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
8 Replies
1320 Views
Last post July 22, 2021, 2330 UTC
by Radio Star
2 Replies
1371 Views
Last post December 29, 2012, 2046 UTC
by ETM71
1 Replies
1017 Views
Last post April 01, 2020, 1308 UTC
by ChrisSmolinski
6 Replies
1295 Views
Last post January 16, 2022, 1446 UTC
by refmo
0 Replies
2755 Views
Last post February 20, 2013, 1528 UTC
by Andrew Yoder
1 Replies
1064 Views
Last post January 19, 2013, 1748 UTC
by rdla4
0 Replies
545 Views
Last post April 09, 2022, 1249 UTC
by Andrew Yoder
1 Replies
714 Views
Last post December 26, 2021, 0349 UTC
by Bali_Frank
10 Replies
2805 Views
Last post January 02, 2013, 1402 UTC
by Sealord
2 Replies
1984 Views
Last post July 12, 2015, 1008 UTC
by stationqrp
10 Replies
2300 Views
Last post December 01, 2020, 2249 UTC
by ION Radio
0 Replies
1553 Views
Last post March 24, 2012, 2323 UTC
by Andrew Yoder
10 Replies
3268 Views
Last post February 12, 2012, 0104 UTC
by Porter
1 Replies
1783 Views
Last post March 16, 2011, 0320 UTC
by Zoidberg
0 Replies
479 Views
Last post April 13, 2023, 0356 UTC
by Andrew Yoder
6 Replies
1261 Views
Last post October 31, 2020, 2336 UTC
by Arnold Layne
2 Replies
1784 Views
Last post March 24, 2012, 2336 UTC
by zackers
2 Replies
710 Views
Last post July 17, 2021, 1844 UTC
by Chuck54
2 Replies
1325 Views
Last post February 06, 2016, 1757 UTC
by JoeFLIPS
8 Replies
3625 Views
Last post July 10, 2014, 2323 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