All, Thanks for all the tips. I've installed the Harback mofd in the amp, including the softkey. Looks like from what you all say, I don't need to worry about the ALC.
Smoke test tomorrow. Tnx. 73, Ron, K5HM k5hm....@gmail.com www.qrz.com/db/k5hm -----Original Message----- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, April 20, 2013 4:33 PM To: K5HM Subject: Re: [Elecraft] K3 with Heathkit SB200 Ron, Unless the SB200 has been modified to use positive voltage for PTT, you will need some sort of interface (like a relay) in the PTT line. The SB200 uses slow open frame relays for T/R switching, so it is not suitable for QSK operation, so use PTT in the K3 to allow the realys time to switch - or get a QSK add-on mod for the amplifier. As for the ALC, the best recommendation is to not connect it. Adjust the output of the K3 to properly drive the SB200 and there is no need for ALC. 73, Don W3FPR On 4/20/2013 4:49 PM, K5HM wrote: > Have a newly refurb'ed SB200 that I want to run with my K3. But not sure how > to proceed. > > If anyone is running an SB200 with their K3, I would appreciate any tips, > especially about the ALC and PTT lines. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
