Ritron SST-444 Manuals

Manuals and User Guides for Ritron SST-444. We have 3 Ritron SST-444 manuals available for free PDF download: Instruction Manual, Owner's Manual, Operational Description

Ritron SST-444 Instruction Manual (48 pages)

UHF-FM Handheld Transceiver

Brand: Ritron | Category: Two-Way Radio | Size: 0 MB

Table of Contents
2
1 Sst-444 Specifications

5
- General
  5
- Receiver
  6
- Transmitter
  7
2 Introduction

8
- General
  8
  - Inspection
    8
  - Model Identification
    8
- Fcc Regulations
  8
  - Licensing
    8
  - Safety Standards
    8
  - Introduction General
    8
3 Battery Care

9
- Charging
  9
- Battery Replacement
  10
- Precautions
  10
4 Description of Controls and Connectors

11
- Belt Clip Installation
  12
5 Operation

13
- On-Off/Volume
  13
- Receive
  13
- Monitor
  13
- Selective Signaling Squelch
  13
- Battery Saver
  13
- OPERATION On-Off/Volume
  13
- Transmit
  14
- Channel Selection
  14
- What the Radio Tones Mean
  14
- Power On/Self Check "OK
  14
  - Error Tones
    14
  - Channel Select
    14
  - Tone Squelch
    14
  - Recharge Battery Alert
    14
- Optional Radio Tones
  15
  - Receiver Squelch Tone
    15
  - Busy Channel Inhibit
    15
  - Transmitter Time out
    15
- Troubleshooting
  16
  - General
    16
  - Battery
    16
  - Error Tones
    16
  - Tone Coded Squelch
    17
6 Programming the Radio

18
7 Sst-444 Theory of Operation

23
- Introduction
  23
- Power Supply and Voltage Distribution
  23
  - Power Strobe
    23
  - Low Battery Voltage Detection
    23
- Reference Oscillator
  24
- Synthesizer
  24
  - Pin Numbers
    24
  - Prescaler Divider / Synthesizer Controller
    24
  - VCO / Buffer Amplifiers
    25
  - Oscillator Modulation
    25
- Digital Potentiometers
  25
- Receiver
  26
  - RF Amplifier
    26
  - 1St Mixer
    26
  - FM Receiver Subsystem
    26
  - Voice / Tone Conditioning in Receiver Mode
    26
  - Voice Band
    27
  - Sub-Audible
    27
  - Audio Amplifier
    27
- Antenna Switching / Low-Pass Filter
  27
- Transmitter
  28
  - Keying
    28
  - VTX Supply
    28
  - Power Amplifier
    28
  - Voice/Tone Conditioning in Transmit Mode
    28
  - Voice Band
    28
  - Sub-Audible
    29
- Microcontroller
  29
- Recommended Test Equipment
  31
- Radio Preparation
  31
- Sst-444 Alignment Procedure Recommended Test Equipment
  31
- Reference Frequency
  32
- Modulation Balance
  32
- Transmitter Tone Deviation
  32
- Transmitter Voice Deviation
  33
- Transmitter Power
  33
- Receiver Sensitivity and Squelch
  33
- Receiver Noise Squelch
  34
- Synthesizer
  34
9 Sst-444 Voltage Chart

35
- Measurement Conditions
  35
- SST-444 Voltages
  35
10 Sst-444 Schematic Reference Parts List

41
11 Sst-444 Case Assembly Parts List

48

Ritron SST-444 Owner's Manual (16 pages)

FOUR SERIES

Brand: Ritron | Category: Two-Way Radio | Size: 1 MB

Ritron SST-444 Operational Description (15 pages)

UHF-FM Handheld Transceiver

Brand: Ritron | Category: Transceiver | Size: 0 MB

Ritron Categories

Two-Way Radio Transceiver Radio Accessories Security System

More Ritron Manuals

Ritron SST-444 Manuals

Ritron SST-444 Instruction Manual (48 pages)

Table of Contents

1 Sst-444 Specifications

2 Introduction

3 Battery Care

4 Description of Controls and Connectors

5 Operation

6 Programming the Radio

7 Sst-444 Theory of Operation

9 Sst-444 Voltage Chart

10 Sst-444 Schematic Reference Parts List

11 Sst-444 Case Assembly Parts List

Ritron SST-444 Owner's Manual (16 pages)

Table of Contents

Ritron SST-444 Operational Description (15 pages)

Table of Contents

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