FM / MW / SW Radio as Tri-band Transceiver ( full duplex transmission )

In this project i will introduce a full duplex radio communication from  FM / MW / SW Radio.For this we will use two radio sets ,( Digital or Analog Radio set ) just keep two radio sets near each other , tune one of the radio having same band you will observe that both radios will become silent at one tuning point , This is because of local oscillators in both radios , both radios will receive each other local oscillator frequency. Local oscillators are used in superheterodyne receiver for obtaining first IF stage (10.7 MHz ) every coming station frequency output will be remain 10.7 MHz because local oscillator frequency , than another IF stage 455 KHz  and station frequency will simultaneously tune. It means that if want to receive 100 MHz on radio , then local oscillator frequency will be 110.7 MHz , 100+10.7 = 110.7 , 110.7 MHz - 10.7 MHz = 100 MHz  ( At 100 MHz station frequency local oscillator will be having 110.7 MHz ) for having output 10.7 MHz by adding 2 or 3 stages of RF amplifiers a professional transceiver can be made specially for Car Radio. Here in this project actually local oscillator frequency will be amplified , with a fix frequency stability In this case i am going to work on Medium Wave Radio ( MW ) , Here we require 450 KHz at incoming every station , at 1413 KHz local Oscillator frequency will be 1863 KHz  it will be than mixed  & output will be 450 KHz 
1). 1863 KHz - 1413 KHz = 450 KHz  === 1413+450= 1863 KHz 
2). 1485 KHz - 1008 KHz = 450 KHz
Whole MW rang from 522 KHz to 1650 KHz  will have its local Oscillator frequencies Only 2 RF stages will added to the Local Oscillator output for Long range