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History of the manufacturer  

Supersonic (Chassay Bros), Bulawayo, SR

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Name: Supersonic (Chassay Bros), Bulawayo, SR    (ZW)  
Abbreviation: supersonic
Products: Model types
Summary:

Pieter de Kock: In (then) Rhodesia, the 'Supersonic' company was successful designing and manufacturing portable radios, car radios and also some gram radios from the middle 1950s to the 1980s. Now the country is called Zimbabwe.

History:
The founder(s) appear to have been involved in 1948 with the design of the Ever Ready Model J or "Saucepan Special" while working as staff member of the Northern Rhodesia (NR) Radio Services in Lusaka.
Later the company uses "Supersonic" as a brand and is Chassay Bros. (Private) Ltd. in Bulawayo, Southern Rhodesia (SR) and produces Transistor sets.
Today (2012) there is still a "Supersonic Radio" at 69 Josiah Chinamano Rd, Bulawayo, Zimbabwe. Many "Linkedin" profiles list "Supersonic Radio" as a former Employer in the late 1960s. There was also a Supersonic Radio, Livingstone, Zambia at least in late 1960's / 70's


Some models:
Country Year Name 1st Tube Notes
ZW  58 D29 DF96  Unusual multiband (BC and 7× SW) portable with magic eye and push pull audio output stage.... 
ZW  65 4 Band Radiogram PRG80   The  PRG80 uses audio transformers and the PRG80C doesn't use audio transformers.... 
ZW  59 PR56 OC170  Portable radio fitted with sockets for car aerial & earphone. SW bands 3.2-8 Mhz, &... 
ZW  55 Mullard D11 DK92  Sold in South Africa in 1950s. Uses 2 x B104 (2 x 45V for 90V and AD4 for 1.5V LT ... 
ZW  80 Conqueror Hi-Fi P.R.127   Materiais diversos-Plastico, Couro e Metal. 5 Bandas: OM 550-1600 KHz OC1 1,7-4 MHz... 
ZW  59 Criterion UCH81  Elliptical Speaker 16cm x 8cm. Speaker model 874P Mk II made in England by R&A. ... 
ZW  65 4 Band Radiogram PRG80C   The Monarch PRG80 uses audio transformers and the PRG80C does not. Probably uses 6 off D ... 
ZW  58 D28A EBF89  The tuner and power supply/audio amplifier are in separate enclosures. The vibrator... 
ZW  58 D16 DF96  Uses 2 x B104 (2 x 45V for 90V and AD4 for 1.5V LT Mains PSU has a "rejuvenate" set... 
ZW  66 TU-133M   Wavebands: BC: 550 - 1600 kHz, SW1: 49 - 120 m, SW2: 25 - 41 m, SW3: 11 - ... 
ZW  66 TP-133 AS   Record player brand - BSR P144 - 16/33/45/78 rpm 
ZW  66 TL-133   Floor stand speakers - Impedance 8 Ohms. 

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