Many thanks to SWLing Post contributor, Jesse (W9JES) who writes:
I’ve been busy enhancing my Radio Shack DX-390. I added an IF-Out jack for my SDR, changed out the light for a LED, added a latch circuit for the light switch, added static protection, and disabled auto-mute. My blog with full instructions is at www.w9jes.com
Thank you, Jesse! Here are links to the various modifications Jesse has documented:
Hi Jesse,
Picked up a 390 on QRZ.com recently and found your web site.
Really nice!!
Can a backlight LED, like you show, be wired to be “on” all the time??
Thanks, Ken in NJ
I have one of these radios I bought new back in the 90’s
I did an “anti-chuffing” mod about 5 mins after I bought it that drove me mad.
I Still have it here , I should fire it up & see if it still work 😉