[Hallicrafters] SX-88 part location?

[WA1KBQ at aol.com]

Roger,
 
Sounds like you might have an early one. I think there was a bulletin  
issued that changed R-83 to 15K and corrected a mistake in the  schematic 
concerning how the RF gain control is connected. The RF gain control  is a 10K 
reverse log taper made by CTS I think. Reverse taper controls with a  2.250" 
shaft are hard to find. You might get by with a linear control but the  
control function will be bunched toward one end of the rotation. I am not  close 
to the info at the moment but I will look it up and send further details. 
 
Regards, Greg
 
 
In a message dated 11/8/2010 3:38:21 P.M. Eastern Standard Time,  
nj2r at verizon.net writes:

I'm  working on a SX-88 that has a defective RF gain control. Someone
previously  "modified" the pot toasting it and in the process removed R-83, 
a
330K 1/2  watt resistor. The picture in the instruction manual does not show
where  this was mounted nor can I find where the ground end may have  been
connected.

I can of course provide a ground point but it would  be nice to know where 
it
was originally connected.

A second question  is that the instruction manual parts list does not 
specify
if the RF gain  pot is a linear or audio taper pot. It doesn't specify for
any pot  including the volume control what taper if any is intended.

Thanks for  any advice.

73, Roger,  NJ2R

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