[Elecraft] mods to K2

[tnnyswy at yahoo.com]

It seems that a K2 is not the Radio for you and your intended purpose. 

((((73)))) Milverton.





>________________________________
> From: Allan Taylor <k7gt.cw at gmail.com>
>To: Elecraft <elecraft at mailman.qth.net> 
>Sent: Friday, September 27, 2013 8:35 AM
>Subject: [Elecraft] mods to K2
> 
>
>I unask the first question (how to raise K2 output power). But in
>self-defense,
>I knew that:
>       PAs have better distortion properties with higher supply voltages
>       14->20W is about 1 dB but 10->20W is 3.01 dB (3 dB MATTERS!)
>        operating above 10W on ssb with the K2 was not a good idea as
>designed
>               and I would only do so in a true emergency
>        the PA devices would need to be replaced
>        the PA output network would need to be redesigned completely
>        the driver stage would need to at least have a huskier device
>        the existing K2 PA heatsink method may be marginal already
>        I would be barraged by nay-sayers
>
>but I did not know that the MCU was so tightly involved in power level
>control.
>
>Purchasing the new 100W amp from Elecraft wouldn't meet my needs for at
>least
>three reasons:
>           for the same $$$ I could get a used Herc II !!
>           fails the one box test
>           would be much less efficient at 20W than a solution designed for
>20W
>
>I am still looking for a known solution to the relatively low RX audio
>issue.
>While buying the K2 audio filter module would work, it is an expensive
>option.
>(Does anyone have a used KAF2 laying around?)
>
>Now as a well-known QRPer (KU7Y) often says
>
>    "now back into my hole"
>
>-- 
>73     Allan    K7GT
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