Midland ALAN-42 DS User Manual

Adjustment Procedures for the ALAN-42 DS
1.Band setting for the production mode.
1).Turn off the radio.
2).Make Link for production mode as below.
Link S1 S2 S3 S4 Results
13 1 1 1 1 Production Mode For factory
3).Press the SCAN + AM/FM key and hold.
4).Turn on the radio.
5).The radio go to production mode. At this time the LCD display” Pd” display on the LCD, and go to Channel 1.
6). Turn off the radio.
7). Make Link as below to shipment for the default band.
Link S1 S2 S3 S4 Results
1 0 0 0 0 I, I2, d4, EU, EC, E, F, PL, UK Default band
8). Turn on the radio to adjustment.
Even if link to default band, keep the production mode until factory reset.
1-1. Table of Link.
Link S1 S2 S3 S4 Results
1 0 0 0 0 I, I2, d4, EU, EC, E, F, PL, UK Default band
2 0 0 0 1 I, I2, d4, EU, EC, E, F, PL, UK, PX
3 0 0 1 0 I, I2, d4, EU, EC, E, F, PL, UK, RU
4 0 0 1 1 I, I2, d4, EU, EC, E, F, PL, UK, PX, RU
5 0 1 0 0 Only KSA
6 0 1 0 1 Only EC
7 0 1 1 0 AU, AM
8 0 1 1 1 I, I2, d4, EU, EC, E, F, PL, UK, PX, RU, SW, AU, NZ
9 1 0 0 0 Only RU
10 1 1 0 0 RU, PC
11 1 1 0 1 Only E
12 1 1 1 0 Only NZ
13 1 1 1 1 Production Mode For factory
"0" = closed, "1" = open

Midland ALAN-42 DS Specifications

General

Frequency Range	26.965 - 27.405 MHz
Channels	40
Operating Mode	AM/FM
Antenna Impedance	50 Ohms
Output Power	4W

Summary

Band Setting and Production Mode

Production Mode Link Configuration

Default Band Link Configuration

Adjustment Procedures Overview

Adjustment Location Diagrams

Component Locations for Adjustments

VCO Adjustments

VCO Lock Voltage Adjustment

Procedure and parameters for adjusting VCO Lock Voltage.

Transmitter Adjustments

Output Power Adjustments

Adjusting transmitter output power at 4W and 1W levels.

Harmonics Adjustment

Procedure for adjusting harmonics for transmitter output.

Frequency Adjustments

Adjusting transmitter frequency for standard and UK bands.

AM Modulation Adjustments

Adjusting AM modulation for transmitter output at 4W and 1W.

FM Deviation Adjustment

Adjusting FM maximum deviation for transmitter output.

Signal Meter Adjustments

Adjusting signal meter readings for transmitter output at 4W and 1W.

Receiver Adjustments

AM Audio and Sensitivity Adjustments

FM Audio and Sensitivity Adjustments

Squelch Adjustments

Signal Meter and Noise Blanker Adjustments

Factory Reset Procedure

Default Link Setting for Reset

Factory Reset Execution