On 05 Sep 2003 18:54:17 GMT,
(Limitedselection) wrote:

From: "Caveat Lector"

Further should you radiate a very low level signal -- when the 29MHz band
has good nproagation -- you will send even a low level milliwatt signal for
hundreds of miles via "skywave" (skip if you will)

Caveat Lector,

Someone else posted about skywave - I was unaware.

I wouldn't be worried about thelegal issues if skywave was not an issue. But
unfortunately it looks like with skywave any signal no matter how small can be
heard world-wide.

Indeed. There are amateurs that compete to contact every country in
the world on just one Watt or less, believe it or not. Radio is a most
amazingly efficient form of communication. There are differences,
however, between the CB frequencies, which are relatively low, and the
higher ones. CB frequency transmissions, even at very low power, can
go world-wide very readily during and around sunspot maxima. There's
much more to it than an outsider might imagine.
--

"I believe history will be kind to me, since I intend
to write it." - Winston Churchill

On 05 Sep 2003 18:54:17 GMT,
(Limitedselection) wrote:

From: "Caveat Lector"

Further should you radiate a very low level signal -- when the 29MHz band
has good nproagation -- you will send even a low level milliwatt signal for
hundreds of miles via "skywave" (skip if you will)

Caveat Lector,

Someone else posted about skywave - I was unaware.

I wouldn't be worried about thelegal issues if skywave was not an issue. But
unfortunately it looks like with skywave any signal no matter how small can be
heard world-wide.

Indeed. There are amateurs that compete to contact every country in
the world on just one Watt or less, believe it or not. Radio is a most
amazingly efficient form of communication. There are differences,
however, between the CB frequencies, which are relatively low, and the
higher ones. CB frequency transmissions, even at very low power, can
go world-wide very readily during and around sunspot maxima. There's
much more to it than an outsider might imagine.
--

"I believe history will be kind to me, since I intend
to write it." - Winston Churchill

From: (Mike W)
You are talking about the groundwave, think about the skywave.
I can assure you that even a low power jammer will be receivable over
most of the world at some stage or other, depending on propagation
conditions.

Ah, I had not thought of that. Is there any way to ensure that did not happen?
Locating the jammer inside the house?
The angle of the antenna?
Sheilding the jamming device?
Only operating at certain times?

I do NOT want to interfere with any reception (other than my own).

From: "Caveat Lector"

Further should you radiate a very low level signal -- when the 29MHz band
has good nproagation -- you will send even a low level milliwatt signal for
hundreds of miles via "skywave" (skip if you will)

Caveat Lector,

Someone else posted about skywave - I was unaware.

I wouldn't be worried about thelegal issues if skywave was not an issue. But
unfortunately it looks like with skywave any signal no matter how small can be
heard world-wide.

Thanks.

From: "-=jd=-"

Now, I'm sure both my friend and the problem CB'er are both on the wrong
side of the law. I do not endorse either participants behavior and leave
the morality of the activity up to the reader. However, I do think it's
humorous - especially to hear my friend tell it.

JD,
Thanks for the story. I would prefer to use some cheap throw-away little
circuit instead of 'good' equipment though.

An email I received told a story about a guy building a small jamming circuit
and then using a slingshot to launch it onto the target roof. The guy had made
a small parachute (like those little army men toys) to slow it's fall. The
circuit was encased in an egg shaped container (Silly Putty maybe) so it rolled
down and ended up in the rain gutter - where it sat. Apparently the gutter
sheilded the signal from the ground making it nearly impossible to locate the
device. According to the story they were searching for it with field strength
meters and such and never found it - until the next rain ... but by then it was
long dead anyway.

Thanks again.

From: "-=jd=-"

Now, I'm sure both my friend and the problem CB'er are both on the wrong
side of the law. I do not endorse either participants behavior and leave
the morality of the activity up to the reader. However, I do think it's
humorous - especially to hear my friend tell it.

