On Sep 8, 11:30 pm, " Peter" wrote:
wrote...
On Thu, 06 Sep 2007 08:40:04 -0700, Telstar Electronics
wrote:

On Sep 6, 7:31 am, james wrote:
All audio power does is increase deviation. Using a
compressor on FM just increase average deviation.

Exactly, and I claim that having that increased average
deviation is an advantage on FM.

can you reference a citation to suport that contention (not
sure either way myself

No, Griffter can only give stock, salesman type replies.
You want facts, here you go...

The UK CB system, which we have used for 25 years, has:
10KHz spacing
3KHz typical audio bandwidth
2.5KHz deviation on old sets.
2KHz deviation on recent sets.
The list of UK and EU CB frequencies are he
http://www.citizensband.radiouk.com/...freq/index.php
http://www.citizensband.radiouk.com/...req/eufreq.php

Using Griffter's own reference to prove his lies, Carson's
Rule makes the bandwidth:
11KHz for old spec. sets.
10KHz for new spec. sets.
You can also check this using the Bessel functions...http://en.wikipedia.org/wiki/Frequen...bandwidth_rule

As is obvious, that takes your sidebands clear into the
next channel. The only reason that this is acceptable is
because this is the peak bandwidth, occuring at peaks in
deviation.

The odd short burst of interference caused by a peak can
go unnoticed but, if the whole signal is sat at maximum
deviation, a constant 100% deviation will make it take
that bandwidth constantly.

By increasing the average deviation, he is increasing the
average power contained in the sidebands which fall
within adjacent channels - wiping those channels out.

To receive the signal clearly, it must remain within your
receiver bandwidth - that falling outside will be lost.
Just like with the splatter, you can stand a small amount
of loss on the peaks without too much trouble. Increasing
the average deviation can increase the amount of signal
going beyond this passband, increasing the audio distortion.

His 1% distortion claim goes out the window. Whatever
distortion that increased audio causes within the transmitter
and receiver are additional, add them all together.

In order to stop the continuous problems of adjacent channel
splatter that we suffered, the UK government had to make
changes to the CB specifications...
Deviation reduced.
Receive bandwidth legal requirement.
Unfortunately, this narrow RX bandwidth requirement also
made it easier to get your audio distorted by the receiver.

The Griffter is one of two things:
A fake: Knowing no real facts, simply chanting whatever he
thinks will make the sale.
A lying, cheating scammer: Knowing the true facts, but
purposely lying to make sales.

Personally, I believe he is just a fake, a salesman who will say
anything to sell his outdated product. He picks up the odd
word or phrase, like modulation index or RoHS, and just
chants it in the hope of impressing the living shyte out of
most CB users.
He doesn't really understand the words, theory or how it all
works - he just shouts words to sound like he does. Come back
at him with real facts, and he goes into his standard spam
message as a reply.

Regards,
Peter.

You are nothing more that a "spoiler". You don't have a shred of
evidence for the points you harp on most.
I, on the other hand have a tangible product with many positive
feedback entries on ebay.
Let me guess... you're right... and the whole world's wrong... lol
cheers,
www.telstar-electronics.com