Szczepan Bialek wrote:

"dave" napisal w wiadomosci
m...
On 04/08/2012 09:55 AM, wrote:
Many modern solid state transmitters have no "coils", per se, except
perhaps in the output low pass filter or output matching network. The
carrier is generated from a crystal oscillator (no coils, just caps and a
hunk o' rock) and amplified in broadband stages.


More like a switch mode power supply than a crystal oscillator, (the way I
visualize a modern AM transmitter without large coils.)

Are such used by radio amateurs?
S*

Since you haven't a clue what he is talking about, your question is
meaningless.

Most current, modern transmitters, amateur or otherwise, generate their
carrier frequency through digital frequency synthesizers referenced to
a crystal oscillator.

A small percentage of transmitters that are designed for either fixed
frequency use or use over a limited frequency range just use crystal
oscillators.

The output power is produced by amplifier stages to raise the level to the
desired output.

If there were no regulations, that would be the end of it, but since there
are regulations on spectral purity of transmitters, there are resonant
circuits somewhere before the antenna to ensure no spurious frequencies
are transmitted at a significant level.

Below microwave frequencies the resonant circuits are almost always made
of discreet inductors and capacitors forming either band pass or low pass
filters.

Do you realize you are getting led down the garden path? I've been
following his participation (if you can call it that) in various discussions
for quite some time. I don't think he even as a license. He can almost
always be counted upon to totally disrupt an intelligent thread with
stupid questions and will continue to do so as long as he can suck
in a few responses.

Just ignore him for a while and he'll go away.

Irv VE6BP

wrote in message
...
Szczepan Bialek wrote:

"dave" napisal w wiadomosci
m...
On 04/08/2012 09:55 AM, wrote:
Many modern solid state transmitters have no "coils", per se, except
perhaps in the output low pass filter or output matching network. The
carrier is generated from a crystal oscillator (no coils, just caps and
a
hunk o' rock) and amplified in broadband stages.


More like a switch mode power supply than a crystal oscillator, (the way
I
visualize a modern AM transmitter without large coils.)

Are such used by radio amateurs?
S*

Since you haven't a clue what he is talking about, your question is
meaningless.

Most current, modern transmitters, amateur or otherwise, generate their
carrier frequency through digital frequency synthesizers referenced to
a crystal oscillator.

A small percentage of transmitters that are designed for either fixed
frequency use or use over a limited frequency range just use crystal
oscillators.

The output power is produced by amplifier stages to raise the level to the
desired output.

If there were no regulations, that would be the end of it, but since there
are regulations on spectral purity of transmitters, there are resonant
circuits somewhere before the antenna to ensure no spurious frequencies
are transmitted at a significant level.

Below microwave frequencies the resonant circuits are almost always made
of discreet inductors and capacitors forming either band pass or low pass
filters.

Irv Finkleman wrote:
Do you realize you are getting led down the garden path? I've been
following his participation (if you can call it that) in various discussions
for quite some time. I don't think he even as a license. He can almost
always be counted upon to totally disrupt an intelligent thread with
stupid questions and will continue to do so as long as he can suck
in a few responses.

Just ignore him for a while and he'll go away.

Irv VE6BP

Not being led anywhere.

Our little babbling idiot spent a lot of time on the sci.phyics.* groups
where he was no better than he is here and his reception was a lot less
friendly.

He does not have a license of any kind and apparently not much of an
education of any kind other than skimming historical articles on Wiki.

His contact with the real world and every having seen any modern technology
of any kind also appears to be extremly limited.

Hi is obsessed with historical stuff, primarily dating from the pre-WWI
era.

He is incapable of understanding that any major historical player could
have possibly not fully understood everything and have published something
that later science has shown to be incorrect.

He can not understand that people like Maxwell, Tesla, Edison, etc. had
no access to things that are common today like oscilloscopes, time domain
reflectometers, spectrum analyzers, etc.

In summary, he is a babbling idiot.

The problem is most people when they first encounter him treat him like
an ernest newbee needing help instead of the fixated idiot he is.

Thanks for the support. I was beginning to wonder if I was the
only one thinking of him that way. I don't like to think bad of
anyone, but this guy is just a pest! I hated to see others trying
to explain something to him knowing it would just go to waste.

Irv VE6BP

wrote in message
...
Irv Finkleman wrote:
Do you realize you are getting led down the garden path? I've been
following his participation (if you can call it that) in various
discussions
for quite some time. I don't think he even as a license. He can almost
always be counted upon to totally disrupt an intelligent thread with
stupid questions and will continue to do so as long as he can suck
in a few responses.

Just ignore him for a while and he'll go away.

Irv VE6BP

Not being led anywhere.

