"Telstar Electronics" wrote...

You are nothing more that a "spoiler".

Ah, Diddums... having his scam spoiled.

You don't have a shred of evidence for the points you
harp on most.

I realise that all the spamming must make you tired, but
do try to keep your eyes open...

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
What, my word not good enough? Try the official Ofcom
list he
http://www.ofcom.org.uk/radiocomms/i...binfosheet.pdf
The MPT1382 UK CB legal specifications are he

http://64.233.183.104/search?q=cache...ublication/mpt
/mpt_docs/1382newh.doc+MPT+1382&hl=en&ct=clnk&cd=1&gl=uk

FM, bandwidth and Bessel functions are he
http://en.wikipedia.org/wiki/Frequency_modulation
An easy, rough guide bandwidth calculation is he
http://en.wikipedia.org/wiki/Carson_bandwidth_rule

The evidence is there, simply use the above to calculate
the bandwidth of UK FM CB.
It's not rocket surgery, Brian. If you really are the
tech. you claim to be, the problems with speech processing
on NBFM CB radio should be damn obvious.

I'll give you a clue, using Carson's rule...
FM Bandwidth = 2(Fd+Fm):
= 2(2.5KHz + 3KHz)
= 2(5.5KHz)
= 11KHz bandwidth requirement.

Now look at the frequency charts (or the MPT1382 spec)...
11KHz takes your signal right through each adjacent
channel bandwidth.

As the 2KHz deviation is the maximum allowed (the old
spec radios, MPT1320, are 2.5KHz), this is only the
bandwidth at your audio peaks.
But, according to you, your product is designed to hold
the modulation at this peak level - so that bandwidth
will be required continuously.

Now consider the receive bandwidth of a UK FM CB (legal
requirement, stated in the MPT1382 link above)... 60dB adjacent
channel rejection.
Those sidebands, while directly in the bandwidth of anyone
on the adjacent channel, should be greatly attenuated by a
legal specification UK CB.
That explains both the distortion and splatter that can be
heard on a regular basis on UK FM CB.


So, how about the legal position of your product within
the UK?
First of all, you have still not confirmed whether it
complies with our RoHS requirements. If not, then
it is illegal to place it on the market here.

Now, use on CB:
The legal requirements, MPT1382 (link above), state that:
5.2.5 Adjacent channel power
The adjacent channel power shall not exceed
a value of 20 microwatts.

The adjacent channel power is defined in section 8.5.2.
This states 5.75KHz from the carrier, making the it
(for legal purposes) the average power contained in
the top end of the 2nd sideband plus all the power
in the sidebands above that.

By increasing the average audio, you increase the
average power in the sidebands. This is basic stuff.
This guy states it in his sales pitch...
http://www.spectrumcomms.co.uk/cbkits.htm#SP1000
Notice, also, that he states SSB and AM use - he does
NOT promote it for FM CM use. If he considered it
suitable for UK FM CB, he would say so - he has been
selling to UK CBers and CB dealers for years.

Your product can take a UK FM CB beyond the legal
specification, making it illegal to use and possibly
subject to seizure by Ofcom. There may also now
be on-the-spot fines.

There are reasons for this average adjacent power
specification, and I already gave them... occasional
short bursts onto the adjacent channel may go
unnoticed, but a high average or constant 3rd and
4th sideband content can cause serious problems.


I, on the other hand have a tangible product with
many positive feedback entries on ebay.

Sure, Acorah can speak to the dead, Blaine can fly,
and Angel can take a woman and pull her in half... all
proved by the feedback of witnesses.
Oh yes, and strap a magnet to your car fuel-line, and
your fuel consumption will be greatly reduced.
How about magnetic cups, proved to cure diseases my
"charging" the water particles.

Clearly, feedback is not reliable enough to be considered
"proof". How about some scientific facts? How about
proving that the last 26 years of UK FM CB never really
happened.

and the whole world's wrong...

That, like all your other posts, is a load of misleading
bull droppings. You do NOT have "the whole world"
agreeing with you. The "whole world" has not tried
your SplatterMax on FM CB.

Someone only has to look at the messages in this group
to see that many disagree. It wasn't me who called your
product "garbage" or made suggestions about basket
weaving. I only state that your product is not suitable
for FM CB... many other people are rather more critical
of you and your product.

Everyone who has used FM CB in the UK for some years
will know that distortion and adjacent channel splatter
are a real problem.
Those using the products may not realize, they cannot
hear the crap they are putting out.


Regards,
Peter.