Early Transistor radio, manufactured 1959/1960. Another Pye-originated radio released under the Pam brand. Clearly shares its insides with the Pye “Slim Six” (Model P128B), but in a completely different case. Still uses Pye-manufactured transistors as in the Pam 710 but of higher specification.
Tuning was 183-555 metres (Medium Wave) and a fully tunable Long Wave including 1500m for the BBC Light Programme. (The Pye equivalent had only a single 1500m preset)
It used the then fairly new PP9 battery instead of the 6V U11 of previous transistor sets.
Transistor line-up: V6/R4M, V6/R2, V6/R2, V10/50B, V10/50B, V10/50B. Push-pull output with a conventional output transformer.
(The equivalent Mullard transistors would be OC44, OC45, OC45, OC71, OC72, OC72).
This set, to which I can find no reference elsewhere, was purchased for £12 in an auction and worked perfectly on switch-on. Not bad for an early design now well over 50 years old, and apparently never repaired!
The PP9 is not original. It uses a printed replica sleeve over a modern battery.
For service information, get the Pye P128B sheets from Paul Stenning