Our little babbling idiot spent a lot of time on the sci.phyics.* groups
where he was no better than he is here and his reception was a lot less
friendly.

He does not have a license of any kind and apparently not much of an
education of any kind other than skimming historical articles on Wiki.

His contact with the real world and every having seen any modern
technology
of any kind also appears to be extremly limited.

Hi is obsessed with historical stuff, primarily dating from the pre-WWI
era.

He is incapable of understanding that any major historical player could
have possibly not fully understood everything and have published something
that later science has shown to be incorrect.

He can not understand that people like Maxwell, Tesla, Edison, etc. had
no access to things that are common today like oscilloscopes, time domain
reflectometers, spectrum analyzers, etc.

In summary, he is a babbling idiot.

The problem is most people when they first encounter him treat him like
an ernest newbee needing help instead of the fixated idiot he is.

"Irv Finkleman" wrote in message
...
Thanks for the support. I was beginning to wonder if I was the
only one thinking of him that way. I don't like to think bad of
anyone, but this guy is just a pest! I hated to see others trying
to explain something to him knowing it would just go to waste.

A few of us might recall another guy. I do
Remember his name, but actually mentioning
The name might conjure up his presence.

Usually, he offered some fancilful ideas with
No sound theories to back them up. Some were
Wacky and some were merely odd. He came
In here about twice a month. He has
Not been around for quite some time.

"Sal"
(KD6VKW)

On 4/9/2012 4:03 AM, Szczepan Bialek wrote:
napisal w wiadomosci
m...
On 04/08/2012 09:55 AM, wrote:
Many modern solid state transmitters have no "coils", per se, except
perhaps in the output low pass filter or output matching network. The
carrier is generated from a crystal oscillator (no coils, just caps and a
hunk o' rock) and amplified in broadband stages.


More like a switch mode power supply than a crystal oscillator, (the way I
visualize a modern AM transmitter without large coils.)

Are such used by radio amateurs?
S*

On 4/9/2012 4:03 AM, Szczepan Bialek wrote:
napisal w wiadomosci
m...
On 04/08/2012 09:55 AM, wrote:
Many modern solid state transmitters have no "coils", per se, except
perhaps in the output low pass filter or output matching network. The
carrier is generated from a crystal oscillator (no coils, just caps and a
hunk o' rock) and amplified in broadband stages.


More like a switch mode power supply than a crystal oscillator, (the way I
visualize a modern AM transmitter without large coils.)

Are such used by radio amateurs?
S*



Why don't you tell us? You are the expert. Google and Wikipedia are
your friend.

tom
K0TAR

"Irv Finkleman" napisa³ w wiadomo¶ci
...
Do you realize you are getting led down the garden path? I've been
following his participation (if you can call it that) in various
discussions
for quite some time. I don't think he even as a license.

A few days ago i wrote:
" I have never seen a transmitter (even that in a mobile phone).
S*

He can almost
always be counted upon to totally disrupt an intelligent thread with
stupid questions and will continue to do so as long as he can suck
in a few responses.

I asked:
"Tesla coil circuits were used commercially in sparkgap radio transmitters
for wireless telegraphy until the 1920s,[1"
From: http://en.wikipedia.org/wiki/DRSSTC

But in 1929 was wrote: "It is not generally appreciated that this curious
apparatus, often associated with pretty or spectacular demonstrations of
high voltage electricity, is really a fundamental part of modern radio. For
all the tuning apparatus and circuits in every transmitting and receiving
set are simply variations of Tesla coils and Tesla coil circuits".
From: http://www.tfcbooks.com/tesla/1929-09-22.htm

Now is 2012. Is " this curious apparatus" the "fundamental part of modern
radio"? Of course in form of the " variations of Tesla coils and Tesla
coil circuits".
S* "

Now I know the opinions of radio amateurs.

Just ignore him for a while and he'll go away.

Sometimes I must ask the experts.
What is wrong in that?
S*

On Apr 9, 1:00*pm, wrote:
He can not understand that people like Maxwell, Tesla, Edison, etc. had
no access to things that are common today like oscilloscopes, time domain
reflectometers, spectrum analyzers, etc.

Not to mention modern quantum electrodynamics theory.
--
73, Cecil, w5dxp.com

Szczepan Bialek wrote:


Now is 2012. Is " this curious apparatus" the "fundamental part of modern
radio"? Of course in form of the " variations of Tesla coils and Tesla
coil circuits".
S* "

Asked and answered.

NO.

Tesla coils have not been part of ANY transmitter built since before WWII.

Tesla coils have not been part of ANY transmitter built since before WWII.

Tesla coils have not been part of ANY transmitter built since before WWII.

Sometimes I must ask the experts.
What is wrong in that?
S*

You are a babbling idiot and can't understand a simple answer even if it
is spoon fed to you.