The Murphy B301 was manufactured for Fisher & Paykel Ltd by Allied Industries Ltd (Fisher & Paykel) in 1957.

6-valve plus magic eye tuning, 8-band bandspread radiogram

1957 Murphy B301 'Panharmonic'


Technical Information

Valves (6 + magic eye): EF85, 6C9, EF41, EBC41, EL41, EZ40 and EM81 Magic Eye

Intermediate Frequency: 470kc/s

Frequency Bands: 8

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

Service information Murphy_B301_Panharmonic_radiogram_-_6V_BS_AC_-_1957.pdf

Note: Bass boost modification in service documentation - early releases of the B301 had poor bass response.

6C9 frequency mixer is Mazda type Triode Heptode not the American 6C9 twin tetrode.

1957 Murphy B301 'Panharmonic'

1957 Murphy B301 'Panharmonic'

1957 Murphy B301 'Panharmonic'

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)