The trimmer cap should swing them OK - is it possible that it could be
defective or even disconnected somehow?
From: "Paul Kraemer" <firstname.lastname@example.org>
> Need part 71800106 HC-18/U 18.0MHz xtal #210045-1
> Used in FT-901 counter unit
> Have tried "off the shelf" 18 MHz crystals from Mouser and DigiKey
> The frequency is correct but they cannot be moved by the corrector variable
> cap in the circuit
> Am I missing something???
> Paul K0UYA
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