CANADIAN MARCONI HOME ENTERTAINMENT -  MODELS 73, 74  and 75 

Type: 10 tube, AC superheterodyne receiver. Employs double conversion on short wave bands; single conversion on the broadcast band.

Frequency range:

528 to 1741 KHz
2100 to 7440 KHz
7222 to 23200 KHz

Tube lineup: 2 x 6K7. 2 x 6A8,  1 x 6H6, 2 6C5, 2x 6F6, 1 x 80
Speaker size: 11 inches.
Audio Power: 7 watts
Vintage: ?

Input power:

115 VAC 60 Hz  95 watts
115 VAC  25 Hz 99 watts

Comment:

Model 70 has an overload indicator, It comes on whenever the audio voltage across the speaker
coil exceeds 3 volts. It turns off when the voltage drops below 1.5 volts.

070_01a.jpg
Model 70  (Via Kijiji,ca)
070_02.jpg
Model 70 - Closeup of dial (Via Kijiji.ca)
Contributors or References:

1) Canadian Marconi Service Manual - Volume 1
 

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Aug 8/19