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General| Channels | 16 |
|---|---|
| Input Voltage | 13.8 VDC |
| Operating Temperature | -30°C to +60°C |
| VHF/UHF | Yes |
| Frequency Range | 136-174 MHz |
Outlines the manual's contents and intended audience for the SVR-250 synthesized vehicular repeater.
Notes potential changes and updates to the service manual for the SVR-250.
Essential safety precautions and guidelines for operating and servicing the SVR-250.
Details FCC compliance, licensing requirements, and relevant rules for the SVR-250.
Technical specifications for the SVR-250 transmitter across different frequency bands.
Technical specifications for the SVR-250 receiver across different frequency bands.
Electrical power requirements for the SVR-250 during standby, receive, and transmit.
Physical dimensions, weight, and case material of the SVR-250 unit.
Overview of vehicular repeaters and the SVR-250's role in cross-band communication.
Critical notes regarding CTCSS, squelch, and multi-vehicle format use for the SVR-250.
Explanation of the SVR-250's two multi-vehicle priority formats.
Details on the SVR-200 legacy priority format and its vehicle hierarchy system.
ESP functionality for determining repeater priority during idle time between conversations.
Allows local mic input to repeat transmissions and monitoring via speaker jack.
How the SVR-250 interfaces with trunking mobile radios for voice channel acquisition.
Programming the SVR-250 for emergency operation with CTCSS tones or DCS codes.
Using dual CTCSS/DCS for interference elimination and co-channel operation.
How the auxiliary receiver provides mobile COR for non-priority units in half-duplex systems.
Programming options for wide/narrow band operation and channel step sizes.
Configuration for a short beep to confirm user range after portable-to-base transmissions.
Setting the SVR-250 to revert to the last used or a pre-programmed home channel.
Configuration for full duplex operation, its requirements, and limitations.
Explanation of the front panel LEDs and their indications for SVR-250 status.
Description of jumpers J1-J13 and their impact on SVR-250 operation.
Wiring instructions for connecting the SVR-250 to the mobile radio via specific pins.
Detailed description of each pin connection on the SVR-250 interface cable.
Instructions for physically installing the SVR-250 unit in a vehicle.
Step-by-step procedures for aligning the VHF transmitter section of the SVR-250.
Step-by-step procedures for aligning the VHF receiver section of the SVR-250.
Detailed steps for receiver front end, squelch, and transmit audio adjustments.
Procedure to verify the lock tone decode functionality for the VHF receiver.
Step-by-step procedures for aligning the UHF transmitter section of the SVR-250.
Step-by-step procedures for aligning the UHF receiver section of the SVR-250.
Detailed steps for receiver front end, squelch, and transmit audio adjustments.
Procedure to verify the lock tone decode functionality for the UHF receiver.
Step-by-step procedures for aligning the 700/800/900 MHz transmitter section.
Step-by-step procedures for aligning the 700/800/900 MHz receiver section.
Detailed steps for receiver front end, squelch, and transmit audio adjustments.
Procedure to verify the lock tone decode functionality for the 700/800/900 MHz receiver.
Guide to using the SVR250CPS personalization software for configuration.
Explanation of file operations (Open, Save, Print, Exit) within the software.
Details on file name, number of channels, model, band, and polarity settings.
Configuration for Tx/Rx audio paths, power up channel, and local mic repeat.
Configuration of general purpose outputs, priority sampling, and emergency formats.
Setting Tx/Rx frequencies, squelch type, and codes for each channel.
Configuration for Tx sub-audible signaling, lock tone, PL encode, and emergency modes.
Settings for channel bandwidth (NB/WB), courtesy beep, and auxiliary receiver usage.
Procedures for sending and receiving configurations to/from the SVR-250.
Accessing context-sensitive help, about information, and remote tech support.
Overview of the ARS-250 auxiliary scanning receiver and its role.
Programming common data for the ARS-250, including file name, band, and scan speed.
Setting up receive frequencies, squelch types, and codes for ARS-250 channels.
Steps to install Atmel FLIP software and prepare the SVR-250 for flashing.
Detailed instructions for flashing the SVR-250 microprocessor with new firmware.
Detailed explanation of the receiver's superheterodyne design and RF stages.
Explanation of the VHF transmitter's architecture and RF output control.
Explanation of the UHF transmitter's architecture and RF output control.
Explanation of the 700/800/900 MHz transmitter's architecture and RF output control.
Description of power supply, voltage regulation, and bias circuits.
Explanation of audio processing for transmit audio and sub-audible signals.
Explanation of receive audio processing, filtering, and tone decoding.
Details on RF switching, automatic power control, and antenna connections.
Functionality of the front panel LED display and the microprocessor control.
List of capacitors, diodes, fuses, jumpers, and connectors with part numbers.
List of resistors, switches, ICs, and other components with part numbers.
List of cases, gaskets, screws, and heat sinks with part numbers.
List of components making up the SVR-250 front panel assembly.
List of physical parts for the front panel, including the case and knobs.
