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
4 Replies
2014 Views
Last post March 29, 2012, 0144 UTC
by Newfoundland DXer
4 Replies
3285 Views
Last post March 26, 2012, 0249 UTC
by zackers
4 Replies
1378 Views
Last post August 17, 2018, 0649 UTC
by Pigmeat
4 Replies
2254 Views
Last post March 19, 2012, 2305 UTC
by zackers
4 Replies
1632 Views
Last post April 24, 2014, 1643 UTC
by ff
Entire GLONASS system fails

Started by Fansome

4 Replies
1293 Views
Last post April 10, 2014, 1426 UTC
by Fansome
Need advice

Started by myteaquinn

4 Replies
1589 Views
Last post April 05, 2014, 1954 UTC
by skeezix
4 Replies
1225 Views
Last post August 03, 2018, 2018 UTC
by Pigmeat
4 Replies
1752 Views
Last post March 07, 2022, 2103 UTC
by Charlie_Dont_Surf
4 Replies
1368 Views
Last post July 13, 2018, 1513 UTC
by Josh
4 Replies
5860 Views
Last post March 12, 2014, 2316 UTC
by paranoid dxer
4 Replies
2189 Views
Last post February 18, 2012, 0040 UTC
by Zoidberg
4 Replies
1227 Views
Last post December 30, 2021, 2316 UTC
by Erik Mattson
4 Replies
1403 Views
Last post February 04, 2022, 2333 UTC
by Ct Yankee
4 Replies
6383 Views
Last post February 16, 2012, 1327 UTC
by ChrisSmolinski
4 Replies
2247 Views
Last post February 04, 2012, 0719 UTC
by Zoidberg
4 Replies
1677 Views
Last post November 11, 2015, 0338 UTC
by Pigmeat
4 Replies
2091 Views
Last post February 22, 2014, 0052 UTC
by skeezix
4 Replies
1609 Views
Last post March 23, 2014, 1149 UTC
by Beerus Maximus
4 Replies
1423 Views
Last post October 21, 2015, 1556 UTC
by ByteBORG

 

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