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

(Limitedselection) wrote in
:

Thanks - Mike posted about sky waves (I was unaware of), so even a
very low power device centrally located in my property would
apparently be heard world-wide - which is NOT what I want.

I hardly think this would be a problem. For one, you'd need an antenna
radiating a large proportion of skywave. Second, the CB bands are loaded
with all kinds of open carriers, whistlers, music players, etc. so your
tiny part in this would be unlikely to harm anyone.


Donut,
Thanks for the info. Earlier someone suggested using a mobile CB with a car
battery and a magnet antenna and a garbage bag - and placing this as close to
the neighbor antenna as possible.
I think building a low-power jammer and placing it close to his antenna would
be a better solution. Less expensive and totally disposable.
You are one of the few people on Earth (well, at least on usenet - on usenet so
far since I posted yesterday) that seems to think that this would be relatively
harmless. Other people are equating asking for a jammer schematic to asking
for information on manufacturing chemical/biological/nuclear weapons (it
probably sounds like I am kidding about this - but I am NOT).
Thank you for your rational/calm approach to this!


Anything you might do to jam this CBer (like an oscillator to transmit an
OC) would also jam the walkie talkies.

1. Change the channel the walkie talkies operate on, or

2. Replace them with walkie talkies using another band. I believe there are
walkies talkies that also operate around 49 MHz.

At this point I am still looking for LOW POWER jammer schematics. Although
someone told me that some are on the way.
Thank you for your information though, I appreciate it.

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

(Limitedselection) wrote in
:

Thanks - Mike posted about sky waves (I was unaware of), so even a
very low power device centrally located in my property would
apparently be heard world-wide - which is NOT what I want.

I hardly think this would be a problem. For one, you'd need an antenna
radiating a large proportion of skywave. Second, the CB bands are loaded
with all kinds of open carriers, whistlers, music players, etc. so your
tiny part in this would be unlikely to harm anyone.


Donut,
Thanks for the info. Earlier someone suggested using a mobile CB with a car
battery and a magnet antenna and a garbage bag - and placing this as close to
the neighbor antenna as possible.
I think building a low-power jammer and placing it close to his antenna would
be a better solution. Less expensive and totally disposable.
You are one of the few people on Earth (well, at least on usenet - on usenet so
far since I posted yesterday) that seems to think that this would be relatively
harmless. Other people are equating asking for a jammer schematic to asking
for information on manufacturing chemical/biological/nuclear weapons (it
probably sounds like I am kidding about this - but I am NOT).
Thank you for your rational/calm approach to this!


Anything you might do to jam this CBer (like an oscillator to transmit an
OC) would also jam the walkie talkies.

1. Change the channel the walkie talkies operate on, or

2. Replace them with walkie talkies using another band. I believe there are
walkies talkies that also operate around 49 MHz.

At this point I am still looking for LOW POWER jammer schematics. Although
someone told me that some are on the way.
Thank you for your information though, I appreciate it.

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!

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!

Have you concidered the DS1086 Spread Spectrum Econoscillator from
dallas Semiconductors.
A programmable Oscillator ( between 260Khz and 130Mhz ) with a
selectable 'dither' of either 2% or 4% ) powered from a few AA cells
would last a very long time and would sit nicely in the grass by the
CBers Aerial and clutter up his comms very effectivly ;-)

Very Tongue in cheek... Mike W
--

On 06 Sep 2003 07:31:53 GMT,
(Limitedselection) wrote:

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

(Limitedselection) wrote in
:

Thanks - Mike posted about sky waves (I was unaware of), so even a
very low power device centrally located in my property would
apparently be heard world-wide - which is NOT what I want.

I hardly think this would be a problem. For one, you'd need an antenna
radiating a large proportion of skywave. Second, the CB bands are loaded
with all kinds of open carriers, whistlers, music players, etc. so your
tiny part in this would be unlikely to harm anyone.


