Ranger RCI-6900F HP, Manual

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4 Receive Control
Figure 2-3 Your Transceiver Microphone Schematic
Figure 2-5 Microphone plugs pins numbers viewed from rear of pin receptacle.
RCI-6900F HP
RCI-6900F TB CHAPTER 3
CIRCUIT
DESCRIPTION
3.0 INTRODUCTION
This section explains the technical theory of operation for the RCI-6900F HP / RCI-6900F TB mobile
transceiver.
3.1 PLL CIRCUIT
The Phase Lock Loop (PLL) circuit is responsible for developing the receiver’s first local oscillator
signal and the transmitter’s exciter signal. The PLL circuit consists primarily of IC2, IC3, IC4, IC5