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goujet
registered user
Messages: 2 Location: Czech republic
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Created: 2006-10-12, 10:25 PM CET Subject: Jammer for 1800 MHz
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Hi friends,
I would like to construct any jammer for 1800 MHz. I look for VCO for this. I would like to use cheap semiconductor. I think to use oscillator with BFR91 with varicape and it will be good.
You can look to my other topic there is my transmitter for 1,3 GHz. I can do oscillator for 1.8 GHz. What do you think?
Or have anybody better idea?
Bye. Josef.
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richy_64
Administrator
Messages: 198
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Created: 2006-10-12, 10:33 PM CET Subject: Re: Jammer for 1800 MHz
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Hi Josef, yes, it´s really difficult to find a vco for GSM1800. I already tried to build a GHz-transistor oscillator by myself, but i failed. The problem is that i do this for hobby and don´t have expensive measurement tools. Your transmitter is really nice :-) Of course i want to ask you for the schematics... especially for the oscillator. Building such oscillators is soooo hard.
Greetings, Richard
_______________________
"Ich liebe es, wenn ein (Schalt-)Plan funktioniert."
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zxcxz
Guest
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Created: 2006-10-19, 05:12 PM CET Subject: Re: Jammer for 1800 MHz
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Hello! Maybe can use frequency doubler???
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richy_64
Administrator
Messages: 198
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Created: 2006-10-19, 06:03 PM CET Subject: Re: Jammer for 1800 MHz
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Hi... sure, frequency doublers are possible. But don´t ask me about their attenuation . Some gain stages and filters would be effortful. I made some experiments on rf technology... when it doesn´t work, it can be very frustrating... In my opinon, this is too difficult to realise for most people. I´m still thinking of an 900MHz, low cost, easy-to-build, low power jammer mounted on a pcb without the need of adjustments... sounds difficult? No, sounds competeting If only i had more time...
_______________________
"Ich liebe es, wenn ein (Schalt-)Plan funktioniert."
[edited: 2006-10-19, 06:30 PM CET by richy_64]
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qzfh
Alumnus member
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Created: 2006-10-24, 08:39 AM CET Subject: Re: Jammer for 1800 MHz
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good!
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Gast
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Created: 2008-01-14, 11:31 AM CET Subject: Re: Jammer for 1800 MHz
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