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
3751 Views
Last post August 12, 2015, 1345 UTC
by redhat
3 Replies
7069 Views
Last post July 26, 2015, 0613 UTC
by BoomboxDX
RF Components

Started by Oliver

3 Replies
4335 Views
Last post March 27, 2015, 1831 UTC
by redhat
Realistic (Radioshack) DX-394

Started by Matt285

3 Replies
3088 Views
Last post December 29, 2019, 1357 UTC
by BoomboxDX
3 Replies
2271 Views
Last post August 26, 2019, 1643 UTC
by SorensenDK
Antenna Identification

Started by WrongwayCorrigan

3 Replies
4075 Views
Last post June 06, 2011, 0335 UTC
by cmradio
R390A

Started by Gino Italy

2 Replies
1653 Views
Last post April 26, 2019, 1809 UTC
by Radio Station
2 Replies
4297 Views
Last post May 02, 2017, 1710 UTC
by RST111
2 Replies
2838 Views
Last post July 09, 2018, 1231 UTC
by Josh
2 Replies
2944 Views
Last post December 21, 2024, 0249 UTC
by boston_strangler
2 Replies
1467 Views
Last post March 10, 2021, 0047 UTC
by KidForToday
2 Replies
2122 Views
Last post December 30, 2016, 1558 UTC
by fpeconsultant
2 Replies
2123 Views
Last post December 20, 2016, 0923 UTC
by R319
2 Replies
2371 Views
Last post March 29, 2018, 2013 UTC
by RobRich
2 Replies
2949 Views
Last post November 19, 2016, 2158 UTC
by VK3BVW
2 Replies
4070 Views
Last post September 12, 2016, 1720 UTC
by MDK2
2 Replies
2124 Views
Last post July 31, 2019, 0122 UTC
by WWBR
2 Replies
1432 Views
Last post November 17, 2023, 2229 UTC
by europirate
2 Replies
2473 Views
Last post September 01, 2016, 1702 UTC
by EliteData
2 Replies
2227 Views
Last post August 03, 2018, 2010 UTC
by Pigmeat

 

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