>>> WIRELESS CONVERSION SYSTEM <<<
This System will turn your FM Radio into a wireless speaker. A wiring diagram of the frequency control / modulator and FM Band oscillator is shown in Figure 1. To turn the components of Figure 1 into a low power transmitter that generates a signal a FM Radio can receive, the VCO2C RF Output will need to be connected to the DA 188 dipole antenna.
The table of Figure 2 shows typical RF Output frequency as a function of DC control voltage at the VCO2C tuning terminal (V-T). Depending on VCO production lot variations, up to 0.20 volts may need to be added to or subtracted from the V-T values shown in Figure 2 to achieve the desired frequency. A 3 or 6 dB SMA attenuator may need to be inserted between the VCO2C and antenna to minimize frequency pulling of the VCO2C by the antenna mounting configuration.
Figure 1, Wiring Diagram
|VCO Control Voltage (VDC)||RF Output (MHz)||RF Output Power (dBm)|
Figure 2, VCO2C Test Data
Figure 3, VCO2C Test Data Plot
VCO TUNING & FREQUENCY MODULATION PCA, P/N FM219
OSCILLATOR, P/N VCO2C
DIPOLE ANTENNA, P/N DA 188
LINE OUTPUT CABLE
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