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
11 Replies
1896 Views
Last post August 11, 2019, 1156 UTC
by ChrisSmolinski
11 Replies
1750 Views
Last post May 22, 2022, 1531 UTC
by Skipmuck
11 Replies
1098 Views
Last post March 20, 2023, 2032 UTC
by Pigmeat
11 Replies
1742 Views
Last post June 28, 2024, 2320 UTC
by N2MLP
11 Replies
2930 Views
Last post July 12, 2015, 1747 UTC
by ChrisSmolinski
11 Replies
2257 Views
Last post February 05, 2018, 2110 UTC
by Traveling Wave
11 Replies
1443 Views
Last post March 20, 2023, 2134 UTC
by Pigmeat
11 Replies
1360 Views
Last post June 03, 2024, 0220 UTC
by MrMomB
11 Replies
1453 Views
Last post May 08, 2022, 2049 UTC
by ChrisSmolinski
11 Replies
1302 Views
Last post March 21, 2023, 2012 UTC
by Shortwave_Listener
11 Replies
1767 Views
Last post February 03, 2018, 0014 UTC
by JohnS
11 Replies
3054 Views
Last post August 18, 2013, 2106 UTC
by ChrisSmolinski
11 Replies
2546 Views
Last post February 21, 2016, 2106 UTC
by ChrisSmolinski
11 Replies
1329 Views
Last post March 18, 2023, 2045 UTC
by N2MLP
11 Replies
1182 Views
Last post April 16, 2022, 0204 UTC
by William Hassig
11 Replies
3113 Views
Last post January 21, 2017, 0152 UTC
by Yankee Charlie
11 Replies
1531 Views
Last post April 18, 2022, 0026 UTC
by flexoman61
11 Replies
2209 Views
Last post April 14, 2022, 0058 UTC
by Charlie_Dont_Surf
11 Replies
2243 Views
Last post November 02, 2020, 0001 UTC
by ✠ Blue Max
11 Replies
1203 Views
Last post April 22, 2022, 2352 UTC
by Dr. Strangelove

 

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