Thought I would start here for this question. I would like to build a
passive antenna for my cell phone that has no port. I know it goes
into the 1100 MHZ range if that helps. I would like to use this for
using in my house and for car use. Unless you know of a good link to a
site that sells such a thing. It seems like every new cell phone I get
over the years never has the range that is needed to pick up the towers
in my home (upstairs) or in my car over country roads (drops calls).

Thanks

On 20 Apr 2005 04:56:21 -0700, wrote:

Thought I would start here for this question. I would like to build a
passive antenna for my cell phone that has no port. I know it goes
into the 1100 MHZ range if that helps. I would like to use this for
using in my house and for car use. Unless you know of a good link to a
site that sells such a thing. It seems like every new cell phone I get
over the years never has the range that is needed to pick up the towers
in my home (upstairs) or in my car over country roads (drops calls).

Thanks

try http://www.ccrane.com

Vile 5 wrote:
"I would like to build a passive antenna for my cell phojne that has no
port. I know it goes into the 1100 MHZ range if that helps."

J.D. Kraus invented an antenna in 1938 that may help. He called it a
corner reflector.

The ARRL "Antenna Book" has tables and construction details, but you
might get by by making a cardboard corner papered on its inside with
aluminum foil. to make a reflector for your cell phone. You might make
it twice as wide as it needs to be so that you can make a 90-degree bend
in its middle. both reflecting panels (either side of the fold) may then
be one or two feet on a side.

You might wrap the reflector around the phone and your head while you
aim the interior angle in the direction of the repeater which serves you
best. You may get around 10 dB gain which is enough to make a difference
but not solve every problem. Don`t bother trying to patent the corner
reflector. Kraus and RCA did that back in 1939 or 1940, I believe.

Best regards, Richard Harrison, KB5WZI

Richard Harrison wrote:
Vile 5 wrote:
"I would like to build a passive antenna for my cell phojne that has
no
port. I know it goes into the 1100 MHZ range if that helps."

J.D. Kraus invented an antenna in 1938 that may help. He called it a
corner reflector.

The ARRL "Antenna Book" has tables and construction details, but you
might get by by making a cardboard corner papered on its inside with
aluminum foil. to make a reflector for your cell phone. You might
make
it twice as wide as it needs to be so that you can make a 90-degree
bend
in its middle. both reflecting panels (either side of the fold) may
then
be one or two feet on a side.

You might wrap the reflector around the phone and your head while you
aim the interior angle in the direction of the repeater which serves
you
best. You may get around 10 dB gain which is enough to make a
difference
but not solve every problem. Don`t bother trying to patent the corner
reflector. Kraus and RCA did that back in 1939 or 1940, I believe.

Best regards, Richard Harrison, KB5WZI

How big should this cardboard be? I might try this. I bought some
cheap tv antenna rabbit ears and got a minimum signal to check
messsages in my basement. What actually is the antenna inside my cell
phone anyway? I just need a larger version of that maybe?

Vile 5 wrote:
"How big should this cardboard be?"

You want a metal corner between squares, 1 or 2 feet on a side. It makes
a reflector in which images align with the cell phone antenna.

Best regards, Richard Harrison, KB5WZI

How about this, just change the dimensions for the frequency you wish to
cover?
http://martybugs.net/wireless/biquad/
Seems like decent gain for a simple design...
Regards,
John

wrote in message
oups.com...
Thought I would start here for this question. I would like to build a
passive antenna for my cell phone that has no port. I know it goes
into the 1100 MHZ range if that helps. I would like to use this for
using in my house and for car use. Unless you know of a good link to a
site that sells such a thing. It seems like every new cell phone I get
over the years never has the range that is needed to pick up the towers
in my home (upstairs) or in my car over country roads (drops calls).

Thanks

I don't think I can build this. Are the parts avail on that site? I
did find a interesting item I ordered on ....

http://www.cell-phone-accessories.com/link.html. Motorola c650.

if it works I will report back or if it does not for that matter.

You are joking, right? puzzled-look-on-face

Regards,
John

Well this does seem better so far, but could be better. I went to
Menards and went to the long metal pipe section and had full bars
there. Makes me just want to find a portable long antenna that is
colaspable since I can't drive around with a long metal pipe in
my car.

Ahhh, I can see this question is out of my league, I am a newbie--the
old-timers can probably put ya straight wink

Regards,
John