On Aug 26, 12:12 am, cmdr buzz corey
wrote:
To get the average modulation to 100% then you have to be
overmodulating.

Absolutely not!
If you hold the modulation right at 100%... guess what the average
is... lol
www.telstar-electronics.com

"Telstar Electronics" wrote in message...

VoiceMax actually doubles the power of any CB by taking
the average modulation to 100%.


You say *any* radio, but you have clearly stated that you are
now aiming this product at the UK market. Can you show that
you can increase FM power by increasing the modulation?
Of course not, FM has a constant carrier level.

Besides which, anything which doubles the power of a
UK CB is ILLEGAL. Any deviation in power is also
illegal - only the frequency or phase may deviate.

People in the UK have previously been fooled by "talk power"
claims from the US of A, not knowing that it does NOT apply
to their FM CBs.
The results were chaos... channels wiped out all over the place.

You should either moderate your claims, allowing for the
FM CB market that you are targeting, or drop the FM market.


Regards,
Peter.

"Telstar Electronics" wrote...

Well... you may be right about the first part... lol
But as far as getting as much swing... that would be a neat trick
with an audio device AGC such as VoiceMax. You see the AGC
holds the modulation up no matter what level the input is...
therefore no swing... just constant maximum modulation output.

Let me get this right...
Modulation without swing... the carrier is AM modulated,
without any "swing" in the output?

No swing, a constant output level. Yet you have AM
modulation... output level swing.


VoiceMax actually doubles the power of any CB

Any CB - even FM CB radios, such as those here in the UK?


by taking the average modulation to 100%.


How does the VoiceMax recognise 100% modulation?
Does it not simply hold it at whatever maximum the person with
the screwdriver sets the radio to? You know, the guy who you
told to crank thre radio up when fitting the VoiceMax.


Regards,
Peter.

On Aug 29, 11:37 pm, " Peter" wrote:
How does the VoiceMax recognise 100% modulation?
Does it not simply hold it at whatever maximum the person with
the screwdriver sets the radio to? You know, the guy who you
told to crank thre radio up when fitting the VoiceMax.

Yes... Voicemax has an adjustable fast-acting limiter. During the set
up (see http://www.telstar-electronics.com/VoiceMax%20B.pdf) this
limiter is adjusted so the output envelope (AM) is at 100% modulation
during speech. On FM... it's obviously the deviation that is set for
the maximum allowable bandwidth. VoiceMax will then hold these levels
from then on... regardless of the speech input level. The one
exception is below the point where the user adjusts the noise-gate
threshold. This is a point... below which the audio is muted
significanly. This is a necessary feature in a very high gain (+60dB)
AGC circuit to eliminate amplifying low level background noise to
limiting levels. So what you end up with is very potent undistorted
audio... with no background hissing. This is extremely effective in a
mobile environment.
www.telstar-electronics.com

On Aug 29, 11:37 pm, " Peter" wrote:
Let me get this right...
Modulation without swing... the carrier is AM modulated,
without any "swing" in the output?

You're catching on. With VoiceMax... once you exceed the noise gate
threshold... the output of the AM(DSB) radio goes from 0% to 100%
modulation while you're speaking. This effectively doubles the output
power and holds it there while above the threshold. Therefore, the
only power shift you would see is when you transition above and below
the noise gate threshold.
www.telstar-electronics.com

"cmdr buzz corey" wrote...
On Aug 25, 7:41 am, "vince" wrote:

No one has actually reviewed it or said they have fitted
it - they only describe how well the package was wrapped
or if it arrived. Show me one person that has fitted the
unit and aligned it correctly using test equipment, then show
the displays on a spectrum analyser and I would like to
see the FM deviation display.

That is far beyond any cber's ability. IF they can get it
installed they will crank everything up to the max to make
sure they get all the "swang" on the meter they can and
splatter across all channels.

There's no swang with FM CB. No swang, no "talk power", no
bandwidth for speech processors... and no point to having one.

FM has a constant carrier level. You cannot see the deviation
on a scope, and very few people here have deviation meters.
That includes CB shops, so there is very little chance that
they will be correctly set to the legal maximum deviation.

With just 10KHz spacing, FM CB is extremely open to distortion
and splatter problems.
Those who do not totally distort or splatter, may well do so on
their peaks. The odd short farting noise may not be a problem,
but what if they are set to a constant max?
Obviously, they will then constantly distort and take out other
channels.

The UK has been there, seen it... and we have the T-shirts
to prove it.

I will not argue with those who whimper on about
"talk power" on AM and SSB, but FM simply does
not work by "talk power".
With FM, getting your voice heard over distance
is NOT done by increasing audio. That just distorts
and splatters.

There is a solution, and it does not use processing or
expensive circuits. I have often used the method to
great effect, at a cost of pennies.
I wonder if the Griff man can educate the group on
this method.
Ah, but wait, if Brian tells us how to do this for pennies,
how will he sell his FM splatter box to people in the UK?


Regards,
Peter.

" Peter" wrote...

Ah, but wait, if Brian tells us how to do this for pennies,
how will he sell his FM splatter box to people in the UK?

Maybe I really could take some lessons from The Griffter.

I have spent years giving people good honest advice,
rather than tell them whatever they need to hear
to part with more cash.


And where has it got me?
I have been refused a job with a retailer, on the basis I
was too honest. As the advert said, they wanted an
"amateur actor" to BS customers.
And then there was the retailer who said that I was
"over-qualified", they were hoping for someone a little
more dumb.

I could even have been an Amateur... but I went and
admitted to having a father.

Speaking of Father; he can lie, cheat, bend reality and
scam his way into anything. I believe that it against his
religion to tell the truth on an application form.
He was once caught out lying in a job application but,
as it was at an estate agents, the unabashed use of the
above methods convinced them that he was the man
for the job.


If only I could be a little more like The Griffter,
maybe I could also live his wonderful lifestyle.
Mmmmm, cheese toasties.


:~)
Peter.