Could this device be built?

[John Larkin]

OK, now you have some switched power, what generates the RF?

Switched power *is* RF!

John

 

[JosephKK]

Arny Krueger [email protected] posted to sci.electronics.design:

10.4 * 10**6 * 6 * 10**-6 = 62.4 watts average power.

Hawk 2nd generation tracking HPIR CW RADAR AN/MPQ 39 power seems
to have
not yet been revealed publicly. It has been publicly stated that
the AN/MPQ 39 power output level exceeded that of the earlier
AN/MPQ 33, which was 125
watts. This is a vast understatement!

AN/SPG-51 and AN/SPG-53 tracking / target illumination radars
were/are rated at 22.5 kW continuous and 35 kW continuous. They
were real good at knocking birds out of the sky.

 

[JosephKK]

[email protected] [email protected] posted to
sci.electronics.design:

In sci.physics John Larkin





A gigawatt at what pulse repetition rate; 1 pulse per hour?

It may be near a gigawatt ERP, but I doubt that's watts RF into
the antenna.

I'd also like to know what you'd use for waveguide at those power
levels. It's hard enough to keep moderate megawatts contained and
the waveguide in one piece.

What waveguides? The emitter is a phased array antenna; 300,000
phase synchronized small sources.

 

[JosephKK]

Michael A. Terrell [email protected] posted to
sci.electronics.design:

Wimp! Be a man and use a M-72. Does wonders to touch up those
cheesy
flame paint jobs on their rust buckets, too.


--
Service to my country? Been there, Done that, and I've got my
DD214 to prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Naw, poor effective range and too much collateral damage. Try an
M-60 instead.

 

[JosephKK]

Paul E. Schoen [email protected] posted to sci.electronics.design:

I saw a device called "The Mosquito", that emits high frequency
audio noise that can be heard by most young people, and not so
much by more mature adults. These devices can be installed where
these punks hang out, and eventually they find it irritating
enough to move on to some other place. Probably such a device with
power great enough, and a focused speaker, could be directed at
the miscreant and make him very uncomfortable.

Another possibility is a similar focused sound transmitter that
would very loudly play Opera, or Polka. Even better, mix the two
together and really scramble the few remaining brain cells of the
offender. Have an automatic volume control to set the transmitted
sound level to be proportional to that detected. Probably 140 db
of Kathleen Battle and Happy Louie would do the job. And be at
least as legal as the offender's subwoofer.

But I'd also want to have backup from my buddies Smith and Wesson!

Paul

Nice idea. My friends Colt, Ithaca, and Winchester are real
comfortable as well. I would likely play varied material, not to
much Count or Duke or King (any of them), the punks might learn
enough to learn to like them. Perhaps "Lux Aeterna" at 110 dB.

 

[JosephKK]

Uncle Al [email protected] posted to sci.electronics.design:

Big woofers, small testicles. You'd be arrested for malicious
destruction of property.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2

Maybe. They would have to find the device, prove it was mine, and
that it was being operated at that time. If the first is
intractable, the following are harder.

 

[[email protected]]

[email protected] wrote:

How exactly did that mode work, tracking target range but using EW
interference for az/el? How could you not know your az/el if you're
getting detections from your pulse?

The TRR was slaved in azimuth and elevation to the TTR.

The TTR had the required hardware to track in azimuth and elevation.

When jammed, the TTR tracked the jamming source.

The TRR provided only range information.

The TTR was X band.

The TRR was Ku band and frequency agile to get around the jamming.

 

[[email protected]]

The military reference says that they power and store the energy beam
equipment with resources that are used for VTOL hardware in other models.

Wires have less inductance if they are really short.

No shit?

Don't know

Pulse radars use the same antenna to send and receive.

Yeah, but the implication was the little 4 inch dodad was a megawatt
source. Now it's a receiver front end too?

Put it under a streamlined radome.

Not a lot of area there for gigawatts.

 

[[email protected]]

On Mon, 20 Aug 2007 22:25:02 GMT, [email protected] wrote:

Switched power *is* RF!

Ummm, no.

Switched power is just switched power.

There has to be a microwave RF generator somewhere.

 

[Robert Latest]

["Followup-To:" header set to sci.electronics.design.]

The array radars on the F-22 and JSF are reported to hit gigawatts
peak, and may one day get into the terawatt range.

