Philips FM92E Manual page 30

ie:
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Unsolder the main & offset coils from the VCO board. Mark each coil as main and offset.
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When Un-soldering, look at de-soldering points above; do not un-solder former mounting points.
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Remember to cut glue off former mounting points. These are on the opposite side to the coil side. You
may have to heat up the glue to remove it.
•
Be careful of PCB pins, they bend and break easily.
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Refit the old main coil into the offset's coil position.
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Strip all wire from the old offset coil. Remember which way the coil was wound.
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Scrape off old glue from former with scalpel and fine file.
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If the IF frequency is 21.4 MHz then rewind with 8 turns of same size of wire [150 mm length, 0.63mm].
[or 146mm of Leon's enamel coated wire, 0.??mm] The same way as the old offset coil.
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If the IF frequency is 10.7 MHz then rewind with 8 turns of same size of wire [150 mm length, 0.63mm].
[or 146mm of Leon's enamel coated wire, 0.??mm] The same way as the old offset coil.
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Refit the old offset coil [now 8 turns] into the main's coil position.
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Don't forget to use a hot glue gun or other method of securing the two coil formers to the ceramic board.
Philips FM92E Conversion to 6 Meters: Version 3.9 Page 30