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Old 08-15-2010, 12:34 AM
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wa2ise wa2ise is offline
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Join Date: Dec 2002
Location: USA
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Post Compiled a listing of Zenith vertical RC networks

Found a bunch of Sam's, and went thru them to see what I could find out on those 3 legged RC network modules they liked to use in the vertical circuits.

Zenith RC circuit network modules:


PHP Code:
Zenith part    RC discription
87
-4        68K0.0024uF distributed over the resistor body
87
-5        90K0.0024uF distributed over the resistor body
87
-1... R57-64K... C=.006-.0065
87
-10... R=70-83K... C=.0022

87
-8
               in
---+-68K--+--68K--+--out
                    
|      |       |
                  
680p    680p   680p
                    
|      |       |
                   
gnd----gnd-----gnd

87
-7            in--+-82K--+--82K--+--out
                    
|      |       |
                  
680p    680p   680p
                    
|      |       |
                   
gnd----gnd-----gnd

87
-4            in--+-33K--+--33K--+--out
                    
|      |       |
                  
680p    680p   680p
                    
|      |       |
                   
gnd----gnd-----gnd

87
-5            in--+-47K--+--47K--+--out
                    
|      |       |
                  
680p    680p   680p
                    
|      |       |
                   
gnd----gnd-----gnd 
Also found the Sam's for the RCA CTC4 color TV
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Last edited by wa2ise; 08-20-2010 at 06:40 PM. Reason: more info found in http://www.antiqueradios.com/forums/viewtopic.php?t=75548&
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