTC
by ChrisSmolinski
1 Replies
2217 Views
Last post December 27, 2017, 0122 UTC
by pinto vortando
0 Replies
1431 Views
Last post November 04, 2016, 2212 UTC
by ulx2
DCF77

Started by NJQA

0 Replies
1896 Views
Last post January 04, 2020, 0426 UTC
by NJQA
0 Replies
995 Views
Last post November 23, 2022, 0154 UTC
by skeezix
25 Replies
6647 Views
Last post December 17, 2017, 1730 UTC
by ChrisSmolinski
0 Replies
2218 Views
Last post May 06, 2018, 1856 UTC
by ulx2
DIW ?

Started by pinto vortando

6 Replies
3406 Views
Last post April 04, 2021, 2132 UTC
by pinto vortando
1 Replies
1707 Views
Last post November 09, 2020, 1119 UTC
by pinto vortando
4 Replies
3171 Views
Last post April 07, 2020, 0201 UTC
by sdruzer
5 Replies
5574 Views
Last post August 26, 2019, 1225 UTC
by ChrisSmolinski

 

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