[Elecraft] KPA-1500 input too high

[Don Wilhelm]

What are you using to drive the KPA1500?

Connect the driving transceiver to an external wattmeter, and then to a 
dummy load.  Do a KeyDown in CW mode and see what the actual power 
output is shown on the external wattmeter.

My thinking is that your driving transceiver has lost its ability to 
control the power output.  Do the test with an external wattmeter and a 
dummy load rather than depending on the power indications from either 
the KPA1500 or the driving transceiver.  In other words, check each 
piece of gear one piece at a time.

73,
Don W3FPR

On 4/27/2019 5:48 PM, rocketnj at gmail.com wrote:
> Hi All,
> 
>   
> 
> KPA-1500 s/n 423
> 
>   
> 
> Operating 80 meter SSB running 20 watts drive with tuner engaged for about
> 1240 watts out PEP. Remote app shows maximum power handling of 1620 watts.
> 
> Out of nowhere I got an input power too high alarm @ 191 watts! The radio is
> capable of 100 watts out max and verified is set to 20 watts.
> 
>   
> 
> Set tune power to 10 watts.
> 
> Meter in amp during standby reads 10 watts.
> 
> Switch to operate and immediately get input power too high alarm @ 91 watts.
> 
>   
> 
> Switch to 20 meters (resonant antenna). No issue - 10 watts tune is
> approximately 400 watts out with no error.
> 
>   
> 
> Any ideas?
> 
>   
> 
> Dave wo2x
> 
>   
> 
>   
> 
>   
> 
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