Donut,
Thanks for the info. Earlier someone suggested using a mobile CB with a car
battery and a magnet antenna and a garbage bag - and placing this as close to
the neighbor antenna as possible.
I think building a low-power jammer and placing it close to his antenna would
be a better solution. Less expensive and totally disposable.
You are one of the few people on Earth (well, at least on usenet - on usenet so
far since I posted yesterday) that seems to think that this would be relatively
harmless. Other people are equating asking for a jammer schematic to asking
for information on manufacturing chemical/biological/nuclear weapons (it
probably sounds like I am kidding about this - but I am NOT).
Thank you for your rational/calm approach to this!


Anything you might do to jam this CBer (like an oscillator to transmit an
OC) would also jam the walkie talkies.

1. Change the channel the walkie talkies operate on, or

2. Replace them with walkie talkies using another band. I believe there are
walkies talkies that also operate around 49 MHz.

At this point I am still looking for LOW POWER jammer schematics. Although
someone told me that some are on the way.
Thank you for your information though, I appreciate it.

Have you concidered the DS1086 Spread Spectrum Econoscillator from
dallas Semiconductors.
A programmable Oscillator ( between 260Khz and 130Mhz ) with a
selectable 'dither' of either 2% or 4% ) powered from a few AA cells
would last a very long time and would sit nicely in the grass by the
CBers Aerial and clutter up his comms very effectivly ;-)

Very Tongue in cheek... Mike W
--

On 06 Sep 2003 07:31:53 GMT,
(Limitedselection) wrote:

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

(Limitedselection) wrote in
:

Thanks - Mike posted about sky waves (I was unaware of), so even a
very low power device centrally located in my property would
apparently be heard world-wide - which is NOT what I want.

I hardly think this would be a problem. For one, you'd need an antenna
radiating a large proportion of skywave. Second, the CB bands are loaded
with all kinds of open carriers, whistlers, music players, etc. so your
tiny part in this would be unlikely to harm anyone.


Donut,
Thanks for the info. Earlier someone suggested using a mobile CB with a car
battery and a magnet antenna and a garbage bag - and placing this as close to
the neighbor antenna as possible.
I think building a low-power jammer and placing it close to his antenna would
be a better solution. Less expensive and totally disposable.
You are one of the few people on Earth (well, at least on usenet - on usenet so
far since I posted yesterday) that seems to think that this would be relatively
harmless. Other people are equating asking for a jammer schematic to asking
for information on manufacturing chemical/biological/nuclear weapons (it
probably sounds like I am kidding about this - but I am NOT).
Thank you for your rational/calm approach to this!


Anything you might do to jam this CBer (like an oscillator to transmit an
OC) would also jam the walkie talkies.

1. Change the channel the walkie talkies operate on, or

2. Replace them with walkie talkies using another band. I believe there are
walkies talkies that also operate around 49 MHz.

At this point I am still looking for LOW POWER jammer schematics. Although
someone told me that some are on the way.
Thank you for your information though, I appreciate it.

I'm still confued. You want to keep from HEARING CB signals at YOUR
house? Why not just turn power off to your CB?

Scott
N0EDV

Limitedselection wrote:

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).

--

Scott
http://corbenflyer.tripod.com
http://groups.yahoo.com/group/ParasolAirplanes
Building RV-4
Gotta Fly or Gonna Die!

I'm still confued. You want to keep from HEARING CB signals at YOUR
house? Why not just turn power off to your CB?

Scott
N0EDV

Limitedselection wrote:

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).

--

Scott
http://corbenflyer.tripod.com
http://groups.yahoo.com/group/ParasolAirplanes
Building RV-4
Gotta Fly or Gonna Die!

The only problem with that is that CB is AM. As all pilots know, when
two AM transmitters come on frequency, you end up hearing both (and if
one is a bit off frequency, a loud squeal as well). FM has the "capture"
effect where you only hear the strongest one (ideally).

