[Elecraft] KAT-100

[Don Wilhelm]

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?
> 
> 
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