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found it
The circuit is a very simple poor quality FM radio transmitter with low output power. The schematic is wrong because R5 should connect to ground and C4 should be parallel with it. The value of C3 is also wrong because it is much too small and will pass only high pitched squeaks. It will not work with a microphone because the value of R1 is much too high which will attenuate instead of amplify the very low signal level from a microphone. I think the values of all the resistors are wrong. It is missing pre-emphasis that all FM radio stations have and all FM radios have matching de-emphasis.
What do you want to "amplify"? If you want it to transmit farther then it must be re-designed for it.
You need to understand that a radio station transmits its AUDIO on a microwave signal to the microwave receiver on the mountain. Then the audio from the microwave receiver is used to modulate a certified high power FM transmitter on the mountain.
The simple circuit produces many harmonics. If it is amplified then the harmonics will cause interference with aircraft communications, police, fire department and ambulance radios. That is why you need a licence that shows that the transmitter is certified to not cause interference. Also the radio frequency will change as the battery voltage runs down then it will cause interference with radio stations.
I fixed the first transistor circuit here:
What do you want to "amplify"? If you want it to transmit farther then it must be re-designed for it.
You need to understand that a radio station transmits its AUDIO on a microwave signal to the microwave receiver on the mountain. Then the audio from the microwave receiver is used to modulate a certified high power FM transmitter on the mountain.
The simple circuit produces many harmonics. If it is amplified then the harmonics will cause interference with aircraft communications, police, fire department and ambulance radios. That is why you need a licence that shows that the transmitter is certified to not cause interference. Also the radio frequency will change as the battery voltage runs down then it will cause interference with radio stations.
I fixed the first transistor circuit here:
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yes man you are exactly the person who understood me i want to make a microwave signal and microwave receiver just like the one on the mountain
davenn
Moderator
I did say to you that these units are complex and expensive
US$1000's unless you happen to find a decommissioned one that you can put into service
and I still doubt that you have the technical skills to install and make it work
do you have the dish antennas one for each end ?
what is the distance that the link needs to work over ?
is it line of sight ... no obstructions ? ... it has to be
there's just so many things involved in getting a linking system working
well the distance is gonna be a few 100 metres
well that means this project can not be done 
davenn
Moderator
well that means this project can not be done
would be VERY ambitious for some one with little knowledge and limited funds
you said earlier up to a mountain top (hill top) ..... that's going to be more than a few 100 metres isn't it ?
