On 7/10/07 6:54 PM, in article ,
"Dana" wrote:


"Don Bowey" wrote in message
...
On 7/10/07 3:26 AM, in article ,
"Jimmie D" wrote:


"Ron Baker, Pluralitas!" wrote in message
...

"Dana" wrote in message
...

"Ron Baker, Pluralitas!" wrote in message
...
Do you understand that a DSB signal *is* AM?

So all the AM broadcasters are wasting money by
generating a carrier?

How did you jump to that conclusion.

Is "DSBSC" DSB?

I see Jimmie talked all around your question.

Actually Jimmie gave a plausable reason to your statement/question that AM
broadcasters are wasting money by generating a carrier.

Actually, he talked about the topic without answering the question asked by
the OP.


I'll answer it AGAIN, though I'm still sure your only a troll.....

DSB says nothing about the carrier; DSBSC is still DSB.

You still have to have a carrier to modulate.

Obviously a reference carrier is required..... So what's your point? "DSB"
tells us NOTHING about the carrier; is it suppressed, reduced, or full in
the transmitted signal?

Maybe you should read an entire post before replying.


You can have DSBSC (Suppressed Carrier), DSBRC (Reduced Carrier), and DSB
with Full Carrier. You can look up the abbreviation for the latter if you
need it.

And you still need to modulate a carrier. So your statement/question that AM
broadcasters are wasting money by generating a carrier was illogical in the
context of this thread.

I did not ever say AM broadcasters are wasting money by generating a
carrier. Get your story straight.

You need a reference carrier for generating sidebands, but you do not "need"
to transmit the carrier unless it's required by a specific service.


Broadcast medium wave radio, slang term "AM Radio," is DSB with full
Carrier.

So then you agree that the Broadcasters are not wasting money by generating
a carrier.

Read the sentence just above your above sentence. A transmitted, full
carrier is required for the broadcast service. Other services don't require
it.



There have been attempts to remove the carrier but receivers could not be
manufatured at a reasonable price that would demodulate the signal with
the
fidelity of an AM BCB signal. Probably could be done today but what would
you l do with all those AM rx that suddenly dont work when the transition
is
made.