Multitone RPR 551IS - Section 3: Technical Description

RPR 550IS Series
TM1188 Issue 1 Page 3 - 1
SECTION 3
TECHNICAL DESCRIPTION
CONTENTS:
1. INTRODUCTION
3. PHYSICAL CHARACTERISTICS
7. FUNCTIONAL DESCRIPTION
8. Signal Processing
9. RPR 551IS RADIO BOARD (FRONT END)
10. Antenna
11. RF Amplifier
12. Local Oscillator
14. Mixer
15. RPR 552IS RADIO BOARD (FRONT END)
16. Antenna
17. RF Amplifier
18. SAW Filter
19. Local Oscillator
20. Mixer
21. RPR 553IS RADIO BOARD (FRONT END)
22. Antenna
23. RF Amplifier
24. SAW Filter
25. Local Oscillator
26. Mixer
27. RPR 550IS MAIN BOARD
28. IF Amplifier, Filters and Discriminator
29. Audio and Data Processing
30. DC Feedback
31. AC Feedback
32. Decoder Circuit
36. Decoder Operation
38. Clocks
39. Speech Enable
40. Visual Alert LED
41. Audible Alert Drive Circuit