The JSF is reported to hit a lot of things. From the webpage
www.jsf.mil:

The JSFs advanced airframe, autonomic logistics, avionics,
propulsion systems, stealth, and firepower will ensure that
the F-35 is the most affordable, lethal, supportable and
survivable aircraft ever to be used by so many warfighters
across the globe.

I've hardly ever read a longer catenation of random attributes. I don't know
about the radar, but at least the webpage is a terawatt hot air blower.

robert

 

[Robert Latest]

["Followup-To:" header set to sci.electronics.design.]

Would it be possible to build a gizmo that could be surreptitiously
aimed at the offending stereo system to fry some crucial components?

At some hacker congress I once saw a proposed device consisting of a
satellite dish and the guts of a microwave oven.

I dreamed about it while lying awake at night when I lived in an apartment
with nothing but a wooden ceiling between a jukebox and my apartment.

robert

 

[JW]

Sitting at a gas station as some backwards baseball cap and saggass
britches wearing kid parks in the fire zone in front of the store with
some fukdamuhfukinniggahbeyotch crap blasting out of his truck for
everyone's entertainment, got me to thinking.

Would it be possible to build a gizmo that could be surreptitiously
aimed at the offending stereo system to fry some crucial components?
It would have to be able to do it on a pretty localized basis without
causing damage to the person aiming the gizmo or innocent bystanders
or their car's electronics. Whether it would fry any additional
components of said target punk's car isn't of great concern.

Call it The Rapper Zapper.

Just wonderin'.

How about one of these:
http://www.betterhomesecurity.com/~Stun_Guns.php?ref=stg800
discharged to the vehicle's antenna?

 

[Arny Krueger]

The TRR was slaved in azimuth and elevation to the TTR.

The TTR had the required hardware to track in azimuth and elevation.

When jammed, the TTR tracked the jamming source.

Jammers have to behave somewhat suicidally. I've tracked real-world jamming
sources and they are very easy to track because they put out one heck of a
signal. In Vietnam, our jamming planes were called "Wild Weasels" and were
often short-lived.

The TRR provided only range information.

The TTR was X band.

The TRR was Ku band and frequency agile to get around the jamming.

In Hawk the TRR was called the ROR, range-only-radar. But the frequencies
and the function were the same. In Hawk, range information could be
optional, since the missile homed. In Nike, range information was critical,
because the missile was a remote controlled airplane of sorts.

Hawk was later augmented with optical tracking based on a telescope, a TV
camera, and sometime after that, an IR imager.

 

[Arny Krueger]

You got to be some kind of genius to do an average power calculation like
that, you know that? I could understand if you were really really old like
say 67 or more

60.

 

[John Larkin]

Ummm, no.

Switched power is just switched power.

There has to be a microwave RF generator somewhere.

Google "uwb transmitter".

Good grief.

John

 

[[email protected]]

Ummm, no.

Switched power is just switched power.

There has to be a microwave RF generator somewhere.

[/QUOTE]

Google "uwb transmitter".

Good grief.

A phased array requires precise phase (or frequency) control of the
emitters to do the beam forming and aiming.

How does one do that with a "uwb transmitter"?

 

[John Larkin]

A phased array requires precise phase (or frequency) control of the
emitters to do the beam forming and aiming.

How does one do that with a "uwb transmitter"?

Timing.

John

 

[[email protected]]

A phased array requires precise phase (or frequency) control of the
emitters to do the beam forming and aiming.

How does one do that with a "uwb transmitter"?

[/QUOTE]

Timing.

Point totally missed.

Which phase (or frequency) of an Ultra Wide Band transmitter do you use?

You can't use all of them.

 

[Scott Dorsey]

A phased array requires precise phase (or frequency) control of the
emitters to do the beam forming and aiming.

The way most of the phased-array systems I have seen operate is that there
is a master clock which drives all of the individual transmitter modules,
and each of the modules receives a control signal for a phase modulator,
which shifts the output of that module by a preset amount. How this is
accomplished in each module varies a lot depending on the speed of control
required, the bandwidth required, and the size. When you have a few hundred
channels, shrinking each channel in size becomes critical.
--scott

 

[John Larkin]

Point totally missed.

Which phase (or frequency) of an Ultra Wide Band transmitter do you use?

You can't use all of them.

Do you have a PhD in what can't be done?

John