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RE: Urgent 5110 Hardware
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From: |
Joao Carneiro - DLS |
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Subject: |
RE: Urgent 5110 Hardware |
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Date: |
Wed, 5 Jan 2005 14:35:05 -0000 |
-->> Probably this is not the adequate place to
discuss such matters, if anybody has a problem with it please say
so.
1º - you are using a single wire? where did you hooked
it up? to the main antenna contact or to the back connector?
2º - the lenght of the wire should be of a determinate
size, according to the wavelength of the signal.
3º - There is also the problem of the impedance of the
antenna and the impedance of the antenna outlet on the
phone.
I believe that all of these together should be the
cause of your problems. Bad antenna coupling and Bad antenna. You should have
heavy SWR and heavy loss at the antenna for that
purpose.
Hope that i have been useful.
cheers
Hai Every One
I am doing some R&D
on Nokia 5110. Mobile Phone. The R&D is I am using External Power
Supply using LM350 and I 'm giving 4.1 V to the Phone PCB ( this is stripped of
every thing Like LCD,KEYPAD and other non necessary things.)
In 5110 there
are two PCB I have removed the daughther PCB ( lcd,keypad) USING Only the Main
PCB I removed the main antenna I am using Single core wire as antenna . Some
times It is registering with the network some times not
Some one can
help me in this Please
Thanks in Advance
Karthik