[Elecraft] KAT100 IN EC2 ENCLOSURE

[Don Wilhelm]

Jerry,

There is no one transistor that will cause that behavior.

First put an in-line wattmeter and a dummy load on the KAT100 ANT1 
connector, set the power to 50 watts and then enter TUNE.
1) does the tuner tune so no LEDs are lit on the KAT100?  If no, how 
many are lit?
2) what is the power indicated on the wattmeter (it should be about 20 
watts)?

You may have "popped" one or more of the diodes in either the KPA100 or 
the KAT100 wattmeter, but the answers to the above questions will 
indicate where to look next.

73,
Don W3FPR

On 1/2/2016 12:56 AM, Jerry Ford wrote:
>   Good evening all:
> I'm looking for some advise.   My KAT100 / KPA100  are in an EC2 enclosure next to my K2.
> I was changing bands this evening and neglected to changeantenna's when moving from 80 to 40 meters.
> I hit the   " TUNE "   on the K2  and my KAT100  triedto tune.  It ran through the scale a couple of times beforeI could shut it off.
> Now when I hit the "TUNE"  button,  the radio goes intotransmit,  but the tuner isn't tuning anything.   Normal operation the tuner would tune and go back to receive.
> It doesn't change back to receive unless I hit the tunebutton again.  SO,   the tuner quit.
> I remember reading about a transistor that fails and causes this issue but I don't remember which one it is.
> SO,   looking for some information.
>