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Radio Shack 20-405 User Manual

Radio Shack 20-405
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20-405 / PRO-405
User’s Guide
Desktop Radio Scanner
Thank you for purchasing your Desktop
Radio Scanner from RadioShack. Please
read this user’s guide before installing,
setting up, and using your new scanner

Table of Contents

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Radio Shack 20-405 Specifications

General IconGeneral
TypeHandheld Scanner
Modulation TypesAM, FM
Channel Storage200 Channels
Power Supply4 AA batteries or DC adapter
BandsVHF, UHF, Air
Channel Steps5, 12.5 kHz
Selectivity6 dB at ±7.5 kHz

Summary

Package Contents

Scanner Features

Service Banks

Locate specific call types by searching preprogrammed frequencies.

Display Backlight

Enhances display visibility in low-light conditions.

Lock-out Function

Skip specified channels or frequencies during scanning.

Ten Channel-Storage Banks

Organize and store up to 200 channels in 10 banks.

Tune Function

Tune to new frequencies starting from a specified point.

SAME/FIPS Weather Alert

Alerts for weather events based on specific geographic codes.

Memory Backup

Frequencies remain stored even without power.

Scan Delay

Delays scanning for two seconds after a transmission ends.

Priority Channel

Scanner checks one channel every two seconds during scanning.

Data Cloning

Transfer programmed data to another scanner.

Real-time Signal Strength Indicator

Displays the relative strength of received signals.

Liquid-Crystal Display (LCD)

Easy-to-view display for programming and information.

Telescopic Antenna

Provides good reception for strong local signals.

Understanding Your Scanner

Channel Storage Banks

How channels are organized into 10 banks (20 channels each).

Service Banks

Preprogrammed frequencies for quick access to specific services.

Preprogrammed Service Bank Frequencies

Marine

Lists preprogrammed frequencies for marine communications.

Fire/Police

Lists preprogrammed frequencies for fire and police services.

Aircraft

Lists preprogrammed frequencies for aircraft communications.

Ham Amateur Radio

Lists preprogrammed frequencies for amateur radio bands.

FM Broadcast

Lists preprogrammed frequencies for FM radio stations.

Weather Channels

Lists preprogrammed frequencies for NOAA weather broadcasts.

Understanding the Keypad

Power, Volume, Squelch Controls

Explains the function of POWER, VOLUME, and SQUELCH controls.

Bank Search Keys

Describes keys for searching specific service banks (MAR, FD/PD, HAM, AIR, FM).

Weather/Skywarn Key

Accesses weather channels and the Skywarn function.

Understanding the Display

Display Indicators

Explains the meaning of various symbols and text on the display.

Additional Display Messages

Lists and explains special messages shown on the display.

Sub Bank Messages

Explains messages related to specific sub-banks within services.

Setup

Powering Your Scanner

Instructions for powering the scanner via AC or vehicle adapter.

Connecting Antenna, Headphones, and Speaker

Guides on connecting external devices and listening aids.

Basic Operation

Scanner Turn-on and Squelch Adjustment

Initial power-up sequence and squelch adjustment.

Programming and Managing Frequencies

Steps to program, search, store, and clear frequencies.

Scanning and Bank Management

Scanning stored channels, turning banks on/off, monitoring channels.

Listening to Service Banks

Accessing Marine and Weather banks.

Weather Alerts and Skywarn

Setup and use of weather alerts and Skywarn feature.

Delay and Lock-out Features

Setting scan delay and locking out unwanted channels/frequencies.

Reviewing Lock-outs

Managing locked-out channels and frequencies.

Priority Feature

Setting a priority channel for faster checks during scanning.

Key Tone Settings

Enabling or disabling the audible tone for key presses.

Advanced Operation

Data Transfer and PC Programming

Cloning scanner data and programming via PC.

Scanner Initialization and Preprogrammed Frequencies

Resetting the scanner and loading factory frequencies.

Preprogrammed Frequency Banks

Detailed lists of frequencies in the scanner's banks.

Additional Information

Troubleshooting and Birdie Frequencies

Solutions for common issues and identifying internal interference.

Legal, Care, and Specifications

Scanning legally, scanner care, and technical specifications.

Service and Warranty

FCC Compliance

Regulatory information regarding FCC rules.

Limited Warranty

Details on the limited warranty and claims.

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