Trasmac Tech Technology

For previous parts of the article, must see page 1 here. Chassis restoration Superficially at least, the radio looked reasonably serviceable as it came to me. The speaker had obviously been replaced at some time in the past, because the Plessey brand did not appear until the 1960s, well after the set had been manufactured. The replacement speaker was also a twin siliconchip.com.au  cone type which made it all the better for quality though not authenticity. A couple of problems were also immediately evident. First, the wiring to the grid cap of the 6U7 was in rather a poor state and would have to be replaced. In addition, the external insulation on the mains transformer had broken away, exposing the low voltage filament winding. Removing the chassis exposed further problems. The first thing I noticed was that it was covered in a uniform brown staining that was particularly evident on the plates ...

Here is the video on the subject: T HE of Pye's MODEL Manufactured in 1951, it reflects the shortages imposed by World War 2 on Australian society at the time. The first thing you notice is that the simple timber case is made of 5-ply timber. In this respect, contemporary timber cabinet Astors and STC radios both had similar minimalist construction techniques during the early 1950s. The veneered cabinets have character but they don't really compare to the high-quality timber cabinets seen on pre-war radios. Pye's model APJ is some 520mm wide, so it is quite a large mantel ra dio. It uses a fairly standard superhet circuit with a proven valve line-up and the only two real advances incorporated into the radio for the time are a thermo-mouldable plastic surround (i.e, not Bakelite) and a 6AV6 miniature valve. As well as tuning the standard broadcast band, this radio also covers three shortwave bands and the...