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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2></FONT></DIV><FONT face=Arial size=2>Gday people</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=Arial size=2>This is a bit off topic from wireless data
networks, but it's on the topic of wireless anyway so i thought i'd ask a few
questions anyway</FONT></DIV>
<DIV><FONT face=Arial><FONT size=2>I was thinkin the other day, my house is on
one side of a hill, where we get telstra and vodafone reception, but no optus
at all. Well, there is one scenario where you get pissweak optus. When the
phone is held up against the window pane. Which made me think, does glass (or
a specific size of glass) resonate at the frequencies mobile phones transmit
at? Or am i way off here.. I think i might be partially right, coz in the
middle of the house there's no reception, but at either sides (20m apart) on
windows, there is reception.<SPAN class=618525222-16102002><FONT
color=#0000ff> </FONT></SPAN></FONT></FONT></DIV></BLOCKQUOTE>
<DIV dir=ltr><FONT face=Arial><FONT size=2><SPAN class=618525222-16102002><FONT
color=#0000ff>Domestic glass shouldn't cause a problem. The tinted glass
used in commercial offices does do horrible things to RF (I know, I've tangles
with it many times on many bands :) ).</FONT> </SPAN></FONT></FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=Arial><FONT size=2>Anyway, that's a bit off topic again. I was
thinking, if i get a galaxy antenna, and mod the dipole so that it's the right
length for mobile phone frequencies, and then connect that to an omni in the
middle of the house, would this passive repeater give me reception? Or would
the signal be way too weak to use a passive transmitter? If it was too weak,
would i be able to use a low power amplifier?<SPAN
class=618525222-16102002><FONT
color=#0000ff> </FONT></SPAN></FONT></FONT></DIV></BLOCKQUOTE>
<DIV dir=ltr><FONT face=Arial><FONT size=2><SPAN class=618525222-16102002><FONT
color=#0000ff>At 900 MHz, a Galaxy antenna is not goint to be really
effective. a "24 dBi" with a 900 MHz feed would give reasonably good
(arounf 12-15dBi) gain at these frequencies, but it would be less
trouble to do one of two things:</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=ltr><FONT face=Arial><FONT size=2><SPAN
class=618525222-16102002></SPAN></FONT></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial><FONT size=2><SPAN class=618525222-16102002><FONT
color=#0000ff>1. Buy a GSM omni antenna. They can be bought
from DSE or some mobile</FONT> <FONT color=#0000ff>phone
retailers.</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=ltr><FONT face=Arial><FONT color=#0000ff size=2><SPAN
class=618525222-16102002>2. Build an antenna. Either an omni (I'm sure
Troy could knock one up ;) ) or a Yagi.</SPAN></FONT></FONT></DIV>
<DIV dir=ltr><FONT face=Arial><FONT color=#0000ff size=2><SPAN
class=618525222-16102002></SPAN></FONT></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial><FONT color=#0000ff size=2><SPAN
class=618525222-16102002>Adding an antenna is probably legal (afterall, some are
available aftermarket). Adding an amplifier can incur _very_ severe fines
(> $100,000), unless they are ACA approved. Your biggest challenge in
getting an antenna working is finding the right connectors.
:)</SPAN></FONT></FONT></DIV></BODY></HTML>
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