Radar Jamming

Harvz · Apr 13, 2005

Has anybody actually made a working radar jammer themself?

TCS · Apr 13, 2005

On Wed, 13 Apr 2005 21:05:25 +0800, Harvz <harvz@softhome.net> wrote:

Has anybody actually made a working radar jammer themself?

Yeah, I keep it next to my SAM battery.

Mark Jones · Apr 13, 2005

Harvz wrote:

Has anybody actually made a working radar jammer themself?

Sure! It's called a Marx generator coupled to a parabolic reflector... also
works well on automobiles with loud stereo systems and any other pesky
electronics.

Ken Taylor · Apr 13, 2005

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrnd5qakc.746.The-Central-Scrutinizer@linux.client.comcast.net...

On Wed, 13 Apr 2005 21:05:25 +0800, Harvz <harvz@softhome.net> wrote:
Has anybody actually made a working radar jammer themself?

Yeah, I keep it next to my SAM battery.

A 12v battery or a 1.5V battery? I find the 9V version buggy. And horse and
whip.

Ken

Rich The Newsgropup Wacko · Apr 13, 2005

On Wed, 13 Apr 2005 21:05:25 +0800, Harvz wrote:

Has anybody actually made a working radar jammer themself?

I repaired a bunch of them when I was in the US Air Force.

If you want to jam radar guns, then I'm afraid you're pretty much
on your own.

You could get a 1KW power inverter, and set an ordinary microwave
oven on your dash with the door ripped off and the interlocks jury-
rigged.
--
Good Luck!
Rich

Harvz · Apr 13, 2005

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

"Mark Jones" <abuse@127.0.0.1> wrote in message
news:upWdnTaAPOzLqMDfRVn-sA@buckeye-express.com...

Harvz wrote:
Has anybody actually made a working radar jammer themself?

Sure! It's called a Marx generator coupled to a parabolic reflector...
also
works well on automobiles with loud stereo systems and any other pesky
electronics.

Jim Thompson · Apr 13, 2005

On Thu, 14 Apr 2005 07:34:03 +0800, "Harvz" <harvz@softhome.net>
wrote:

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

[snip]

You can knock off the BS. I happen to know that radar jamming is VERY
illegal "down under".

Plus we "professionals" don't just hand out potentially-harmful
schematics to illiterates who can't spell or use proper grammar ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice

480)460-2350 | |
| E-mail Address at Website Fax

Pooh Bear · Apr 13, 2005

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

Jim Thompson · Apr 13, 2005

On Thu, 14 Apr 2005 01:10:12 +0100, Pooh Bear
<rabbitsfriendsandrelations@hotmail.com> wrote:

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

480)460-2350 | |
| E-mail Address at Website Fax

Spehro Pefhany · Apr 13, 2005

On Wed, 13 Apr 2005 17:18:08 -0700, the renowned Jim Thompson
<thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 01:10:12 +0100, Pooh Bear
rabbitsfriendsandrelations@hotmail.com> wrote:

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

I understand a 30-06 is effective against photo radar ;-)

...Jim Thompson

Perhaps, but highly inadvisable if it's the manned type.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

Jim Thompson · Apr 13, 2005

On Wed, 13 Apr 2005 20:30:11 -0400, Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote:

On Wed, 13 Apr 2005 17:18:08 -0700, the renowned Jim Thompson
thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 01:10:12 +0100, Pooh Bear
rabbitsfriendsandrelations@hotmail.com> wrote:

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

I understand a 30-06 is effective against photo radar ;-)

...Jim Thompson

Perhaps, but highly inadvisable if it's the manned type.

Best regards,
Spehro Pefhany

480)460-2350 | |
| E-mail Address at Website Fax

Fred Bloggs · Apr 13, 2005

Harvz wrote:

Has anybody actually made a working radar jammer themself?

They are all frauds and do not work. This individual offers a $5000
reward for anyone who can make one:
http://www.radarjammer.com/

Mark Jones · Apr 14, 2005

Harvz wrote:

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

"Mark Jones" <abuse@127.0.0.1> wrote in message
news:upWdnTaAPOzLqMDfRVn-sA@buckeye-express.com...

Harvz wrote:

Has anybody actually made a working radar jammer themself?

Sure! It's called a Marx generator coupled to a parabolic reflector...
also
works well on automobiles with loud stereo systems and any other pesky
electronics.

Hey, I kinda liked my idea. It's novel and just might work!

The technology behind "jamming" a radar signal is no small feat. From the
sounds of it, you just want a schematic and plans to build a $10 way to get out
of speeding tickets. Well, even if you had a schematic, you're still missing the
hardware you need to make it. It's not a simple project, by any means. And when
you try to place an order for microwave components, Big Brother is going to be
watching.

