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FAQ 157-2002-en

How can I modify a Star receiver from PAL B/G to PAL I ?

Respuesta: 

First of all, you need to know that:

  • The output of the RF modulator for the PAL I standard requires 6 MHz spacing between the video-audio carriers, instead of 5.5 MHz that the PAL B/G needs.

Therefore the hardware for PAL I needs to be modified:

  • There are three components between pins 17 and 18 of the IC TDA5666-5
  • These are:

C26
R10
L1 variable coil

L1 has to be adjusted to obtain the 6 MHz spacing between the video and audio carriers.

This can be carried out via the use of a field strength meter.

  • Do not use a spectrum analyser.
  • The frequency measurement of the FSM is very accurate.
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