[ARC5] Are 1.415 MHz crystals available?

[WA5CAB--- via ARC5]

There is one practical problem with moving the IF 65 KC.  The dial is going 
to be off 65 KC, too.  And you may or may not be able to recalibrate the 
front end to sorta track actual frequency.

In a message dated 03/07/2015 17:40:04 PM Central Standard Time, 
wrcromwell at gmail.com writes: 
> Hi Charles,
> 
> Th best thing to do is put your signal generator on it and see if your 
> IF strip will adjust that far. My own guess that it will. You won't have 
> to modify anything to do it and if it won't tune that far you can just 
> tune it back to 1415 kc. While you have the screwdrivers and frequency 
> meters out see if your BFO will go that far, too. Let us know what you 
> find.
> 
> I think the pair of converters and heterodyne oscillator for a filter on 
> a different freuency is a messy approach, too. It does work - others 
> have done it. Your idea will be neater.
> 
> 73,
> 
> Bill  KU8H
> 
> 
> On 03/06/2015 11:16 PM, Charles wrote:
> >I'm interested in building a crystal filter for my 3-6 Mc. receiver 
> >(1.415 MHz IF) in a ladder (Cohn minimum-loss) design.
> >So I need four or five identical crystals at, or near, that frequency.
> >
> >Forget new, they're $36 apiece from ICM! Surplus Sales has 1.480 MHz 
> >rocks for $5 but I'm not sure if the IF cans have that much retuning 
> >range (I don't want to hack them up).
> >The design gets more complicated if I up- and down-convert to more 
> >readily available canned filter frequencies.
> >
> >Does anyone know if the IF can be returned to 1.480 without modifying 
> >the L or C values?
> >If not, are crystals closer to 1.415 available anywhere?
> >
> >thanks
> >Charles
> >WB3JOK/0

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