h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Do you still need that entry on electromagnetic spectrum?

A722387 Electromagnetic Spectrum

Under construction. Please post suggestions and material there.

If you don't need it, just tell me and I'll bulldoze it.

H

Much appreciated, Hell! There's also a piece from Whisky under construction at A694479, so we ought to join forces there

OK-Dokey.

I'll be pointing him to this one soon.

Bye,

H

So, how near, or far, from completion are we?

<BB<

In terms of workload, I think it isn't far from completion. A general washup, bit of cross-linking (or insertion of a link bar at the top), splitting the 'antenna' piece into more easily digestible pieces, re-arranging the heavy tech ones about resolution and PRF, new entries about Stealth and military applications, and that's about it. In terms of time... I can't tell -- What I *can* tell is what kind of sound RL deadlines are making if they are coming closer

Oh, and the 'police radar' entry still has some empty chapters.

I think the Police Radar article is done. It's might need some editting, but I can't look at it any more.

I was wondering if anyone can tell me which band of the spectrum the police radar would be in:

X band: 10.500 to 10.550 GHz
K band: 24.050 to 24.250 GHz
Ka band: 33.4 to 36.0 GHz

yay
So it's me left to finish the 'military applications' piece and perhaps make 'Antennas' more accessible to the lay person.

Thee frequencies used by police radar depend on where you are. Correct me if I'm wrong but AFAIK in the USA they are somewhere around 33GHz (ie: Ka band) whereas European radars are either at 35GHz or somewhere in the 20+x GHz range. That's why those broadly advertised radar warning kits won't do you any good if you (as a European) buy one from the other side of the pond without reading the smallprint.

Looking good

Anyway, could I suggest you take out the 'calibration' header and use 'this researcher' in the footnote?

Is there a more percise version of this sentence that I can use:

The radar antenna emits a beam of light in the radio range.

I took out the footnote. It's not true anymore. I was tagged by the Georgia State Patrol. I also added the section on calibration.

perhaps 'a beam of electromagnetic waves in the radio frequency range'?

I forget where I got my numbers. I think it was some material from the last Radar Update class that I had. I know different areas in the United States work with radars in different bands. That's why if you want to know for sure when the officer has you rather than someone else, you need to have a detector that works in the three different bands plus laser now days.