G6 Chassis Design

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The Philips G6 chassis made use of hybrid technology.  The design employed 21 thermionic valves, 17 transistors and 44 other semiconductor devices.  The initial Philips sets (pre-fixed G25) employed a Mullard 25inch (A63-11X 25 Colourscreen) shadow mask cathode ray tube (CRT).  The design used a 6 push-button integrated tuner covering VHF and UHF bands.  A tuning indicator was provided to assist with fine tuning of signals.  An audio tone control was also provided. The receivers made use of a Mullard DL1 glass delay line.

The dual standard set could receive the following channels:

Channels 1 to 3       Band IATo either 405 or 625 line Standard.
Channels 3 to 5       Band I
Channels 6 to 13     Band III
Channels 21 to 68   Band IV and V

G6 Panels (Click on images for a much larger detail)

The main chassis was mounted vertically (see below) at the rear of the cabinet and could be hinged backwards (also see below) or removed completely for serving purposes.  All of the components not attached to the main chassis were connected by plug and socket interconnections.

G6 Chassis (Dual Standard) in Upright Situation

G6 Chassis (Dual Standard) in Lowered Situation

A separate convergence panel was used which contained the convergence controls, grid controls and grid switches.  This panel could be removed and placed on top of the cabinet to aid ease of serving.  Plates 3 and 4 below show the convergence panel from the top and underside.

G6 Convergence Panel Control Side

G6 Convergence Panel Underside

The G6 IF and colour decoder circuitry shared the same PWB – see below.

G6 IF and Colour Decoder Panel

The G6 Timebase circuitry and tube base PWB’s are shown below.

G6 Timebase Panel

The G6 Tube base

Thanks to Stewart for the photos of his awesome G6 set.