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Old 31st Oct 2017, 11:15 am   #8
Pieter H
Tetrode
 
Join Date: Sep 2017
Location: Waalre, Netherlands
Posts: 67
Default Re: Philips-Mullard TV tuners 1955-1960

Hi John,

something interesting happened here.
Contrary to your statement, the "continental" Philips tuners changed to the frame grid PCC88 (in combination with the PCF80) in 1956 and it was used massively in two generations of tuners until 1963. Apparently Mullard stuck to the PCC84, for reasons not clear to me.

In contrast, Mullard was the first to switch to the PCC89 in 1959 (still in combination with the PCF80), whereas the "continentals" waited for the PCC189. This one was introduced in 1960 in the French tuners from the Dreux factory, again still in combination with the ubiquitous PCF80.

In 1961 the Dutch and German factories then finally changed over to the new combination PCC189-PCF86, both frame grid valves. I still have to find out where the PCC89 and PCC189 differ, but it is clear that the latter quickly replaced the 89.

To be continued!
Cheers, Pieter
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