New Zealand imports a lot of second-hand Japanese cars with the same FM
tuning problem.

The solution is to purchase a device called a band expander which plugs in
between the aerial and the radio and also connects to the 12 volt supply.
The expander costs around NZ$15 = approximately 4 UK pounds and works by
shifting all of the station frequencies up by 12 MHz. In your case this
would give a tuning range of 88 to 102 MHz - I understand that there are
alternative units available that shift the frequency by 14mHz if you require
the top end of the band.

They work fine!

Terry Brookes




"N Cook" wrote in message
...
Model MDX C150 made for Japan use and FM band set to 76MHz to 90MHz, UK is
about 88 to 108 MHz

Monitoring the VT line to the tuner varies from 1.52V to 4.2V from end to
end of this band. 2 banks of 6 channels programmable in this 76 to 90 M
range plus 3 more that come up annunciated as 1ch with a VT of 5.66V, 2ch
of 6.83V and 3ch of 8.04 V which coincides with a local station on
107.8MHz,
B+(for FM ) on the tuner is 8.29V.

Other than shifting this VT voltage and a 'lying' LCD display anyone know
how to reprogram these extra 3 channels that don't respond to the Seek +
/ -
buttons or even better resetting the whole fm band.

Also what does BTM mean coming up on one button selection?

electronic hints and repair briefs
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