[NSRCA-discussion] SPECKTRUM Modules for Futaba and JR

[Tony Stillman]

Jon:
They don't have to be in the air!  Just take something like the Joe Nall
event for example.  No frequency pins for DSS.  It would be VERY easy to
have 40 systems on at the same time!  Some playing with foamies, some
adjusting models and some getting ready to fly.  You could be at the flight
line to fly, turn on and find that the system will not operate because all
the 2.4 channels are in use!  That is why there needs to be frequency pins
for DSS and you should not turn them on when you are not in possession of a
pin.  No, you won't cause a crash, but you could fill up the band!

 

 

Tony Stillman, President

Radio South

3702 N. Pace Blvd

Pensacola, FL 32505

1-800-962-7802

www.radiosouthrc.com

 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
JonLowe at aol.com
Sent: Thursday, February 22, 2007 9:26 PM
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] SPECKTRUM Modules for Futaba and JR

 

In a message dated 2/22/2007 6:52:04 PM Central Standard Time,
patterndude at tx.rr.com writes:

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?

--Lance

 

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.

 

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.

 

I don't want to be at a field that has 40 airplanes in the air at once!

 

Jon Lowe





  _____  

AOL now offers free email to everyone. Find out more about what's free from
AOL at
<http://pr.atwola.com/promoclk/1615326657x4311227241x4298082137/aol?redir=ht
tp%3A%2F%2Fwww%2Eaol%2Ecom> AOL.com.




**************************************
AOL now offers free email to everyone. Find out more about what's free from
AOL at http://www.aol.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20070223/c5f9e680/attachment.html