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Midland 248 User Manual

Midland 248
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MIDLAND
248
Downloaded from www.cbradio.nl
Picture by www.neuner.de

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Midland 248 Specifications

Operating Environment IconOperating Environment
frequency range26.565 - 27.99125 MHz
duty cycleTX 5% - RX 5% - Stand-by 90%
operating temperature range-10°/+55° C
Power IconPower
dc input voltage12.6VDC ±10%
current drain at stand-by250mA
current drain max2500 mA
Receiver IconReceiver
sensitivity fm mode0.5µV for 20 dB SINAD
audio output power2.0 W @ 8 Ohm
audio distortionless than 8% @ 1 KHz
Transmitter IconTransmitter
output power4W max
modulation amfrom 85% to 95%
modulation fm1, 8 KHz ± 0, 2 KHz
Weight and Dimensions IconWeight and Dimensions
size180 (L)x50 (H)x150 (P) mm
weight1kg

Summary

Function and Location of Controls

Channel Selector

Selects the operating channel for the transceiver.

Microphone Jack

Port for connecting the microphone to the unit.

Multifunction Display

Shows channel, mode, and signal status information.

ON/OFF Volume Control

Turns the unit on/off and adjusts audio output level.

Rear Panel Connectors

Antenna Connector

SO239 connector for antenna connection.

S. Meter Jack

Allows connection of an external S-meter.

PA Jack

For connecting an external loudspeaker for PA function.

External Speaker Jack (EXT)

External loudspeaker jack, disables internal speaker.

DC Power Input

Power supply cable for the unit.

Microphone Controls and Connector

Details on PTT, UP/DOWN, LOCK buttons, and connector.

Installation Guide

Power Supply

Instructions for connecting the DC power supply and observing polarity.

Installing an Antenna

Recommendations for optimal antenna placement and connection.

Fuse Replacement

Guidance on replacing the DC power cord fuse with the correct type.

Operating the Transceiver

Frequency Band Selection

Procedure for selecting the correct frequency band for operation.

Technical Specifications

General Specifications

Covers channels, frequency range, operating temperature, and size.

Receiver Specifications

Details on receiving system, sensitivity, and audio output.

Transmitter Specifications

Details on output power, modulation, and frequency response.

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