[Elecraft] Fw: Checking KPA relays

Don Wilhelm w3fpr at embarqmail.com
Sun Dec 20 21:37:42 EST 2009


Jerry,

No need to be embarrassed, all of us have had to write a "dear dummy" 
reminder note to ourselves at times.
I am glad to hear that all is now well.

73,
Don W3FPR

n0jrn wrote:
>   
>> Hi Tom:
>>
>> Astron VS-35m
>>
>> New supply even though I've had it in the closet for quite some time. 
>> Course,   I'll use my lack of use as my excuse for the mess I've been 
>> trying to figure out.     LOL
>>
>> Guess what Don ????
>>
>> You know this very nice power supply I've been using for testing my KPA100 
>> has a current adjustment on it.
>>
>> It works really good when you turn up the current control so it isn't 
>> limiting how much draw you put on it.
>>
>> I did all the tests I planned for this evening.  Everything came out 
>> within specs.   So,   while testing again I noted that when the amp 
>> dropped out of TX,    K1 or K2 would click and the word    "  ELECRAFT " 
>> came up in the display on the K2.     It struck me that meant I was 
>> loosing power to the K2.   It was actually shutting off and coming back on 
>> very quickly.
>>
>> I figured    "  what the heck "   so I hooked up both low current and high 
>> current supplies and retested.  Still dropping out of TX but the K2 no 
>> longer restarting.
>>
>> WOW,      had I left a bad solder joint on the power cord I made up or 
>> what ??????
>>
>> NOPE            but I had neglected to turn up the current control on the 
>> Astron so it was limiting my output by cutting off the current at around 
>> 12 amps.         LOL   LOL
>>
>> I can't believe I've been sitting here pulling my hair out over something 
>> so simple.
>>
>> I was just about to send this post to list when TOM ask what supply I was 
>> using and if it was metered.    Reached down and turned the current 
>> control up and got 107 watts out of the KPA100 like a champ.
>>
>> SO,      give me that cone shaped hat so I can put it back on and sit in 
>> the corner for awhile.........
>>
>> LOL
>>
>> Many thanks to the all who have offered assistance and to Don for his 
>> patience.    This problem has been solved.
>>
>> BACK TO THE KISS RULE
>>     
>


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