Pye Model Q

 A very heavy portable radio from 1932, this set has been partly restored, but the methodology was a bit off. The previous owner has used modern plastic covered wiring to replace what was probably perished rubber covered leads. There's a frame aerial built into the cabinet and there's a rotating mount under the case so the user can turn the set to get the best volume or to minimise interference.


 Below is a view of the side of the receiver followed by a close-up of the control panel.



 The maker's logo carries the words "Pye Cambridge England". The set dates from 1932 and currently has the following four valves from left to right..

RF amplifier Marconi W21 with B4 base and top cap, Detector Mullard PM2HL in a shouldered glass envelope and B4 base, AF amplifier another Mullard PM2HL but in a balloon shaped envelope and a KT2 audio power output with B5 base. Originally the valves would have been all Mazda types: SG215, HL2, HL2 and Pen220.


 Various labels found on the set. Right a very detailed blow by blow order about the selling price of the set. You can see a little more of this practice by clicking the picture which is linked to the page dealing with a Defiant receiver.


Below is an interesting label regarding the set's 2 volt accumulator.

It has the owner's name "Crook" and the address "....dge Farm"

The usual power requirement for this set would have been a pair of dry batteries, grid bias and HT plus a 2 volt accumulator. These would have added several extra pounds to what is already a heavyweight.





 Top.. the Marconi royalty label, and below this the set's serial number stamped on the chassis. The letter "P" before the number 1895 indicates that it's the P version of the Model Q receiver.
 The loudspker currently fitted is the one shown below. It looks more modern than those fitted to other receivers I have of this vintage so may have been fitted by the last owner?


 Below is the circuit diagram for this "P" version of the Pye Model Q. It shows Long and Medium wavebands, a differential condenser reaction control, the standard method of volume control by a rheostat in the RF amplifier filament supply. There's also a trimmer condenser across the aerial coil for peaking volume.

Click the circuit to see the Trader Sheet.


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