Microwave Forum

richy_64 · Administrator Beiträge: 198

I have problems to understand you (language problems).
Please write more careful, too...

[If you want to get a helpful answer, describe your problem as good as you can. Often i don´t know how experienced somebody is, and maybe you are not able to understand my answers.]

give me full test cricuit figer bocz i use ziner of pin 4
i don´t understand it at all

may i have to apply 5V from tune. VCC for the VCO and pin 4 also (is that right)
I don´t understand it completely. I try to give general hints.
At V+ you have to connect the power supply, i the circuit for use with a battery pack (4,8 or 6 volts).
6V are good for the PF0140, but it´s too much for both MAX2623 and the µC. So I had to limit the voltage for them by using a 5.1V zener diode.

what will be the totel power tune voltage and AC signal after modulate ?
??? Look at the picture of the oscilloscope, it answers all questions, doesn´t it?

and may i check tuned VCO by placing S-receiver near to it ......or puting output from VCO to inout of S-receiver
You just have to put your circuit in the near of the rf-input of the satellite receiver, you needn´t have to connect them together, because the vco´s power is high enough.