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<DIV>Actually there is a difference between the Spektrum and the Futaba FASST.
The Spektrum chooses its channel(frequency) when you turn it on and stays there
as long as you keep it powered up. The next time you turn it back on it may
select a different frequency. The Futaba system constantly changes (every 2
milliseconds I believe). As Jon pointed out, you don't really care what it
chooses. There are advantages / disadvantages to both systems - as I'm sure
we'll soon find out. Keep in mind there's now a LOT of stuff in the 2.4GHz band.
Toy airplanes aren't the only thing. In theory this should all work great,
but...</DIV>
<DIV> </DIV>
<DIV>John Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A></DIV>
<DIV> </DIV>
<DIV>BTW - I have written code for some Freescale MCUs that are running hardware
on the 2.4 GHz band (using Freescale's SMAC). If you think this is a magic,
foolproof transport medium, boy have I got some stories for you...
<LOL></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=JonLowe@aol.com href="mailto:JonLowe@aol.com">JonLowe@aol.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, February 22, 2007 10:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] SPECKTRUM
Modules for Futaba and JR</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>
<DIV>In a message dated 2/22/2007 6:52:04 PM Central Standard Time, <A
href="mailto:patterndude@tx.rr.com">patterndude@tx.rr.com</A> writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid">
<DIV><FONT face=Arial size=2>What does Spectral capacity - 40 systems
mean? Is this the number of tranmitters that can operate in range of
each other, or is this 40 channels or what?</FONT></DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV></BLOCKQUOTE></DIV>
<DIV>This is grossly simplified, but the 2.4 ghz band has about 80
frequencies. Each Spektrum unit picks two unused frequencies and
transmits on both. 80/2=40 transmitters that can operate at once.
It is a requirement of the FCC that things on this band don't interfere with
each other, and transmitter power is strictly regulated, therefore anything
using the band has to check before transmitting. You have no idea which
two frequencies you are on (nor do you care), as they change each time the
transmitter turns on.</DIV>
<DIV> </DIV>
<DIV>I've flown my Dad's Arresti III with the DX7 extensively.
Absolutely solid link, with no fear of getting shot down. I have been
waiting for something like the modules so I could use a decent
transmitter for things like throttle curves, conditional mixes, etc.</DIV>
<DIV> </DIV>
<DIV>I don't want to be at a field that has 40 airplanes in the air at
once!</DIV></DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Jon Lowe<BR></FONT></DIV><BR><BR><BR>
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