[Elecraft] Latest MCU and DSP

[riese-k3djc at juno.com]

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 <k2av.guy at gmail.com>
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