Crystals

[s.vannostrand at kodak.com]

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





"Jeff Hughes" <jhughes at hsonline.net>
Sent by: discussion-request at nsrca.org
12/11/2002 01:43 PM
Please respond to discussion

 
        To:     discussion at nsrca.org, "discussion" <discussion at nsrca.org>
        cc: 
        Subject:        Crystals


What's the deal with high band and low band for futaba crystals? I'm
having interference problems on channel 44 at our field, and a friend
offered me an extra channel 35 transmitter module and one rx crystal.
Can I switch over without harm? According to Tower's website 44 is
considered high band and 35 low band.
Jeff


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