Murphy solid-state stereo wallgram with broadcast band radio and BSR C129 record changer
Very similar in appearance to the Pye model 544 Scimitar.
Valves (13 transistors, 3 diodes): BF254, BF254, AA132 / OA91 Diode, BF254, AA138 / OA90 Diode, BC149C (BC239C / NX1131), BC149C (BC239C / NX1131), BC148C / BC238C, BC158B / BC308B, BC148C / BC238C, BC158B / BC308B, ( AC117, AC175 Left Channel Matched Output Pair), ( AC117, AC175 Right Channel Matched Output Pair), 1N3194 Rectifier
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
Intermediate Frequency unknown - not in service documentation. Most likely 455kc/s
Service information (Murphy_Wallgram_MG1387_Series_8_Chassis_Service_Documentation.pdf) here
General Construction Notes for Allied Industries Ltd (Fisher & Paykel):
Murphy stereogram model prefix indicates radio bands - ie: SGA is Stereogram All-Wave, SGD is Stereogram Dual-Wave. SG means Stereo broadcast band radio only (stereo referring to the record player - radio was only mono. Dashes and spaces seem to be used in some places while not others - ie: SG1387 is the same as SG 13-87
Dating Murphy equipment is a little difficult due the codes not appearing to contain dating info. Here is what can be seen from the models examined:
SGx61x (ie SG615, SGD618) radiograms seem to have run from 1959 through until 1961/62 and used Garrard Type A record changers (these were released approximately 1959)
The first digit or digits seems to reflect the number of active devices (ie: SG 14-32 has 14 transistors, SG615 has 6 valves)
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