CANADIAN MARCONI HOME ENTERTAINMENT -  MODELS 66 , 67 and 68 (Jubilee Series) 

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Type: 7 tube, AC powered superheterodyne receiver
Circa: 1936
Price in first year of sale: $95.50

Frequency range:
Broadcast - 525 to 1750 KHz
Short Wave - 5.560 to 18 Mhz

Tube lineup: 2 x 6D6, 6A7, 6B7, 2 x 42, 80
Undistorted audio power:

66 - 3.2 watts
67 - 3.3 watts
68 - 3.3 watts

Maximum audio power:

66 -  4.5 watts
67 -  5.4 watts
68 - 5.4 watts

Speaker size: ?

Input power:

115 VAC 60 Hz 72 watts
115 VAC 50 Hz 74 watts

Cabinet: Tabletop
Dimensions: ?
 

MODEL 66 PHOTO

Model 66. (Photo from the collection of Lew Magrish)

This is the console version of the Model 66 radio,
Circa: 1935
Price in first year of sale: $129.50

The model 67 is part of the Jubilee series of 1935 which included Model 66, 67 and 68. So named in honor of King George V Jubilee (Silver Anniversary) 25 years after taking the throne in 1910. He was Queen Elizabeth's II grandfather.

Model 67 (Photo from the collection of Ken Walsh)

Model 67

Model 67 dial closeup

Model 67 rear view

Model 67 nameplate.

All model 67 photos in this table by  Kevin Christopher

MODEL 68 (rightmost image) from from Radio Trade-Builder March 1935. Click on thmbnail to enlarge. (Proivided by Lewis Bodkin)

 

Electrically speaking, the Model 68 chassis differs slightly from the model 67 . The model 68 provides an overload indicator. It is a neon lamp which connects across a portion of the primary of the audio output transformer. When the voltage across this portion of the transformer rises to 70 volts, the lamp will glow. This corresponds to a power level of 1.5 watts.   If the volume is increased, the lamp will glow with more brilliance thus indicating that a satisfactory audio tome will not be produced.

Price in first year of sale $149.50

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Contributors or References:

1) Canadian Marconi Service Manual - Volume 1
2) Tom   TWACHSEN@aol.com
3) http://www.radiomuseum.org/r/canadia_ma_66_ac.html
4) http://www.radioatticarchives.com/radio.htm?radio=8097
5) http://www.radiomuseum.org/r/canadia_ma_67_ac.html
6) http://www.radiomuseum.org/r/canadia_ma_68_ac.html
7) Kevin Christopher  <kevinivc(at)gmail.com>
8) Lewis Bodkin 05bodkin555(at)mail.com>
 
 

Aor 9/19