Changing Frequencies.....danger??

[dwaynenancy]

I forgot to say in my previous post but it is legal for ham operator to 
change a crystal in the 50 MHz or 6 meter band.  No one but the factory can 
do that on 27, 72 or 75 MHz except by changing Tx modules.  It's okay to 
change crystals in the receiver.  Note that Futaba has low/high receivers 
too.  Dwayne
----- Original Message ----- 
From: "Ed White" <edvwhite at yahoo.com>
To: <discussion at nsrca.org>
Sent: Wednesday, June 29, 2005 10:16 PM
Subject: RE: Changing Frequencies.....danger??


> I've done this (flown on chan 16 and 29 on 72 MHz and
> chan 00 on 50 MHz) and done this with both my Futaba
> Super 7 and 8UA transmitters with no problem.  The 9C
> uses the same module.  You can do this freely and
> legally.  This is not the same as changing a crystal
> in the transmitter.  To the FCC what we call the
> module they consider the entire transmitter, except
> for antenna.
>
> But Steve is absolutely correct, the receiver is a
> completely different matter.
>
> --- RC Steve Sterling <rcsteve at tcrcm.org> wrote:
>
>> No problem in a 9C. That module in the back that you
>> swap to change
>> frequency is a self contained module, no RF parts in
>> the rest of the
>> transmitter (except the antenna I guess). You can
>> even switch to 6 meters
>> which is 20 mhz away.
>>
>> Receiver is a completely different story.
>>
>> -----Original Message-----
>> From: discussion-request at nsrca.org
>> [mailto:discussion-request at nsrca.org]On Behalf Of
>> F3AFlyer7 at comcast.net
>> Sent: Wednesday, June 29, 2005 5:41 PM
>> To: discussion at nsrca.org
>> Subject: Changing Frequencies.....danger??
>>
>>
>> Well I've heard a couple of opinions on this so I
>> figure I'd get some more.
>> I need to get a new frequency for the NATS but don't
>> want to send my
>> transmitter in. I have a Futaba 9C. Some have told
>> me that I can change as
>> many frequencies as I want without mishap, while
>> others have told me that
>> you can only go 6 up or 6 down or else your transmit
>> range gets shorter. Is
>> this true for transmitters with crystals in them
>> only, or for both crystal
>> and module transmitters? If this is also true for
>> module transmitters, then
>> why are there synthesized modules for the 9C?
>>
>> Thanks!
>>
>> Scott
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>
>
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