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Microwave Forum / Cellular Phone Jammers

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aslanofegypt
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Messages: 3
New PostCreated: 2004-04-20, 10:54 PM CET  Subject: hi  print  print thread  recommend Reply with Quotation  
Chroniken der Unterwelt - City of Bo...
hi...
i am so happy too join you

my question is what about (ferrite bead)?
i dont know what it is looklike?do you have a picture show FB clearly ?
and from where i can get it?

about the Siemens_A36 picture please upload the table of contents

regards...
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kleiner-onkel

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Messages: 412
Location: South-West-G
New PostCreated: 2004-04-21, 10:56 PM CET  Subject:  FB ????  print  recommend Reply with Quotation  
@ high frequencies,ferrite bead around a cable work like a resistor
instead of a inductor and dissipates noise in the form of head.
Also it's perfect to build a bias with low pass characteristic that vary
on the depending material.
A Siemens S4 have already a FB on PCB.
That's the small black thing in front of the power hybrid.

Questions???

I also look for eqivalent VCO's to the Maxim Pos1060


Chris
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aslanofegypt
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Messages: 3
New PostCreated: 2004-04-23, 03:16 PM CET  Subject:  Re:  print  recommend Reply with Quotation  
do you try this before????
http://gbppr.dyndns.org/PROJ/mil/celljam/gsm900_jammer.png
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kleiner-onkel

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Messages: 412
Location: South-West-G
New PostCreated: 2004-04-23, 10:38 PM CET  Subject:  Re: hi  print  recommend Reply with Quotation  
Hy..
#That's the same circuit, only with a Maxim VCO instead a MiniCircuit Pos1060 ,,, if you find that VCO you better use my amplifier after
the signal attenuator. So it's posibble to boost the signal from less than 5 db to over 1 Watt .... The noise circuit looks nice ... Don't forget the att. or our amp. work like a transmitter.

Chris
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