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
1493 Views
Last post December 23, 2012, 1612 UTC
by jFarley
1 Replies
2062 Views
Last post June 08, 2012, 1054 UTC
by Sealord
1 Replies
1550 Views
Last post April 15, 2013, 0105 UTC
by RCCI
2 Replies
1979 Views
Last post June 18, 2013, 2352 UTC
by jFarley
0 Replies
1662 Views
Last post October 13, 2012, 1727 UTC
by jFarley
2 Replies
2054 Views
Last post October 08, 2012, 2103 UTC
by Sealord
2 Replies
1867 Views
Last post March 31, 2013, 1333 UTC
by Zane
0 Replies
3117 Views
Last post March 20, 2012, 1615 UTC
by DimBulb
0 Replies
1528 Views
Last post February 23, 2013, 2341 UTC
by Rockpicker
0 Replies
947 Views
Last post October 05, 2015, 0003 UTC
by jFarley
0 Replies
4187 Views
Last post January 13, 2013, 1528 UTC
by Zane
4 Replies
821 Views
Last post December 16, 2023, 2214 UTC
by ChrisSmolinski
0 Replies
617 Views
Last post March 10, 2020, 1322 UTC
by Claudio Italy
0 Replies
836 Views
Last post November 30, 2017, 2142 UTC
by ChrisSmolinski
0 Replies
790 Views
Last post October 25, 2017, 1059 UTC
by ChrisSmolinski
0 Replies
1056 Views
Last post February 22, 2016, 1142 UTC
by Daniel Wyllyans
3 Replies
919 Views
Last post February 27, 2025, 2350 UTC
by Radio Star
0 Replies
744 Views
Last post February 21, 2016, 1817 UTC
by Claudio Italy
2 Replies
419 Views
Last post August 04, 2025, 0108 UTC
by hsmith77
0 Replies
89 Views
Last post October 23, 2025, 1336 UTC
by Teotwaki

 

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