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
3 Replies
5348 Views
Last post November 30, 2017, 0525 UTC
by Oliver
3 Replies
3498 Views
Last post August 01, 2016, 0909 UTC
by redhat
3 Replies
2903 Views
Last post June 14, 2016, 1236 UTC
by ChrisSmolinski
3 Replies
3625 Views
Last post May 17, 2019, 0314 UTC
by Todd Vanderbilt
3 Replies
1390 Views
Last post April 13, 2020, 1719 UTC
by sdruzer
3 Replies
3957 Views
Last post October 20, 2015, 2304 UTC
by XN
3 Replies
1625 Views
Last post January 10, 2019, 1948 UTC
by Josh
Birdies RX-888

Started by Triker

3 Replies
1484 Views
Last post June 14, 2021, 2307 UTC
by RobRich
3 Replies
2855 Views
Last post April 07, 2021, 2243 UTC
by CoolAM Radio
3 Replies
1788 Views
Last post March 16, 2022, 0005 UTC
by Josh
3 Replies
8319 Views
Last post July 21, 2014, 0007 UTC
by IQ_imbalance
3 Replies
6489 Views
Last post November 14, 2013, 2005 UTC
by K5KNT
3 Replies
7139 Views
Last post August 21, 2013, 2337 UTC
by skeezix
3 Replies
8143 Views
Last post August 29, 2013, 0955 UTC
by corq
3 Replies
1123 Views
Last post February 22, 2023, 1809 UTC
by Grinch
3 Replies
3817 Views
Last post May 13, 2013, 0410 UTC
by corq
3 Replies
3554 Views
Last post February 27, 2013, 1408 UTC
by ChrisSmolinski
New to SDR

Started by zackers

3 Replies
4131 Views
Last post February 05, 2013, 1316 UTC
by ChrisSmolinski
4 Replies
2616 Views
Last post April 07, 2018, 1833 UTC
by K5KNT
4 Replies
3397 Views
Last post March 27, 2018, 1648 UTC
by mbott

 

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