Murphy Radio Model TA92 & TU92 From 1947
The TA92 and TU92 receivers pictured below were essentially the same, with differing power input arrangements. It can be noted that a mains transformer with rectifier valve mounted above is fitted to the TA92, (to the right of the chassis - rectifier valve currently missing from the photo for some reason!) whereas in the TU92 a dropper together with rectifier valve is fitted in the position of the mains transformer in the AC only set. There are other minor differences between the two sets, for instance notice the tuning scale back plate. On medium wave this set uses only four valves, however if one of the shortwave bands is selected an SP41 R.F. Pentode amplifier is introduced into the circuit before the TH41 frequency changer (SP181 before TH233 in TU92). The line drawings seen at the bottom of each page in this section of this website are all taken from a booklet produced by Murphy as a reference for dealers when setting part-exchange values, and the AC and AC/DC versions of the ‘92 receivers are the only sets to be individually listed and pictured. I don’t know the significance of this, perhaps it was just an oversight, but if you have any ideas email me at the contact address.
Continue to 1947
© COPYRIGHT RETAINED ON ALL TEXT AND IMAGES ON THIS SITE.