I'd recommend you just not speed. It's much easier, sorry.

Mac · Apr 14, 2005

On Wed, 13 Apr 2005 21:05:25 +0800, Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I have thought about how you would make a spoofer.

You would have separate receive and transmit antennas. The receive antenna
would be fed to a mixer. The other mixer input would be a Doppler shift
frequency you generate according to vehicle speed (that is, it is the
exact amount of Doppler shift you need to send your detected speed down
to 0. Then you low pass filter the mixer output to select the lower
sideband, and send the output of the low pass filter to the transmit
antenna.

In reality, you probably couldn't design a low-pass filter with a sharp
enough cutoff, so you would have to get the lower sideband some other
way. The basic idea is to use a Single Side Band Suppressed Carrier type
of modulation. I'm not a microwave guru, so I would have to go read up on
this stuff a little more before I could say whether this would really work.

And it might be hard to provide sufficient isolation between the transmit
and receive antennas. The system might run off chasing its tail if the
transmit is allowed to feed back into the receive.

Anyway, it's easy to sketch a system out. The devil is in the details. ;-)

--Mac

Keith Williams · Apr 14, 2005

In article <ipbr515adt60u28egqlt1fijsd5qjarjvp@4ax.com>,
thegreatone@example.com says...

On Thu, 14 Apr 2005 07:34:03 +0800, "Harvz" <harvz@softhome.net
wrote:

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

[snip]

You can knock off the BS. I happen to know that radar jamming is VERY
illegal "down under".

Plus we "professionals" don't just hand out potentially-harmful
schematics to illiterates who can't spell or use proper grammar ;-)

On the other hand, were he an illiterate that could spell and use
proper grammar... ;-)

--
Keith

René · Apr 14, 2005

On Thu, 14 Apr 2005 07:34:03 +0800, "Harvz" <harvz@softhome.net>
wrote:

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

Uh-oh..

You mentioned the G-word.

I mentioned guns once to an American crowd, and I think I got away
with it.

Dont mention the guns!

--
- René

Pooh Bear · Apr 14, 2005

Jim Thompson wrote:

On Wed, 13 Apr 2005 20:30:11 -0400, Spehro Pefhany
speffSNIP@interlogDOTyou.knowwhat> wrote:

On Wed, 13 Apr 2005 17:18:08 -0700, the renowned Jim Thompson
thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 01:10:12 +0100, Pooh Bear
rabbitsfriendsandrelations@hotmail.com> wrote:

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

I understand a 30-06 is effective against photo radar ;-)

...Jim Thompson

Perhaps, but highly inadvisable if it's the manned type.

Best regards,
Spehro Pefhany

They've started pole installations around here... damned stupid if you
ask me... in a state where virtually everyone is armed.

...Jim Thompson

Aside from shooting up the box which is what I assume you meant ( no
concept of 30-06's here in the UK - is that a 300 calibre revolver ? ) -
other tactics have been used against radars on poles - like pulling them
down with 4WDs and sawing the pole down ! I believe the citizens of some
countries have even resorted to 'thermite treatment' too - lol !

In Holland IIRC - 'concerned citizens' seek out the mobile radar traps and
post warning signs in advance.

This damn country ( or some of the goddam self appointed do-gooders ) is
fixated by speed radar despite the fact that road fatalities have not
budged as much as a significant inch since their introduction. We get
around 3000 - 3500 ? road fatalities p.a. and have done consistently so
for many years now.

The fact that road deaths is attributable mainly to *lousy driving* seems
to be lost on said goody goodies.

It's a great way of earning extra revenue for the authorities though.

Graham

Pooh Bear · Apr 14, 2005

"René" wrote:

On Thu, 14 Apr 2005 07:34:03 +0800, "Harvz" <harvz@softhome.net
wrote:

GEEEZZZZ!!!!!

i didn't know you yanks were soo woosy!!!! what happened to land of the
free. I just wanted some info... possibly a schematic... its not ilegal down
here in Aus, possibly it is to use it but not to gather information

your alowed guns to shoot people at gas stations or schools but not alowed
to look at plans for a electronic circut

LAND OF THE FREE INDEED!!!!!!!

Uh-oh..
You mentioned the G-word.

I mentioned guns once to an American crowd, and I think I got away
with it.

Dont mention the guns!

Oh c'mon ! It's great fun ! ;-)

Nothing better to see Americans justify their collasally high rate of gun related
mortality. *And* claim that it's somehow a better society for it.

