Midland Base Tech III User Manual

OPERATOR'S MANUAL
BASE TECH III BASE/REPEATER STATION
P25/ANALOG
December, 2006

Midland Base Tech III Specifications

General

Brand	Midland
Model	Base Tech III
Category	Accessories
Language	English

Summary

User Interface

LCD Display

Details the LCD display layout, character capacity, and status indicators.

LED Display

Explains the function of the five LEDs: DIGI, REP, ALM, TX, and BUSY.

Key Controls

Key Functions (No Shift)

Describes functions of keys without SHIFT, including number keys, A, B, C, D, *, #, CH, F(Scan), MON.

Key Functions (With Shift)

Details functions accessed via SHIFT key: 0-9, A-D, *, #, CH, F(Scan), MON.

Programming

PC Programming

Explains how to program the Base Tech III via PC, including data transfer modes.

Recovery Mode

Describes the procedure to recover the radio when programming software fails.

Adjustments and Controls

Volume Control

Details how to adjust volume level using the rotary knob, from VOLO to VOL-34.

Squelch Control

Explains how to adjust squelch level using the rotary knob, from SQL-1 to SQL-15.

LCD Backlight Dimmer

Describes adjusting LCD backlight level (DIM-0 to DIM-15) via the rotary knob.

Channel Operations

Channel Selection

Details selecting channels from 1 to 500 using CH and number keys.

P-25 Squelch Control

Explains P-25 squelch modes: Normal SQ and Selective SQ.

P-25 Mode Operations

P-25 PTT Mode

Describes selecting PTT mode for analog or digital transmission.

P-25 Calling Selection

Explains P-25 calling modes: Group Call (GP), All Call (AL), and Individual Call (ID).

Individual Call

Details setting up individual calls using target numbers or IDs.

Group Name (TGID Name)

Shows how group names (max 8 characters) are indicated for TGID.

Status and Security

Key Lock

Explains how to lock/unlock keys using SHIFT+8, and its limitations.

Channel Status Data

Details how to check Rx/Tx width, base mode, and CTCSS/DCS status.

P-25 Status Data

Shows how to view P-25 status: Unit ID, RX NAC, TX-NAC, and TGID.

Bar Graph/ Channel Display

Explains how to display frequencies, band type, and mode using SHIFT+CH.

Operational Features

LCD Backlight Hold

Describes how to enable/disable LCD backlight hold using SHIFT+1.

Changing TX Power

Explains how to select High/Low TX power using SHIFT+2.

Caller ID Display

Details how the radio displays caller's Unit ID or Individual ID.

Emergency Call Reception

Describes how the radio indicates emergency calls and displays caller ID.

Repeater Mode

Explains automatic repeater functionality for digital and mixed modes.

Remote Control

Details how to control the radio remotely via EXT/CH signals, max 16 channels.

Testing and Diagnostics

P-25 Test Mode

Covers various P-25 transmitter test patterns: test, symbol rate, low deviation, C4FM, tone.

Adjust Mode

Details adjustable parameters like RX 0dbm Out, RX FX828 MOD-1, TX DIGITAL DEVI, TX ANALOG DEVI.

Key Test

Explains how to enter Key Test mode and test individual keys and rotary switches.

Information and Status

Displaying Firmware Version

Shows how to view firmware and DSP software versions on startup.

Displaying Serial Number

Details how to display the radio's serial number using key presses on startup.

Displaying Program Software Version

Explains how to display the programming software version via key press on startup.

Data Check

Describes the self-diagnostic function that checks EEROM data on startup.

Troubleshooting and Error Handling

Error Displays

Explains error indicators (ALM LED) for faulty units like RX PLL, TX PLL, or PA.

Firmware Error Detection

Describes automatic main CPU restart upon detecting internal firmware malfunctions.

RS232 Error Detection

Lists common RS232 communication error messages shown on the LCD.

DSP Error Detection

Details LCD messages for DSP issues: Failure, Not Ready, Serial Error.