NTE100 is a germanium PNP transistor suitable for high frequency oscillation, you might be able to drop this into your circuit with little or no change. A cw transmitter is simply an oscillator operating at the desired frequency power is increased using amplifier stages.
SiGiNT
oh...now i see...thanks!
and btw...schematic is here
L1 is 90 turns, extract at 45. turn on ferrite core
CW is continuous wave with no modulation, so AM and FM do not apply it is simply a no sound quiet spot when listened to on a receiver, it only makes a sound when you have a BFO, (beat frequency oscillator), a built in feature on most shortwave receivers that adds a tone to it - exactly like one signal interferes with another, determining frequency is by calculating the L/C frequency of the components used in the oscillator, determining your frequency was hit or miss due to the unknown of the ferrite rod.
SiGiNT
I want to ask, 90 turns of what gauge of wire usually?
What difference does it make if it's on ferrite?
1. What is an BFO?
2. Should I connect a receiver somewhere because I already seen some other guys on internet are connecting small receievers to transmitters
---------- Post added at 08:55 ---------- Previous post was at 08:54 ----------
It's 22 Gauge...and I don't know about ferrite...that's what it says in the book where i got my schematic from...
Ferromagnetic core materials,such as iron and steel, offer considerably less opposition to the flux than do non magnetic materials such as air,copper,and aluminum...
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