[Elecraft] Future of KPA500 & KAT500

[Mike Harris]

The mod applies to the ability to increase the sensitivity (gain) of the 
amp by bypassing the input attenuator so that it can be driven to a 
useful power output with a lower power exciter. There isn't any 
suggestion that the amp should be driven beyond its normal power level. 
Hence unless the exciter was dirty, clean signals is not part of the 
equation.

Regards,

Mike VP8NO


  18/06/2020 14:25, Phil Hystad via Elecraft wrote:
> Why would you modify your KPA500 and risk warranty, repair, and clean signals for a mere 1/2 S-Unit at best?
> 
> 
> 
>> On Jun 18, 2020, at 9:27 AM, Gmail - George <gdanner12 at gmail.com> wrote:
>>
>> Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500
>> watts by a KX3.
>> She published it - but I can not find it on the web.
>> The mod increased the gain by less than 3 db (seems I recall 2.something).
>> You would need the 12 to 15 watts to drive it to about 500 watts.