A little while back I caught one of the local regional TV programmes about a US
family that had moved to one of the RAF bases that the US operate here in the UK.
It's like a little community in itself with shops and leisure facilities and
schools ( wow - you have to - what is it ? - salute the flag every morning ? or
is it just swear the oath of allegiance ? - freaky anyway ) so the residents
don't actually *have* to venture out into the real UK even.

When this family did - the wife was 'worried' because the Police *didn't* carry
guns !

I think she missed the point. The Police here don't carry guns because they
*don't need to* !

Graham

Harvz · Apr 14, 2005

Well thanx Mac,
thats all i wanted was some ideas and to see if anyone
had tried it. Not all the BS from these F_cking yanks and their guns, they
can't leave em out of one conversation.....DEPENDENCY!!!!! hehehehehe

"Mac" <foo@bar.net> wrote in message
news

an.2005.04.14.03.35.49.257573@bar.net...

On Wed, 13 Apr 2005 21:05:25 +0800, Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I have thought about how you would make a spoofer.

You would have separate receive and transmit antennas. The receive antenna
would be fed to a mixer. The other mixer input would be a Doppler shift
frequency you generate according to vehicle speed (that is, it is the
exact amount of Doppler shift you need to send your detected speed down
to 0. Then you low pass filter the mixer output to select the lower
sideband, and send the output of the low pass filter to the transmit
antenna.

In reality, you probably couldn't design a low-pass filter with a sharp
enough cutoff, so you would have to get the lower sideband some other
way. The basic idea is to use a Single Side Band Suppressed Carrier type
of modulation. I'm not a microwave guru, so I would have to go read up on
this stuff a little more before I could say whether this would really
work.

And it might be hard to provide sufficient isolation between the transmit
and receive antennas. The system might run off chasing its tail if the
transmit is allowed to feed back into the receive.

Anyway, it's easy to sketch a system out. The devil is in the details.
;-)

--Mac

Keith Williams · Apr 14, 2005

In article <425E1625.D443DDA1@hotmail.com>,
rabbitsfriendsandrelations@hotmail.com says...

Jim Thompson wrote:

On Wed, 13 Apr 2005 20:30:11 -0400, Spehro Pefhany
speffSNIP@interlogDOTyou.knowwhat> wrote:

On Wed, 13 Apr 2005 17:18:08 -0700, the renowned Jim Thompson
thegreatone@example.com> wrote:

On Thu, 14 Apr 2005 01:10:12 +0100, Pooh Bear
rabbitsfriendsandrelations@hotmail.com> wrote:

Harvz wrote:

Has anybody actually made a working radar jammer themself?

No, but I've always fancied equipping a car with extensive ECM.
;-)

Graham

I understand a 30-06 is effective against photo radar ;-)

...Jim Thompson

Perhaps, but highly inadvisable if it's the manned type.

Best regards,
Spehro Pefhany

They've started pole installations around here... damned stupid if you
ask me... in a state where virtually everyone is armed.

...Jim Thompson

Aside from shooting up the box which is what I assume you meant ( no
concept of 30-06's here in the UK - is that a 300 calibre revolver ? ) -

No, it's a .30 calibre (7.62mm) rifle.

other tactics have been used against radars on poles - like pulling them
down with 4WDs and sawing the pole down ! I believe the citizens of some
countries have even resorted to 'thermite treatment' too - lol !

The rifle is easier, and a 30-06 is overkill. A .22LR or perhaps
..22Mag is good enough and doesn't make so much noise.

In Holland IIRC - 'concerned citizens' seek out the mobile radar traps and
post warning signs in advance.

Some have been arrested for doing such, here in leftpondia. Sometimes
the charges even stick.

This damn country ( or some of the goddam self appointed do-gooders ) is
fixated by speed radar despite the fact that road fatalities have not
budged as much as a significant inch since their introduction. We get
around 3000 - 3500 ? road fatalities p.a. and have done consistently so
for many years now.

Sure. Speed-traps aren't safety related, rather are revenue
enhancement devices. FOrtunately, most cops aren't looking for those
going just a bit over. I just drove 1100mi (return trip
Friday/Saturday) at 10+ over and saw at least two dozen "bears", none
even looked at me. They were looking for the >20 crowd, evidently.

The fact that road deaths is attributable mainly to *lousy driving* seems
to be lost on said goody goodies.

When they dropped the speed limit to 55MHP thirty years ago, the
traffic deaths dropped for a while, then climbed back to where they
were. When they raised it back to 65MPH the deaths dropped again.
Last I looked they're still falling.

It's a great way of earning extra revenue for the authorities though.

Bingo! Vermont passed a law so virtually all "revenue" goes to the
state. The result is that localities aren't so interested in radar
traps. ;-)

--
Keith

Radar Jamming

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