ajex
Member level 4
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Its very simple one and powerful, working in 5Km radius circular range..
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betwixt said:Please don't use it within 5Km of me!
It has no frequency stabilization whatsoever, it will drift frequency as the battery discharges, it is both AM and FM and I would guess it produces as much of its output in harmonics as in the fundamental frequency. There is no RF filtering or decoupling on the supply or input connections and it will shift frequency as objects or people move close to the antenna.
Brian.
betwixt said:Now you are showing your age!
Brian (sadly, I remember it too!)
vfone said:2SC1162 is an Audio Frequency power transistor. Hard to believe that will oscillate at 100MHz FM broadcast band.
Its frequency will drift all over the place if something moves toward or away from its antenna and as the battery runs down.zlatkoMM said:Like always Audiguru is a smart ass....
Garbage project- how you can say that someone work is garbage?
This is just beginner project so if work ....ok for me.
The given schematic is of a Rf amplifier whereas the discussion here is about a simple FM transmitter. There are ample good FM transmitter circuits on the web with one coil or with coil printed on the PCB. Guess such designs are ideally suited for newbies..amjadali56 said:
amjadali56 said:
ajex said:Its very simple one and powerful, working in 5Km radius circular range..
https://sites.google.com/site/ehobbyprojects