Crystals

[Jeff Hughes]

I guess the real question is can a futaba receiver be "retuned" for the 
opposite range? 

> 
> 
> Some brands are tuned to work with the whole range. Futaba and I 
think JR 
> are tuned for high and low.
> 
> 
> 
> 
> 
> >From: s.vannostrand at kodak.com
> >Reply-To: discussion at nsrca.org
> >To: discussion at nsrca.org
> >Subject: Re: Crystals
> >Date: Thu, 12 Dec 2002 14:13:56 -0600
> >
> >No problem.  THe differences are in the receivers, not the 
crystals.  Just
> >be sure you know if your reeiver is low or high band, then just buy 
the
> >crystal a channel that the receiver will work with.
> >
> >--Lance
> >  Forgive my ignorance....  My local hobby store sells receivers, 
PPM, and
> >separately sells crystals for them.  Might be channel 6..or 60.  
Could
> >this be a problem?
> >
> >Harry..
> >
> >  ----- Original Message -----
> >
> >From:  s.vannostrand at kodak.com
> >
> >To:  discussion at nsrca.org
> >
> >Sent: Thursday, December 12, 2002 1:59 PM
> >
> >Subject: Re: Crystals
> >
> >
> >
> >Tony S can give you the tech detail, but receivers are tuned 
circuits. The
> >crystal is key to creating the reference frequency used to filter the
> >signal picked up on the antenna.  The crystal sets up the basic 
reference
> >frequency and the circuitry around it can only be used for a narrow 
range,
> >or band, of frequencies.  The futaba receivers come in two types 
that have
> >components that tune each to a different band.  You can put a low 
freq
> >crystal in a high band receiver, but you'll have a detuned system, 
reduced
> >range, and possible signal lock loss.  I wouldn't do it.
> >
> >--Lance
> 
> 
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