> I found out this week that K3 is good with Heathkit > SB-220 amps, all you need to do is connect a shielded > RCA cable between the units - how easy is that? !!!
Are you sure? Most of those amplifiers had high voltage PTT circuits. If I recall correctly the TR relay is a 120V 3PDT unit. You may need a buffer or soft-key circuit in your amplifier to make it safe with the K3. > If anyone knows where I can get a bandswitch wafer for > the input coil selection I may be able to use this amp > I bought. ;-) At one time Harbach Electronics www.harbachelectronics.com had replacement wafers for the Heath amps. Check with Jeff. He's also a good source of a "soft-key" circuit for the older amps. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Don Rasmussen > Sent: Sunday, August 31, 2008 1:19 AM > To: [email protected] > Subject: [Elecraft] SB-221 for K3 need some help. > > > Hi Guys, > > I found out this week that K3 is good with Heathkit > SB-220 amps, all you need to do is connect a shielded > RCA cable between the units - how easy is that? !!! > > I also found out that UPS had shattered the bandswitch > on the sb221 I recently received and Heathkit is no > longer around to get parts from. hi. > > If anyone knows where I can get a bandswitch wafer for > the input coil selection I may be able to use this amp > I bought. ;-) > > Thanks, > Don > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
