duckman wrote:

Had a question for open discussion

Is there available, can it be done to have an AM and/ and or FM transmitter
that will broadcast over the entire AM and FM broadcast band at the same
time. Or at least multiple stations. E.G.

From 88 - 108 at once or 88-98, then 98-108
Same on AM band.

It would have to be a low power to be able to be used on private property
and limiy range to 300 mtrs

Can this be done, where can l buy it, or how do l make it

Told you it was a dousy of a question, whats your thoughts.

Not with a single transmitter. You could build a comb generator and
modulate it for AM, but the quality would be poor For FM you either need
separate transmitters, or modulate the signal and mix it with a separate
oscillator for each channel. The big question is why you would want to
do it.
--
17 days!


Michael A. Terrell
Central Florida

duckman wrote:
Had a question for open discussion

Is there available, can it be done to have an AM and/ and or FM transmitter
that will broadcast over the entire AM and FM broadcast band at the same
time. Or at least multiple stations. E.G.

From 88 - 108 at once or 88-98, then 98-108
Same on AM band.

It would have to be a low power to be able to be used on private property
and limiy range to 300 mtrs

Can this be done, where can l buy it, or how do l make it

Told you it was a dousy of a question, whats your thoughts.

Conceptually, you're describing something similar to
ODFM, used in 802.11(a) and (g). Basically, you create
numerous independently modulated carriers across a band,
combine them and amplify them. If you're intent on
transmitting the same information on each carrier, then I
suppose a simplifying trick might be to produce a comb,
but the general case is basically identical to something
that exists already.

Now, here's a question that follows - suppose you built
an ODFM transmitter that was able to place a signal on
each 'channel' in the FM broadcast band. What could
power-level/signal-strength would be permitted under
Part 15? Would the aggregate ODFM signal be considered a
single signal for Part 15 purposes, or would each 'channel'
be considered an independent signal (since, technically, it
is)?


Dana

This needs clarification. Do you mean that it will generate multiple
carriers? Like this?

At the same time the output has carriers @ 88.1 and 88.3 and 88.5 and
88.7.....97.5 and 97.7 and 97.9 ????

Actually this is possible if you
can make the proper circuitry. An oscillator FM modulated with a 200 KHz
signal will do it. You just need enough deviation. You could also add in
the audio modulation.

Forgot to mention that I've done it.

Steve

k;9;d;c;i

"duckman" wrote in message
...
Had a question for open discussion

Is there available, can it be done to have an AM and/ and or FM
transmitter
that will broadcast over the entire AM and FM broadcast band at the same
time. Or at least multiple stations. E.G.

From 88 - 108 at once or 88-98, then 98-108
Same on AM band.

It would have to be a low power to be able to be used on private property
and limiy range to 300 mtrs

Can this be done, where can l buy it, or how do l make it

Told you it was a dousy of a question, whats your thoughts.

duckman wrote:
Had a question for open discussion

Is there available, can it be done to have an AM and/ and or FM transmitter
that will broadcast over the entire AM and FM broadcast band at the same
time. Or at least multiple stations. E.G.

From 88 - 108 at once or 88-98, then 98-108
Same on AM band.

It would have to be a low power to be able to be used on private property
and limiy range to 300 mtrs

Can this be done, where can l buy it, or how do l make it

Told you it was a dousy of a question, whats your thoughts.

Conceptually, you're describing something similar to
ODFM, used in 802.11(a) and (g). Basically, you create
numerous independently modulated carriers across a band,
combine them and amplify them. If you're intent on
transmitting the same information on each carrier, then I
suppose a simplifying trick might be to produce a comb,
but the general case is basically identical to something
that exists already.

Now, here's a question that follows - suppose you built
an ODFM transmitter that was able to place a signal on
each 'channel' in the FM broadcast band. What could
power-level/signal-strength would be permitted under
Part 15? Would the aggregate ODFM signal be considered a
single signal for Part 15 purposes, or would each 'channel'
be considered an independent signal (since, technically, it
is)?


Dana

This needs clarification. Do you mean that it will generate multiple
carriers? Like this?

