Hi Don and Jim, Thanks for taking the time to respond.
The KPA100 will be internal and the KAT100 will be in an EC1. After re-reading the manuals for the KPA and KAT 100's, maybe this isn't so hard. I think that I can connect my secondary supply directly to the K2 and then power the KAT100 via a switch to select either the main or secondary supplies while main/secondary power to the K2 would be automatically switched from main to secondary if the Astron fails. Does this sound reasonable or am I missing something else? Thanks, Tom -----Original Message----- From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Saturday, April 21, 2007 8:05 AM To: KJ3D Cc: [email protected] Subject: Re: [Elecraft] KAT-100 TRUE to all your T/F questions. To answer the REAL question, yes the KPA100 will go into bypass if power is removed from it. The KAT100 does present a problem if it is powered from the same supply as the KPA100 and that supply fails or is switched off because the KAT100 does not use latching relays - with power off it will revert to all capacitors disconnected and all inductors bypassed and ANT 1 will be selected. In other words, the K2 output will be connected to whatever SWR your antenna presents without the tuner in-line. The KAT100 and base K2 SHOULD continue to work seamlessly at lower power if you power them both from the low current power supply, but I have not really tried that scenario. 73, Don W3FPR KJ3D wrote: > Good Morning Group, > > I'm beginning the KPA100 and KAT100 build this weekend and have some > questions. > > True or False: I must run two power lines from my Astron 35, one to > the KPA100 and another to the KAT100. > > True or False: I MAY connect a secondary power supply (turned off) to > the barrel connector on the K2 in case the Astron fails. > > True or False: If the Astron fails, the K2 will go into bypass mode > and continue to work at QRP levels if I then turn on the secondary power supply. > > REAL QUESTION: If the K2 is running in the bypass mode, will the > KAT100 then take power from the secondary power supply? > > > _______________________________________________ > 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
