John,

I would suggest that you put a diode in series with that supply - rated at 5 amps. That will reduce the voltage by the amount of the diode drop. Running the KX3 (or any other device) above the specified maximum voltage is done at your own peril - it may work, but it taxes the regulators and other devices.

73,
Don W3FPR

On 1/18/2016 3:43 PM, John Kramer wrote:
Someone on this reflector suggested a power supply off eBay, that could be used
with the KX3 about 2 months ago. It is intended for Toshiba laptops. So I 
bought one,
this is the one…

http://www.ebay.com/itm/15V-5A-AC-Adapter-Charger-Power-Supply-For-Toshiba-Tecra-A6-A7-A8-A9-A10-Laptop-/381356162365?hash=item58ca993d3d:g:Yk0AAOSwMmBVxX22
 
<http://www.ebay.com/itm/15V-5A-AC-Adapter-Charger-Power-Supply-For-Toshiba-Tecra-A6-A7-A8-A9-A10-Laptop-/381356162365?hash=item58ca993d3d:g:Yk0AAOSwMmBVxX22>

It terminates in the right plug for the KX3 and is rated at 15 volts at max 5 
amps, and only sells
for $ 7.79 including free shipping from Hong Kong.
Anyway, it is cheap as chips so I bought one, and it arrived today. I hooked up 
to a volt meter
and see it is 15.4 volts. I know it is better for TX IMD to have higher voltage 
supplied to the
KX3 rather than a voltage too low, but I am concerned that 15.4 volts may be 
too much
for the KX3. I see in the KX3 manual specs, that recommended supply voltage is 
8 - 15 volts.
I would hate to hurt my KX3 with over voltage……anyone know if there would be 
any short
or long term problems with running 15.4 volts to the KX3 ? It is just slightly 
above the
maximum recommended supply voltage

73
John, ZS5J.
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