At the same time the output has carriers @ 88.1 and 88.3 and 88.5 and
88.7.....97.5 and 97.7 and 97.9 ????

Actually this is possible if you
can make the proper circuitry. An oscillator FM modulated with a 200 KHz
signal will do it. You just need enough deviation. You could also add in
the audio modulation.

Forgot to mention that I've done it.

Steve

k;9;d;c;i

"duckman" wrote in message
...
Had a question for open discussion

Is there available, can it be done to have an AM and/ and or FM
transmitter
that will broadcast over the entire AM and FM broadcast band at the same
time. Or at least multiple stations. E.G.

From 88 - 108 at once or 88-98, then 98-108
Same on AM band.

It would have to be a low power to be able to be used on private property
and limiy range to 300 mtrs

Can this be done, where can l buy it, or how do l make it

Told you it was a dousy of a question, whats your thoughts.

duckman wrote:
something suspicious

I've been to about 5 different radio related groups this morning lurking
for information about a problem I have in a similar field to this duckman
guy, and (1) his request has been -- identically worded, if not mistaken
-- in each of the groups I've read, a couple related to pirate radio, a
couple related to professional broadcast radio, and a couple related to
ham radio. What gives?

Anywhoo, I've got a similar question I post shortly.

I know someone who has a desire for a piece of equipment that does the
same thing, but his reasoning is for people who blast their radios while
going down the street. It would be merely for shutting them up -- after
all, the person blaring the radio is usually the only one who wants to
hear it.

Anyway, 73 de KE4EDD

--
__ ____
/ _| | _ \ Unregistered Linux User #18,000,002
| |__ | _ \
\__/ |___/ Learning is the ONLY substitution for EDUCATION!

Ah YES..... I'd LOVE to come up with a device to blow out those extra loud
car systems. HOW RIDICULOUS they are. Aside from such a device, the next
good idea is invest in any companies making hearing aids. They WILL be
JUMPING IN STOCK in about 5 years. Any names come to mind? I'd like to start
looking. G.W.


"Circuit Breaker" wrote in message
news
I know someone who has a desire for a piece of equipment that does the
same thing, but his reasoning is for people who blast their radios while
going down the street. It would be merely for shutting them up -- after
all, the person blaring the radio is usually the only one who wants to
hear it.

Anyway, 73 de KE4EDD

Ghost Writer wrote:

Ah YES..... I'd LOVE to come up with a device to blow out those extra loud
car systems. HOW RIDICULOUS they are. Aside from such a device, the next
good idea is invest in any companies making hearing aids. They WILL be
JUMPING IN STOCK in about 5 years. Any names come to mind? I'd like to start
looking. G.W.

;-) Google for: hearing aid "Mel Tillis"

--
__ ____
/ _| | _ \ Unregistered Linux User #18,000,002
| |__ | _ \
\__/ |___/ Learning is the ONLY substitution for EDUCATION!

Ghost Writer wrote:

Ah YES..... I'd LOVE to come up with a device to blow out those extra loud
car systems. HOW RIDICULOUS they are. Aside from such a device, the next
good idea is invest in any companies making hearing aids. They WILL be
JUMPING IN STOCK in about 5 years. Any names come to mind? I'd like to start
looking. G.W.

;-) Google for: hearing aid "Mel Tillis"

--
__ ____
/ _| | _ \ Unregistered Linux User #18,000,002
| |__ | _ \
\__/ |___/ Learning is the ONLY substitution for EDUCATION!

Ah YES..... I'd LOVE to come up with a device to blow out those extra loud
car systems. HOW RIDICULOUS they are. Aside from such a device, the next
good idea is invest in any companies making hearing aids. They WILL be
JUMPING IN STOCK in about 5 years. Any names come to mind? I'd like to start
looking. G.W.


"Circuit Breaker" wrote in message
news
I know someone who has a desire for a piece of equipment that does the
same thing, but his reasoning is for people who blast their radios while
going down the street. It would be merely for shutting them up -- after
all, the person blaring the radio is usually the only one who wants to
hear it.

Anyway, 73 de KE4EDD