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

David Woolley (E.L) forums at david-woolley.me.uk
Thu Jun 5 17:21:39 EDT 2008


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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