Indoor Satellite Television Dish for populated cities?

(Bill Kearney) wrote in
news
Take the same size dish that you would normally use outdoors, plus
about 10%. Replace the part of the roof above it with radome
plastic. Most acrylic roofing sheet will also do.

Which, when you get caught, will make things worse for you since
you not only had the prohibited dish but you also conspired to HIDE
it.

Nah; they'll probably only cut his head off once.

Overthrow the government.

--
Bert Hyman | St. Paul, MN |

Jim Watt wrote:

Glass passes the signal just fine. It is glass that contains lead or
other non passive materials that causes problems.

BULL**** !

Normal window glass attenuates satellite signal considerably
and it does not contain any significant lead.

Histrionics aside, very few installations of window glass are
pure glass.

There is no such thing as 'pure glass'

Do some resarch into the subject its quite interesting and
an area that has developed a lot in the last decade.

I get little or no attenuation through my circa 1928 living room
glass windows. I get little or no signal at all through my circa
1990 bedroom glass windows.

That's all the research I need to know.

wrote:

Does anyone know a good indoor Satellite Dish that works in
Tehran/Iran?

A dish could be hidden in a large plastic bag. Or in a box covered with
plastic sheeting.

Glass should be okay as a cover; heat-reflecting or tinted glass isn't.
But glass is see-through.

The 'invisible' antennas often are just a dish in a plastic box - not
much special about them. Some are a slightly more efficient dish design
to compensate for the smaller size.

Alternative antennas are also possible. These may or may not be easy to
recognize. And RF lens design could be fairly easy to make and might be
inconspicuous because it is so different:

http://www.st.northropgrumman.com/ca.../aiaa_1078.pdf

I've seen a radio amateur who described making one from styrofoam and
aluminum foil. These lenses work only with a single polarization, which
is quite a disadvantage.

Note that a normal dish (offset dish) can be rotated. When rotating it,
the correct angle will change. This will make the dish take an
unexpected shape, even pointing in the 'wrong' direction. Which could
make it easier to hide it.

On the other hand, an operating dish probably leaks out RF. This would
demonstrate a dish operating.

A TV leaks radiation as well, but a satellite reception and a DVD
viewing would be difficult to discern.


Good luck,


Thomas

On Wed, 30 Aug 2006 10:16:22 +0100, "Andy Luckman (AJL Electronics)"
wrote:

In article , Jim Watt
wrote:

Although some people in the UK report getting dishes to work
behind glass, that certainly was not my experience in a fringe
area.

So how do you explain that we have a minidish / quad running happily behind
our shop window? We have the Sky HD and a standard box in use and I would
say it was more resilient than the external dish.

You are in a fringe area ?
--
Jim Watt
http://www.gibnet.com

On Wed, 30 Aug 2006 10:34:52 -0700, UCLAN wrote:

Jim Watt wrote:

Glass passes the signal just fine. It is glass that contains lead or
other non passive materials that causes problems.

BULL**** !

Normal window glass attenuates satellite signal considerably
and it does not contain any significant lead.

Histrionics aside, very few installations of window glass are
pure glass.

There is no such thing as 'pure glass'

Do some resarch into the subject its quite interesting and
an area that has developed a lot in the last decade.

I get little or no attenuation through my circa 1928 living room
glass windows. I get little or no signal at all through my circa
1990 bedroom glass windows.

That's all the research I need to know.

Your 1928 glass is based on sodium which has been
replaced with better materials. It was much more
difficult to do things with than later glasses and
does not have the same strength.

However Jomtien is on the right track with plastics.
--
Jim Watt
http://www.gibnet.com

In article , Jim Watt
wrote:

You are in a fringe area ?

Everyone using a minidish is in a fringe area. :-)

--
AJL Electronics (G6FGO) Ltd : Satellite and TV aerial systems
http://www.classicmicrocars.co.uk : http://www.ajlelectronics.co.uk

On Thu, 31 Aug 2006 08:02:37 +0100, "Andy Luckman (AJL Electronics)"
wrote:

In article , Jim Watt
wrote:

You are in a fringe area ?

Everyone using a minidish is in a fringe area. :-)

Thats an opinion However there is a lot more signal
where you are than where I am and where to get all the
sigs reliably one needs a 1.8m dish which might not
fit behind your showroom window comfortably.

I previously mentioned that dishless antenna that looks
like a sawn off exhaust pipe, its not worth trying one
here though.

Have you seen one actually working ?
--
Jim Watt
http://www.gibnet.com

wrote in message
Does anyone know a good indoor Satellite Dish that works in
Tehran/Iran?

A few friends are suggesting:

http://www.maplin.co.uk/searchtempla...LLITE%20D ISH

http://www.rflinkusa.com/products_apd1410.html

Any suggestions? Thanks.



I understand that you are no longer allowed an external dish. Why not take
the external dish down and try it behind a window to see what happens. If it
works with the window open but not closed then try it with a pexiglass in
front. If that still works then change the window glass to pexiglass. It
might be safer/cheaper than trying to import a special internal dish.

Ian

In article , Jim Watt
wrote:

[Dish antenna horn]


Have you seen one actually working ?

I did order one from our distributers for test. However, they suggested that
it may be better to set fire to a bunch of £20 notes. The end result would
be similar. :-)


--
AJL Electronics (G6FGO) Ltd : Satellite and TV aerial systems
http://www.classicmicrocars.co.uk : http://www.ajlelectronics.co.uk

On Thu, 31 Aug 2006 13:22:04 +0100, "Andy Luckman (AJL Electronics)"
wrote:

In article , Jim Watt
wrote:

[Dish antenna horn]


Have you seen one actually working ?

I did order one from our distributers for test. However, they suggested that
it may be better to set fire to a bunch of £20 notes. The end result would
be similar. :-)

Sadly that was my suspicion, otherwise it might make a
wonderful stealth antenna poking through a wall.


--
Jim Watt
http://www.gibnet.com