sombra shdow 3

[Steven Maxwell]

1. The Tx signal recognition algorithm on the Rx analyzes the transmitter
characteristics, it identifies among other things the shift of the Tx,
number of channels, frame rate, etc. From here onwards only frames matching
these characteristics will be allowed to "graduate" to higher levels of
filtering. You can see this in action by performing this simple experiment:
Take two different Tx on the same frequency (e.g one 4ch. The other 7ch.).
Turn one Tx ON and let Shadow register it, now turn the first Tx OFF and
turn the second Tx ON, the second Tx commands will be rejected even though
it operates on the same frequency!. To register the second Tx, Shadow will
have to be power-cycled. We call this basic sanity or transmitter
recognition and Level-1 filtering. 2. Every incoming baseband signal is
continuously sampled and digitized. Our custom and proprietary digital
signal processing algorithms are applied to baseband and valid signals can
be recovered and reconstituted even in extremely noisy environments. We
call this level-2 filtering. Once a frame is processed it is passed to
level-3 filtering. 3. In level-3, we do another set of tests that qualify
the frame further, e.g. the servo output signals in the frame, the proper
sync pulse of a PPM frame, the low and high-phases of each pulse, etc. All
of these have to pass a rigorous qualification test before the signal is
sent out on the servo pins.


> [Original Message]
> From: Terry Terrenoire <amad2terry at juno.com>
> To: <patternrules at earthlink.net>
> Cc: <discussion at nsrca.org>
> Date: 5/19/2005 7:14:40 PM
> Subject: Re: sombra shdow 3
>
> I have one on hand and will be putting it in a plane as soon as it
> arrives. All the ground check have been very promising, so far.
> But, I don't see how it can give you any confidence that someone else
> will not turn on on your freq. if someone elseturns on on your freq, you
> will still lose! This is not the RX that tunes itself  JUST to your TX.
> This RX is programed by setting the channes on an auxilary programmer
> that plugs into the main RX.
>
> Terry T.
>
> On Thu, 19 May 2005 09:08:23 -0500 "Steven Maxwell"
> <patternrules at earthlink.net> writes:
> >  Has anyone used this receiver? One of my big fears, although never 
> > had it
> > happen is to be shot down by a newbie not knowing about frequency 
> > control
> > the last 2 years there was 6 newbie show up at my field on my main
> > frequency, I know I'm a little paranoid, but also in the last 2 
> > years have
> > seen 3 planes shot down from someone not have the frequency pin 
> > luckly the
> > plane lost all times was the guy that didn't have his pin, anyhow 
> > seems
> > like this receiver would give me a little more peice of mind.
> > 
> > 
> > Steven Maxwell
> > patternrules at earthlink.net
> > EarthLink Revolves Around You.
> > 
> > 
> > 
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