[Milsurplus] ID these crystals?

[J Forster]

They are very different designs. The APN-1 uses a triangle modulated CW FM
technique, the SCR-718C is pulsed time-of-flight

-John



John Franke wrote:

> The SCR-718C radio altimeter  timing oscillator uses a crystal for 98.356
> kHz.
> John WA4WDL
> ----- Original Message -----
> From: "J Forster" <jfor at quik.com>
> To: "Hue Miller" <kargo_cult at msn.com>
> Cc: <milsurplus at mailman.qth.net>
> Sent: Thursday, October 18, 2007 7:43 PM
> Subject: Re: [Milsurplus] ID these crystals?
>
> >
> >
> > Hue Miller wrote:
> >
> >> PS- i also have one of those 83 or so kHz crystals from an APN-1 or
> >> something
> >> like that. Doubles into LF experimenter band, i think. Free if this is
> >> a project of
> >> yours.
> >
> > There are no crystals in the APN-1 or ARN-1.
> >
> > -John