[MrFixr55]

Hi Antipodal,

I don't think it is a Model 5 after comparing the chassis layout to the pictures that you provided, but it must be very similar, so the schematic should be good. However, it is a Philco manufactured, aftermarket under dash one piece set. Often, there was no dash space for radios, especially before about 1935 or so, as a standard "DIN" (a European term but no American equivalent) or manufacturer designated opening did not occur until the mid to late 1930s. Therefore, the radio mounted on the firewall with wire cable controls to a "Head", usually mounted on the steering column or sometimes under the dash, or sometimes in place of the clock for an in-dash look. This set breaks the mold by mounting the entire set on the lower lip of the dash.

The Model 5 is a "modern" 5 tube vibrator powered superhet radio, similar to the AA5 circuit with pentagrid converter, remote cutoff pentode IF, combo diode triode detector/1st AF amp and pentode output, compared to others such as the Model 3 (a TRF set), Ca 1931-1932 and even others with a higher number such as the Model 7 Superhet, ca 1032-1933, which required B Batteries or an external Dynamotor or Vibrator supply.

Another clue to your set not being a Model 5 is that the Models 3, 5, 6, 7, 9, etc. were known as "Transitones", the name of the company that designed and built them before Philco bought the company. Yours is branded "Philco" and built with Philco branded caps.

By the mid-1930s, car manufacturers started designing their cars for either the addition of radios or were sold with radios. These aftermarket under-dash or 2-piece radios were additions to older cars which were designed or built before the car radio.