Microwave Forum

richy_64 · Administrator Messages: 198

These pictures are not useable for anyone without descriptions like volt per division and time per division...

The 2nd picture: You have measured the POS1060 output??
What is your oscilloscope´s bandwith?

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The sweep frequency to modulate the vco has to be "high".
If the sweep frequency is too low the jammer won´t work, because the gsm error correction can handle short interferences.

To get a higher frequency, change R1,R2,C1.
I have mentioned it above already.

@ Chris
Everyone uses/knows the NE555.
I don´t like it, too.
I don´t know why

imgemini · Chef Clancy Wiggum Messages: 39

i can R1 ,r2 C1 . but this is what is coming friend

the output of this cricuit is = in points only i get 21.5V for DC offset to make it 20v and this is how wave was coming shown on that picture

but i feeb that signal to the tune of POS1060 but anthing coming out
what should i do know ......

imgemini · Chef Clancy Wiggum Messages: 39

come on friends solve my problem

plesae

kleiner-onkel · Administrator Messages: 412 Location: South-West-G

build my sawtooth circuit and throw that damn NE555 away ...!!!

did'nt you got a MC1458 Dual FET OP ????

this circuit is such easy ,,,

Chris

kleiner-onkel · Administrator Messages: 412 Location: South-West-G

if you can't find that ic -..... try this circuit ....!!!

kleiner-onkel · Administrator Messages: 412 Location: South-West-G

for sure it's possible to use simple 741 OP's ...

but two of this device ... because the other are Dual OP's.

Chris

imgemini · Chef Clancy Wiggum Messages: 39

hi
this is your sewthoh circuit man which is just giving me 0.2 v DC output

imgemini · Chef Clancy Wiggum Messages: 39

and the cricuit that u post now i alrealy try it but did work

i will post picture tomarow

shazia · Guest

hi
we have genareted tune signal of 20v and 10kHz what will be would be the required current of the tune signal

we have generated signal of 20 volte from KIT ET-1000 what do you mean by the signal 17-23V peck to peck

and how can we limt our signal from 17-23

imgemini · Chef Clancy Wiggum Messages: 39

i also have some problem

plesae reply both of u

Leahhayhoe · Rod & Todd Flanders Messages: 6

In the modern times, cell phones have become an essential part of our life. You will be out of fashion if you have no cell phone. One hand, you can send massages and make phones to your friends or your colleagues with phones at any time in any places. On the other hand, we will enjoy our life with it, such as listening to music, playing games, taking photos, recording a vedio, suffering the internet, etc. But more and more people are using cell phones at the expense of public interest. They talk aloud over the cell phones, the endless ringtones sounded everywhere. How to cope with the noises of cell phones in public has drawn public attentions in many places of the world. Do we have to force ourselves to listen to the noise generated by cell phones? Of course not, cell phone signal jammer is a useful tool for us to deal with the noise pollution.I have bought one for my convenient life, so if you have the same problem with me, you can come to get one. You will find the cool of it.