Operating instructions

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RF Technology R800 Page 2
CONTENTS CONTENTS
1 Operating Instructions 4
1.1 Front Panel Controls and Indicators 4
1.1.1 Mon Volume 4
1.1.2 Mon. Sq 4
1.1.3 N. Sq 4
1.1.4 C. Sq 5
1.1.5 Line 5
1.1.6 PWR LED 5
1.1.7 SQ LED 5
1.1.8 Alarm Led 5
2 Receiver Internal Jumper Options 6
2.1 JP1: 240Hz Notch Filter 6
2.2 JP2: Audio Response 6
2.3 JP3: Audio Filter In/Out 6
2.4 JP4: 600 Ohm Line dc Loop COS 6
2.5 JP6: COS Polarity 6
2.6 JP7, JP8, JP9 dc Loop COS Configuration (JP4 1-2) 6
2.7 JP7, JP8, JP9 Direct Output COS (JP4 2-3) 6
2.8 JP11: Eprom Type 7
3 Receiver I/O Connections 8
3.1 25 Pin Connector 8
4 Frequency Programming 8
5 Circuit Description 9
5.1 RF Section 9
5.2 IF Section 9
5.3 VCO Section 10
5.4 P.L.L. Section 10
5.5 Audio Signal Processing 10
5.6 Noise filter, Amplifier and Detector 11
5.7 Subtone Filter and CTCSS 11
5.8 External Squelch 11
5.9 Microprocessor Controller 11
5.10 Carrier Operated Switch 12
5.11 Voltage Regulator 12
5.12 Tuning Voltage Supply 12
6 Alignment Procedure 13
6.1 Standard Input Signal 13
6.2 RF Alignment 13
6.3 IF Alignment 14
6.4 Line Level Adjustment 14
6.5 Reference Oscillator Calibration 14
7 Specifications 15
7.1 General Description 15
7.1.1 Channel Capacity 15