HMV Model 1113

 A very scruffy looking set externally, but the interior is in good condition.

All I intend to do for the moment is to remove dust, fit a new speaker cloth and then clean the dial.

 

 Apart from loose metalising around the KTW61 and a taped up mains lead the interior looks presentable.

 

 The dial is very clear and as you can see, the set has medium and short but no long waveband. Wartime manufactured sets were not common other than the "Wartime Economy Model" and had dropped long waves because the government was using these for transmitting propaganda and coded messages. Regional stations were now transmitting the Home Service, a common broadcast instead of independent regional transmissions which could be used by the enemy to guide their bombers. I'm a little puzzled by this explanation because clearly, regional transmitters, once their frequencies were known, could still be used to guide aircraft to their targets. Unfortunately, I was too young to remember much in the way of radio broadcasts during WW2 although we had a new 1939 Murphy which served us well until the late 50s and intermittently until the early 60s if it was given a good thump.

 

 After a clean and application of scratch remover to the case and with a new speaker cloth the set looks much better. The control knobs have engraved markings and responded to rubbing with a crayon to restore their legibility.

 
 

 

 

 Click on the label to see a large circuit diagram. This is for the similar Model 1112 which has a second shortwave band and a slightly different chassis layout.

 Below the circuit for the identical-looking but more expensive Model 1112 with its medium plus two shortwave bands.

 
 

 HMV Model 1122

 

 This set dating from 1951 must be an early example of saving the rainforests as the minimum amount of wood is used in the rather odd shape. Design-wise the interesting shape wouldn't be noticed if the receiver was to be placed for normal listening. The four controls have been moved from the front to the sides as part of the design brief. It clearly needs a new speaker cloth and some tidying up of the woodwork..

 

 

 

 I removed the back to reveal a lot of accumulated dust and general deterioration from damp.

The set has Long, Medium and Short wavebands and uses the following B7G valves.. X78, W77, DH77, N78 with a U78 rectifier.

Presumably the designers modified the chassis by adding that oddly shaped metal plate carrying the N78 and U78 valves?

 

 

 Click the circuit to see the HMV 1122 Service Sheet

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