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I see the exact frequency is specified in the setup instructions as 4.267200 MHz. If you do order one, be sure to specify the full accuracy and not just 4.27.
Can you post a clear pic of the schematic of the circuit that uses this? Curious as to what it does with such an oddball frequency.
Also strange that your reading is off by almost exactly 1 Mhz. Can you find the crystal and read what frequency is marked on it?
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