PACEMAKER 5150AB 'LEADER' (1950)

The Pacemaker 5150AB was manufactured for H. W. Clarke Ltd by Collier & Beale Ltd in 1950, production ran for 3 years.
This model is part of the Pacemaker Leader series of radios.

Battery / mains portable with flip-front dial, sometimes known as the Flip-Front, or Picnic Radio.

This was the first version of three (5150AB, 5153AB and 5155AB) and had no tone control.

Note, there is a loop antenna mounted behind the dial in this model - in subsequent models it ran around the inside of the front half of the case.

Battery: Eveready 753 dual-A-and-B pack, 9V and 90V, similar to this:
Vintage AB battery 9V and 90V

There is a switch on the back to select battery or mains operation, and then the on-off switch is incorporated into the dial, so the radio comes on when the dial is opened.

Colours - Ivory, Brown (Burgundy), Grey / Ivory, Mint Green / Ivory, Baby Blue / Ivory and Red / Ivory (mention of a gold coloured one in advertising, but never sighted).

CAUTION: The cabinets on these sets are fragile, and undamaged cases can be hard to find - especially the backs.  Due to their age the handles should not be trusted, carry them carefully.

Based on an American model by Zenith - the "Tip Top Holiday" model 4G903:

Vintage Zenith "Tip Top" Holiday Portable AM Radio, Model 4G903, 4 Vacuum Tubes, Circa 1949 (8336124828)
Image from Wikimedia

And also sold in Australia as the Technico Pacemaker model 1259 or TO.8:

Technico Leader model 1259

 

Valves (5 + rectifier): 1T4, 1R5, 1T4, 1S5, 3V4, RE3613 flat-pack selenium rectifier

Intermediate Frequency: 455kc/s

Frequency Bands: 1

Chassis Notes(most schematics can be clicked to download a full size version)

1950 Pacemaker 5150AB

1950 Pacemaker 5150AB

General Construction Notes for Collier & Beale Ltd:

Model numbering followed no real sensible scheme until around 1940 - and prior to 1934 apparently no model numbers were assigned at all.

From 1940 a 3- or 4-digit system was employed where the first digit indicates the number of valves, the second digit is the number of bands and the third is the year of manufacture.  From 1950 the last digit became two digits, eg: 5151 is a 5-valve broadcast-band only from 1951.

From 1957 model numbers were replaced with model names, ie the Pacemaker Buffalo - which makes the year of manufacture hard to determine unless service info is consulted (although C&B often released service info after the radio, and the date on the service info was for its release, not that of the model.