In this paper, MODEM theory is analyed and the composition of 600-1,800 bps FSK MODEM is also studied. Especially, for the purpose of home production it is designed and made by using homemade semiconductor elements and OP amplifiers easily obtainable....
In this paper, MODEM theory is analyed and the composition of 600-1,800 bps FSK MODEM is also studied. Especially, for the purpose of home production it is designed and made by using homemade semiconductor elements and OP amplifiers easily obtainable.
It is shown that this system is able to be interface with the existing products, and that the bit error rate is able to be approximate to theoretic maximum value.