[Elecraft] K3 KPA3 bias adjust

[Bob McGraw K4TAX]

Correction on the RX USB mode current.   Should be 1.06 and NOT 1.6.  
.......... my oops.

73

Bob, K4TAX


On 3/7/2019 1:03 PM, Bob McGraw K4TAX wrote:
> I just looked at the current values of my K3s using the internal DISP 
> current and voltage values.
>
> This is how it came from the factory after replacement of the KPA3A 
> rev E amp on 5/30/2018.
>
>
> In RX USB mode = 1.6A       Vcc = 13.8V  Audio volume at minimum. 
> <<note correction above>>
>
> In TX USB mode no audio,   10 watt PWR setting = 1.60A Vcc = 13.7 V
>
> In TX USB mode no audio, 100 watt PWR setting = 2.91A Vcc = 13.6 V
>
> The PWR delta is 1.31 amps
>
>
> In RX CW mode,  = 1.03A   Vcc 13.8V   Audio volume at minimum.
>
> In TX CW mode PTT closed, key open, 10 watt PWR setting 1.54A Vcc 13.7V
>
> In TX XW mode, PTT closed, key open, 100 watt PWR setting 2.85A Vcc 13.6V
>
> The PWR delta is 1.31 amps
>
>
> Your values may be different if you have the 2nd receiver and may 
> slightly vary depending on your Vcc.
>
> 73
>
> Bob, K4TAX
>