Shifting Frequency of a VHF Crystal?

Question

I have a boatload of 165.550 MHz Regency 10.7 MHz IF Crystals. I need them to resonate for 165.500 MHz. How can I shift the crystal frequency down 50 KHz without opening the 'tincan' and messing with it? Can I add a small capacitor in parallel to shift the crystal frequency down? How can I determine the value of the Cap? Likewise, is there a rule of thumb in order raise the frequency of a crystal? Is 50KC too big of a jump? Thanks Much, 73 J

Answer 1

You can add inductance in a sequence like this.

^{simulate this circuit – Schematic created using CircuitLab}

Yes, you can also try adding capacitance in parallel.