Chuck, you are quite right about #1. It should say KAT500. We'll fix that. (Sometimes I slip and fall into the alphabet soup.)
The amp is in standby when the KAT500 does a TUNE operation for any reason. That's what the KEY line does to automate the power control. It disables the amp while the SWR is high for any reason. So all the KAT500 will see during the TUNE operation is whatever power you are driving the amplifier with - certainly less than 50 watts. If you are running your rig barefoot without the amp, you can run it at 100 watts during a TUNE operation without trouble. 73, Ron AC7AC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of W5UXH Sent: Thursday, September 19, 2013 10:25 AM To: elecraft@mailman.qth.net Subject: [Elecraft] [KAT500] Tune operation question Apparently my subscription to the mailman list got lost, so this is a second attempt to get this query out there: First, the Rev C. manual says the following: /The Elecraft KPA500 is designed to have its key line switched to disable or enable the amplifier even while it is producing full RF power, but many other amplifiers may be damaged doing that. To protect those amplifiers, the *KPA500* is supplied configured so that the key line will not be switched if more than 29 watts of RF power is present./ I am guessing this paragraph should say "the *KAT500* is supplied configured....."? I am getting close to ordering the KPA500 and KAT500 to go with my K3/100 and the tuning process is not clear in my old brain yet. The manual states: /A tune operation begins when RF power between 10 and 100 watts is applied and the SWR is above the tuning threshold in AUTO mode, or when the TUNE switch is tapped in either AUTO or MAN modes./ I am not able to fully grasp how this all works. Part of my confusion is the upper limit of 100 watts. Typically I will run the amp at more than 100 watts driving into the tuner. What am I missing? I hope tuning is automated such that all I have to do is key down shortly (a dash at 30 wpm I think I read somewhere) and the tuner will kick the amp offline if retuning is needed, do the tuning, and kick the amp back online. Any comments will be appreciated. Chuck, W5UXH -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT500-Tune-operation-question-tp757906 1.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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 ______________________________________________________________ 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
