consider the Power supply as well,,,, old electrolytic caps will fail,,,, when I got mine from someone that didnt use it for some time the power supply came up but the B+ was jumping a bit I turned it off fast may as well do the fan too the old Heaths are good amps and not so damned heavy
Bob K3DJC On Sat, 7 Mar 2015 15:48:02 -0500 Guy Olinger K2AV <[email protected]> writes: > If you are seriously considering an SB200 that needs a keying > circuit, the > standard upgrade for any of the SB200/201/220/221 is the Harbach > "Softkey" > keying mod, which changes it from your keying +200 volts (compatible > with > nothing modern) to a tame low negative voltage low current key > voltage that > works with anything modern. > http://www.cis.rit.edu/people/faculty/montag/vandplite/pages/chap_9/ch9p1 .html ______________________________________________________________ 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 Message delivered to [email protected]
