Crystal Am Transmitter Circuit. Since the audio signal is week and it is few milli volts it cannot be transfer for longer distances. Place your am crystal radio close to the transmitter and tune to the frequency of the transmitter 1000khz.
Using a crystal oscillator circuit enables a high performance high stability oscillator to be built very cheaply and easily. The high frequency signal generated via the crystal oscillator is passed to the modulation transformer. This is made by winding 30 turns of number 24 wire on an amidon ft 50 61 ferrite core.
There are two tuned circuits in the transmitter for which the capacitance must be calculated based on the am band frequency that s chosen.
A 10mhz crystal is used to generate highly stable carrier frequency. This is made by winding 30 turns of number 24 wire on an amidon ft 50 61 ferrite core. The working of this am transmitter is divided into 3 stages. The crystal can be practically any surplus crystal with a fundamental frequency between 530 khz and 1 7 mhz in 10 khz increments but the higher frequencies work best.
