Seeking Info and Schematic Silvertone Neutrodyne

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Seeking Info and Schematic Silvertone Neutrodyne

Post by Wignaw on Sat Feb 04, 2017 5:28 pm

Hi

I am seeking Information and Schematic for a Sears Silvertone Neutrodyne TRF 8 Tube Table Top Radio
A key problem is that the similar radios show a 5 pin 227 for the 1st RF whereas my radio has a 4 pin Triode 226.

My Radio; plus similar Silvertone Radios

My Radio: 8 tubes; 1st RF 4 pin Socket; 4 Variable Capacitors; Push Pull Audio;
http://www.ebay.com/itm/1920-039-S-Silvertone-Neutrodyne-Radio-Receiver-/302155706109?_trksid=p2047675.l2557&ssPageName=STRK%3AMEBIDX%3AIT&nma=true&si=9fPuFYgf0hlrZiqGHuKI485035c%253D&orig_cvip=true&rt=nc
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http://www.ebay.com/itm/vintage-sears-silvertone-neutrodyne-tube-radio-model-92-/160907357547  
Vintage Sears SilvertoneNeutrodyneTube Radio Model 92
Chassis ID Strip  MOD-92  S28880  cmk
Three Variable Capacitors/RF Stages; 7 Tubes; Single Ended Audio; Similar Power Transformer/Placement; 1st RF & Detector Tube different shape, idicating 4 pin Triode like My Radio
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http://www.ebay.com/itm/Vintage-Antique-Silvertone-Metal-Case-Tube-Radio-Model-FF-S-26969-/222370534872?hash=item33c65115d8
Vintage Antique Silvertone Metal Case Tube Radio Model FF S 26969
Similar to my Radio, 6 tubes; 1st RF a 4 pin Tube Socket; three Variable Capacitors; single ended Audio Amplifier
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It looks very much like the Silvertone 108 8-Tube Neutrodyne Order= 57DM 1080 or 1082  . However, the 1st RF is a 4 pin 226 triode, not a 5 pin 227.  
Silvertone 108 8-Tube Neutrodyne Order= 57DM 1080 or 1082
http://www.radiomuseum.org/r/sears_roeb_108.html  
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http://picclick.ca/vintage-SILVERTONE-HI-BOY-TUBE-RADIO-Untested-NEUTRODYNE-331916463674.html#  
Similar architecture 4 RF Stages; Tube shapes Detector and 1st RF indicate  both 227 5 pin Tubes; Push Pull Audio  
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http://www.ebay.ca/itm/331916463674?rmvSB=true  
Silvertone Hi-Boy (Table Top) Tube Radio Neutrodyne #39 Chassis/7 Tube
7 Tube
Similar architecture: Shield added between 1st & 2nd RF;  similar Power Transformer; 1st RF and Detector Tubes look alike indicating 5 pin 227's
-------------------------------------------------------------------------------------------------------------http://www.ebay.com/itm/Vintage-Antique-Silvertone-Metal-Case-Tube-Radio-Model-FF-S-26969-/222370534872?hash=item33c65115d8
Vintage Antique Silvertone Metal Case Tube Radio Model FF S 26969  
6 Tube
Similar to my Radio, 6 tubes; 1st RF a 4 pin Tube Socket; three Variable Capacitors; single ended Audio Amplifier
---------------------------------------------------------------------------------------------------------------
It looks very much like the Silvertone 108 8-Tube Neutrodyne Order= 57DM 1080 or 1082  . However, the 1st RF is a 4 pin 226 triode, not a 5 pin 227.  
8 Tube
http://www.radiomuseum.org/r/sears_roeb_108.html  
-----------------------------------------------------------------------------------------------------------------------------
http://picclick.ca/vintage-SILVERTONE-HI-BOY-TUBE-RADIO-Untested-NEUTRODYNE-331916463674.html#    
7 Tubes      EBAY Listing
Similar architecture 4 RF Stages; Tube shapes Detector and 1st RF shape indicate's  both 227 5 pin Tubes; Push Pull Audio  
------------------------------------------------------------------------------------------------
http://www.ebay.ca/itm/331916463674?rmvSB=true    
7 Tube        EBAY Listing
Silvertone Hi-Boy (Table Top) Tube Radio Neutrodyne #39 Chassis/7 Tube
Similar architecture: Shield added between 1st & 2nd RF; Diference in type and placement of Transformers Power and Audio; 1st RF and Detector Tubes look like 5 pin 227's
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Wignaw
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