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Technical specs for Futaba crystals?

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Old 11-23-2002, 04:19 AM
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Mavi91
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Default Technical specs for Futaba crystals?

I'm a radio amateur and curious as to the technical specification for Futaba dual conversion receiver crystals. Are these fundamental or overtone crystals? What is their frequency relative to channel? (I'm assuming they go in the first stage mixer.) Do they have a capacitance rating?

As a related question, is there any way to get a schematic for Futaba receivers? (I'm specifically interested in the FP-R127DF).
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Old 11-23-2002, 07:47 AM
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easymoney
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Default Technical specs for Futaba crystals?

They are not fundamental... in fact 5th overtone crystals.
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Old 11-23-2002, 02:47 PM
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Mavi91
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Default The plot thickens

Now if I knew what the second Intermediate Frequency was, that would do it for me. 10 mHz? 455 kHz?

Thanks...
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Old 11-23-2002, 05:29 PM
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Steve Lewin
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Default Technical specs for Futaba crystals?

IF is the pretty well universal standard of 10.7MHz. Oh and the LO freqency is below channel freq. At least that's true for the 35MHz versions, it could be different for whatever you're interested in.

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