JD,
Thanks for the story. I would prefer to use some cheap throw-away little
circuit instead of 'good' equipment though.

An email I received told a story about a guy building a small jamming circuit
and then using a slingshot to launch it onto the target roof. The guy had made
a small parachute (like those little army men toys) to slow it's fall. The
circuit was encased in an egg shaped container (Silly Putty maybe) so it rolled
down and ended up in the rain gutter - where it sat. Apparently the gutter
sheilded the signal from the ground making it nearly impossible to locate the
device. According to the story they were searching for it with field strength
meters and such and never found it - until the next rain ... but by then it was
long dead anyway.

Thanks again.

Subject: want circuit/schematic for CB "jammer"
From: "Dick Carroll;"

Limited, you're doing a LOT of a ass-uming here!


Dick,
That I am ... I ASSumed that it would not be a problem to ask for this. From a
google search I had done I saw that this did come up from time to time - but
usually the schematic was posted as a jpg - which google does not retain.
Occassionally there was a URL pointing to the location of schematics - but
these all refer to non-existant domains - or non-existant pages now. I ASSumed
that I could just ask and someone might have the information.
Apparently giving this information to someone is a crime according to some of
the replies I have received. Apparently asking for this information is a crime
according to other replies I have received. Apparently even thinking about
this topic is a crime according to some of the replies I have received.

So, to all who I did offend by asking for this information I apologize for my
thought-crime.

Big Brother loves you all.

Subject: want circuit/schematic for CB "jammer"
From: "Dick Carroll;"

Limited, you're doing a LOT of a ass-uming here!


Dick,
That I am ... I ASSumed that it would not be a problem to ask for this. From a
google search I had done I saw that this did come up from time to time - but
usually the schematic was posted as a jpg - which google does not retain.
Occassionally there was a URL pointing to the location of schematics - but
these all refer to non-existant domains - or non-existant pages now. I ASSumed
that I could just ask and someone might have the information.
Apparently giving this information to someone is a crime according to some of
the replies I have received. Apparently asking for this information is a crime
according to other replies I have received. Apparently even thinking about
this topic is a crime according to some of the replies I have received.

So, to all who I did offend by asking for this information I apologize for my
thought-crime.

Big Brother loves you all.

Subject: want circuit/schematic for CB "jammer"
From: donut

(Limitedselection) wrote in
:

I wouldn't be worried about thelegal issues if skywave was not an
issue. But unfortunately it looks like with skywave any signal no
matter how small can be heard world-wide.

This is ridiculous. Try talking skip even on a car CB putting out legal
power. It ain't gonna happen.

Beside, the solar cycle is on it's downward spiral, and skip openings on 29
MHz are going to become few and far between and the cycle deepens.

If your local CBer is primarily a "skip" talker, that in itself might take
him out.





Donut,
Thanks for the info.

I am just looking for a low power, low cost (cheap) and disposable cb jammer
circuit.

A lot of amatuer radio operators and RF engineers are telling me that such a
device could wreak havoc world-wide even though it would be mere mw in power.
According to them 'skywaves' would allow the jammer to reach the entire planet
and jam communications world-wide.

I certainly don't want to jam world-wide communications, so unless someone has
a 'safe' schematic I am out of luck I guess.

Thanks again donut!

A lot of amatuer radio operators and RF engineers are telling me
that such a
device could wreak havoc world-wide

It won't "wreak havoc" world-wide, but it is very likely that it will
be heard on occasions long distances from your location - and it is
illegal. Even if your signal is only heard by your neighbor,
intestinally jamming him is not legal - even if what he is doing is
also not legal. On the technical side, it is just not possible to
generate a signal that will be strong enough to block his on your
property while ensuring that your signal will not leave your property.
It is not technically possible to control signal strengths (especially
given that your talkies will be moving around the property) to the
point that it will block the reception of his signal while letting
your signals through without interference when using the same
frequency.