I was able to find several of the
old TV cameras used for survelience for $5.00US each.

whoawhoawhoa... that's exactly what I'm looking for.
there's a Lockheed Martin near me, do you think there'd be a surplus store?
how do you find something like that?

Jim,
Griffins e-m address (I am sure you would receive the info you need) is:
griffin@...
also their website is: www.griffinandgeorge.co.uk
snail-mail: Messrs Griffin and George,
Bishop Meadow Rd.,
Loughborough, Leics.
LE11 5RG
Tel: 01509 233344
Fx: 01509 231893
Keith Messent, Skipton, UK

Thanks Keith and Peter for your input on this. Keith, do you have a
web address for 'Messrs Griffin and George' as a yahoo and lycos
search became very convoluted. Peter, I took your advice and went to
the Boeing surplus near my home. I was able to find several of the
old TV cameras used for survelience for $5.00US each. I am anxious
to strip the one I bought to see if it will do the job. The case is
perfect for the laser simulator I intend to build. If the lens works
then we are off to a great start. ttyl, Jim



-- In Electronics_101@y..., Peter tremewen <Ptremewe@b...> wrote:

hazelnutweb@h... wrote:

Hi group, There isn't much information available on laser

technology
CUT

hazelnutweb@... wrote:

Hi group, There isn't much information available on laser technology
for the hobbiest.??? Although I'm an electronics tech, lasers aren't
part of my forte. I am stuck on finding a source of optical lenses
for experiments.??? Any suggestions for finding something like a 30-mm
diameter, 55-mm focal length plano convex lens???? With technicians pay
cost is important. ttyl Jim

To unsubscribe from this group, send an email to:
Electronics_101-unsubscribe@...
???
???

Your use of Yahoo! Groups is subject to

????????? If your willing to take a bit of a risk not getting EXACTLY what you
want, I'd sugest old over head projectors or slide projectors. There are
plenty of source for older second hand lens assemblies for cameras that you
could probably look into. Also, older laserprinters or photocopiers might be
helpfull. I also do a bit of photography as a hobby, and have found some
interesting lens, mirror and optical components from these sources. These are
actually of quite good quality it seems........????????? Also,??? If your after
specific information cheaply about lasers and optics, there are I'm sure some
GREAT texts in the physics section of the local library.........

)O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(??? )O(

???????????? The Sinister Dragon
???

Hey, Just because I'm EVIL,
???????????? Doesn't make me a bad person......????????? >:-)

Visit My sites at Geocities:
??? Blood Moon -
??? Little Herbal -
??? Zenit Photographic -

Join my Egroup:
??? Inverted Pentagram -
??? Zenit-EM -
???

You could try Messrs Griffin and George, school laboratory suppliers,
whose Catalogue is on line (if you have enough memory to cope with it!)
Keith Messent, Skipton, UK

Hi group, There isn't much information available on laser technology
for the hobbiest. Although I'm an electronics tech, lasers aren't
part of my forte. I am stuck on finding a source of optical lenses
for experiments. Any suggestions for finding something like a 30-mm
diameter, 55-mm focal length plano convex lens? With technicians pay
cost is important. ttyl Jim

hi everyone,
I am 32 y.o. and for about 8 years I work as a TV serviceman.I am
looking for a job in a TV repairshop or something close to that.If
anybody is interesting to have a cheap&skilled employer just let me
know.pls mail to :soptea@...

Do you know anybody who did that, some contact or web addressess.




--- In Electronics_101@y..., Tavys Ashcroft <bigtex@c...> wrote:

I am also planning to make a device which can be connected to an

ethernet

card doing the same thing, eliminating wires. This also has a

problem. This

needs a high quality tranciever which can handle very high

bandwidths.

If you can help me please send me some additional information

regarding the

circuits I can use .

Some students at UC Davis where I used to go had set up their own
wireless ethernet that way. They hooked up their dorm computer's
ethernet to a transceiver and put a microwave antenna on top of

their

dorm building. Then with a laptop they could go anywhere on campus
and pick up the two-way connection. Just like ethernet, no wires.
All dorm computers there had shared T1 connection, so it was very
fast. It was a hoot to see streaming video in the middle of a

grassy

field.

I didn't find out much about what they actually did, but I know it
sure is possible.

-Tavys

I am also planning to make a device which can be connected to an ethernet
card doing the same thing, eliminating wires. This also has a problem. This
needs a high quality tranciever which can handle very high bandwidths.

If you can help me please send me some additional information regarding the
circuits I can use .

Some students at UC Davis where I used to go had set up their own wireless ethernet that way. They hooked up their dorm computer's ethernet to a transceiver and put a microwave antenna on top of their dorm building. Then with a laptop they could go anywhere on campus and pick up the two-way connection. Just like ethernet, no wires. All dorm computers there had shared T1 connection, so it was very fast. It was a hoot to see streaming video in the middle of a grassy field.

I didn't find out much about what they actually did, but I know it sure is possible.

-Tavys

I am a computer student and I wanted to do a project in communication
between two computers. I was planning to do dialupnetworking without
phonelines. I want to use a wireless device instead of phoneline. A
transciever which can be connected to a modem and fool the modem that it is
connected to a telephone line. This has a small problem. We will have to
produce a dialtone, and when the modem dials the device on the other modem
should produce ringing tone.

I am also planning to make a device which can be connected to an ethernet
card doing the same thing, eliminating wires. This also has a problem. This
needs a high quality tranciever which can handle very high bandwidths.

If you can help me please send me some additional information regarding the
circuits I can use .

Waiting for A reply
Kenney

Since nobody really responds to audible car alarms anymore, and everybody hates them, it would make more sense to have the sensors in the car alarm trigger, via RF signals, a message sent to a pager, phone, or audible alarm within the house. This would allow for more discrete notification, and possible tracking of the vehicle. It would also be possible to set up two-way communications between the vehicle and base station in home or cell phone so the owner could yell at the theif personally. That would be fun.

I would love to hear the end of loud car alarms. Especially the Viper ones that cycle through the same tone patterns over and over and over while I'm trying to sleep.

-Tavys

I know lots about sensors and switches, but nothing about wireless and
software.
let's talk!
email: dan@...

I know a bit about RF stuff, circuit design, machine design, optical sensors, control circuitry, and relay logic, etc. I'm interested in collaborating on this.

email: bigtex@...

-Tavys

Dear Jan,
You can check out this page for nokia connector. I
wish it would be the same model of yours.



Also this link for photos..



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Hi Hugh,

Yes, I am interest.

This idee have passed my mind before, to install an old cellular
telephone in the car (hidden) and then using the AUX socket on the
phone interface with the car alarm immobilize.

I tried to obtain the pin description on the AUX socket but was not
successfully, just to see if it's possible to do.

Could someone help, with a URL to obtain the pin layout /
description on the Nokia cellphone.

Or do I try to hunt rainbows; it would not be possible.

Regards

Jan

Hi, I'm new to this group but old and experienced with electronic
devices. Have you thought about a surge suppressor for your device?
Just a thought! c ya

I know lots about sensors and switches, but nothing about wireless and
software.
let's talk!
email: dan@...

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