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History of the manufacturer  

Campbell and Addison; London

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Name: Campbell and Addison; London    (GB)  
Abbreviation: campbell
Products: Model types
Summary:

Campbell and Addison, 40, Howland Street, London W.1. Brand name Caydon.

History:

This manufacturer was suggested by John Koster.


Some models:
Country Year Name 1st Tube Notes
GB  27 Caydon Table Model   HF valve with aperiodic interstage coupling, tuned anode HF valve, grid-leak detector, two... 
GB  27 Caydon 5-Valve Portable   Three controls: the first tunes the frame aerial, the second the HF stages and the third a... 
GB  27 Caydon Long-Range 2   HF valve with tuned anode, tuned HF valve, grid-leak detector, two transformer-coupled LF ... 
GB  27 Caydon Long-Range 1   HF valve with tuned anode, tuned HF valve, grid-leak detector, two transformer-coupled LF ... 

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