the output relay is driven/switched by a transistor should be little current involved the heath keys off the final bias supply ?? 130 volts and a fair amount of current I would always use an interface between a modern rig and any older amp the ol heath amps are a fantastic deal with or without the harbach mods I just completed mine with an upgrade for the fan the soft start/key and power upgrades are well worth the price and the fun of installing Harbach makes a good product and support
Bob K3DJC dnt b On Tue, 04 Mar 2014 19:08:12 -0500 Don Wilhelm <[email protected]> writes: > Larry, > > Why not measure the current. Break the positive 12 volt Power > Supply > connection and insert your DMM set to measure current. Then short > the > keying input line on the relay box. You DMM will tell you how much > > current is being drawn. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
