[Elecraft] K1 manual revisions

[Don Wilhelm]

Petr,

Check the VPOWER signal line to see if there is any DC level change.
If is is a steady DC level, then try changing QW5 and/or D18.

If VPOWER varies, then the MCU or DAC is causing the variation.  In that 
case, I would try a Master Reset (See manual Reset to Factory defaults), 
but first record your menu settings and restore them after the reset.

73,
Don W3FPR

On 5/13/2019 4:06 AM, Petr, OK1RP/M0SIS wrote:
> Hi Don,
> 
> many thanks for kind help and reply.
> Unfortunately I don't think its DAC sampling issue...
> 
> I checked it happends on any power level (not depending to the power level
> setting)
> and it happends in my case only on 40m (band 1).
> Also I realized that the power variation is sometime 0.5W and sometime 2W...
> and even
> more sometime its jumping up and sometime jumping down.
> What is most strange is that when I am not touching the band switching
> button it seems to
> be stable > even on lower power (instead of pre-set power) it does not
> changes.
> 
> I checked our second K1 which is for long time used by my daddy and I did
> not realized anything
> like that on this radio.
> 
> I will try to verify all parts around the Q5 as you suggested.
> I will be happy for any other kind of hint or tips...
> 
> 
> 
> 
> 
> -----
> 73 - Petr, OK1RP
> "Apple & Elecraft freak"
> B:http://ok1rp.blogspot.com
> MeWe: https://bit.ly/2HGPoDx
> MeWe: https://bit.ly/2FmwvDt
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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