[Drakelist] AC-4R Rebuild Success

After sitting in my project queue for a couple of years I finally got around to rebuilding my original 1969 vintage AC-4 using Mike Bryce's kit. I had stuffed the PCB a year or so ago but as the C-line was working ok there was no hurry. Only problem with the install were the PCB standoffs

Re: [Drakelist] AC-4R Rebuild Success

Hi Dino, Congrats on the AC-4R project. Call me paranoid, but this rebuild is the first thing I do when I get a new AC-4. I also upgrade the old two-wire power cord with a three-wire grounded cord for a little more peace of mind. I did the L-4PS upgrade several months ago using Mike Bryce's

[Drakelist] Hi!

Hi 2 all! Good subscrubtion, thx! http://stydentkam.ru , http://ekzameny.net , http://referat-na-5.ru , http://hellocafe.ru , http://home-happy.ru , http://samkon.ru , http://scouts-russia.ru , http://bestxenon.ru , http://harmonia-plus.ru ,

Re: [Drakelist] Receiver dead on TR-7

OK, discovered why there is audio only on the 2.5 and 5 MHz bands: These bands disable transmit...so the transmit-when-on problem is still there. It looks like there is a comparator on the MC3302P IC that is outputting high even though its two inputs are relatively equal (U301D, inputs of 9.6V