Antenna modification - False Acquisitions problem

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Hello,

I am running the GPL-GPS code on the GPS600 receiver that I purchased from
GPS Creations. I had to modify my Antenna(Trimble) cable length for some
reasons, so I got the cable shortened and got another connector re-crimped
to it. But this modified Antenna seems to have some problems. Now I am
unable to get lock on satellites, but there seem to be a large no. of False
Acquisitions, in the sense that most of the channels (out of 12 available)
now transition upto the Pull-in state and then fall back to Acquisition
state. And the code seems to be running perfectly fine with an unmodified
Trimble Antenna (tracking up to 6-7 satellites !!).
Is there any way to check if there are any problems with my modified Antenna
(probably Impedance matching problems?) besides running it on the GPS
receiver and checking If I'm able to lock satellites or not. And also what
are the possible places at which I might have gone wrong?
Any help would be highly appreciated.

Thanks.

-- 
Siddharth Paliwal

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Hello,<div><br></div><div>I am running the GPL-GPS code on the GPS600 recei=
ver that I purchased from GPS Creations. I had to modify my Antenna(Trimble=
) cable length for some reasons, so I got the cable=A0shortened and got ano=
ther connector re-crimped to it. But this modified Antenna seems to have=A0=
some problems. Now I am unable to get lock on satellites, but there seem to=
 be a large no. of False Acquisitions, in the sense that most of the channe=
ls (out of 12 available) now transition upto the Pull-in state and then fal=
l back to Acquisition state. And the code seems to be running perfectly fin=
e with an unmodified Trimble Antenna (tracking up to 6-7 satellites !!).=A0=
</div>

<div>Is there any way to check if there are any problems with my modified A=
ntenna (probably Impedance matching problems?) besides running it on the GP=
S receiver and checking If I&#39;m able to lock satellites or not. And also=
 what are the possible places at which I might have gone wrong?</div>

<div>Any help would be highly appreciated.</div><div><br></div><div>Thanks.=
</div><div><div><br>-- <br>Siddharth Paliwal<div><br></div><br>
</div></div>

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