[MLB-WIRELESS] Interesting thought for all the radio heads

[Bryce Letcher]

The antenna coupling used in the glass mount cellular types is capacitive.
Expect to lose about 3 to 5 dB at the cellular frequencies of about 825 mhz,
and a lot more at higher frequencies. These antenna operate as a either a
1/2 or 5/8th ground plane (folded dipole). I'm guessing it would be possible
to use one of these but adjusting the antenna length to match the SWR at 2.4
GHz would be a real challange. You'd need some really special test gear or a
lot of luck.

Bryce Letcher



-----Original Message-----
From: Shane Chubb [mailto:s.chubb at tronics.com.au]
Sent: Monday, 18 February 2002 12:10
To: melbwireless at wireless.org.au
Subject: [MLB-WIRELESS] Interesting thought for all the radio heads


Whilst driving on the weekend Shaun and I came up with the idea of
trying a bit of war driving.
Without wanting to look like something from mad, max we decided to
investigate the possibilities of utilising an old Analogue mobile phone
whip as a wireless omni?

Anyone out there with the inteligence to actually work this one out?

Remembering that the signal travels through the glass via inductance (I
believe) would this prove impossible to get enough signal through???

This would make the ULTIMATE war driving antenna - no-one would ever
know.

Shane Chubb
Network Manager
MCP+i MCSE
Tronics Pty Ltd
Ph. (03) 94642400
Fax. (03) 94642538
s.chubb at tronics.com.au


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