Scott
N0EDV

Roy Lewallen wrote:

Hm, that is an interesting problem. The trick would be to have a signal
that's always considerably stronger at the walkie-talkies than the
CBer's, regardless of where they might be in the house or on the
property, but always considerably weaker than the signal from the other
walkie-talkie. That won't be easy, if it's possible at all. Your best
shot would be to use another walkie-talkie, because it would be directly
radiating on the right frequency. It'd also be legal, for what that's
worth to you. You'd need to reduce its signal output by shielding,
cutting down the antenna, reducing the battery voltage, or some other
means like stringing ferrite cores over the antenna. But I wouldn't bet
on its accomplishing what you're trying to do, unless the CB
interference is pretty weak. Reducing the walkie-talkie receiver
sensitivity is another option, if the receiver is separately accessible
internally and you know enough about such things to do it. But I think
the best idea, suggested by another poster, is to contact the FCC. The
law can, occasionally, be used to your advantage.

Roy Lewallen, W7EL

Limitedselection wrote:
Roy,
Thanks - Mike posted about sky waves (I was unaware of), so even a very low
power device centrally located in my property would apparently be heard
world-wide - which is NOT what I want.

Actually, I did want to jam the reception of the existing CB signals on my
property (at least in and around the house).

One of my neighbors uses rather 'salty' language and the local kids use some
walkie talkies around the house - I fugured that jamming the outside signals
would still allow the kids to talk due to their close proximity.

Thanks again.


From: Roy Lewallen


There's no way to make a signal stop at your property line, short of
putting a perfect shield around your property. And if you did that, you
wouldn't be bothered by your neighbor's CB anyway.




--

Scott
http://corbenflyer.tripod.com
http://groups.yahoo.com/group/ParasolAirplanes
Building RV-4
Gotta Fly or Gonna Die!

The only problem with that is that CB is AM. As all pilots know, when
two AM transmitters come on frequency, you end up hearing both (and if
one is a bit off frequency, a loud squeal as well). FM has the "capture"
effect where you only hear the strongest one (ideally).

Scott
N0EDV

Roy Lewallen wrote:

Hm, that is an interesting problem. The trick would be to have a signal
that's always considerably stronger at the walkie-talkies than the
CBer's, regardless of where they might be in the house or on the
property, but always considerably weaker than the signal from the other
walkie-talkie. That won't be easy, if it's possible at all. Your best
shot would be to use another walkie-talkie, because it would be directly
radiating on the right frequency. It'd also be legal, for what that's
worth to you. You'd need to reduce its signal output by shielding,
cutting down the antenna, reducing the battery voltage, or some other
means like stringing ferrite cores over the antenna. But I wouldn't bet
on its accomplishing what you're trying to do, unless the CB
interference is pretty weak. Reducing the walkie-talkie receiver
sensitivity is another option, if the receiver is separately accessible
internally and you know enough about such things to do it. But I think
the best idea, suggested by another poster, is to contact the FCC. The
law can, occasionally, be used to your advantage.

Roy Lewallen, W7EL

Limitedselection wrote:
Roy,
Thanks - Mike posted about sky waves (I was unaware of), so even a very low
power device centrally located in my property would apparently be heard
world-wide - which is NOT what I want.

Actually, I did want to jam the reception of the existing CB signals on my
property (at least in and around the house).

One of my neighbors uses rather 'salty' language and the local kids use some
walkie talkies around the house - I fugured that jamming the outside signals
would still allow the kids to talk due to their close proximity.

Thanks again.


From: Roy Lewallen


There's no way to make a signal stop at your property line, short of
putting a perfect shield around your property. And if you did that, you
wouldn't be bothered by your neighbor's CB anyway.




--

Scott
http://corbenflyer.tripod.com
http://groups.yahoo.com/group/ParasolAirplanes
Building RV-4
Gotta Fly or Gonna Die!