[Elecraft] K2 - signal loss in band-pass filter

[TF3KX]

Well, I agree that the basic receiving performance of the rig may not be
significantly affected, or even noticed at all.

But in my case I am not able to set the range of the S-meter properly, which
I attribute to the low 8V level.  My S-meter can not be adjusted to turn all
LEDs off when no signal is present, and I do not get the S-meter quite up to
full scale when the RF gain is turned fully CCW.

If I am correct, this is due to the low 8V and that would be an incentive to
get that voltage fixed.

73 - Kristinn, TF3KX


David Woolley (E.L) wrote:
> 
> Are LB3SA wrote:
>> 
>> But if you have a hard time getting the ALC voltage up to 3.8 volt
>> according
> 
> This voltage is related to AGC, not ALC.
> 
>> to the manual you can solder a 10K resistor across RP6 pins 3-4 on the
> 
> My impression is that people worry too much about this.  With all 
> components exactly on value this voltage is only achievable with R1 at 
> the end stop (I can't remember if it is just achievable or just not 
> achievable).  What really matters is whether or not you can get a 
> sensible AGC threshold within the control range of R1, which you can 
> only do once you have the whole receiver.
> 
>> control board (Gary from Elecraft suggested this for me). This works
>> great
>> and I now see 3.8V but it doesn't really make much of an audible
>> difference.
>> 
> 
> 
> -- 
> David Woolley
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