Radio-shack 20-404 User Manual download pdf (Page 3)

Features

Key Lock – lock the scanner’s keys to help prevent

accidentally changing the scanner’s programming.

Liquid-Crystal Display –

easy to view and change

programming information.

Flexible Antenna with BNC Connector –

provides

good reception of strong local signals. You can also

connect an external antenna for improved reception of

distant or weak signals.

Three Power Options –

power the scanner using

batteries (rechargeable or non-rechargeable), external

AC power (using an AC adapter, not supplied), or DC

power (using a DC adapter, not supplied).

Your PRO-404 scanner can receive these bands:

Frequency Range Types of Transmissions

29–54 MHz 10-Meter Ham, VHF Lo,

6-Meter Ham

108–136.9875 MHz Aircraft

137–174 MHz Military Land Mobile, 2-

Meter Ham, VHF Hi

380–512 MHz UHF Aircraft, Federal

Government, 70-cm Ham,

UHF Standard, UHF “T”

Note: See “Speciﬁcations” on page 37 for more

information about frequency steps.

Understanding Your Scanner

Once you understand a few simple terms used in this

manual and familiarize yourself with your scanner’s

features, you can put the scanner to work for you.

Simply determine the type of communications you want

to receive, then set the scanner to scan them.

A frequency is the receiving signal location (expressed

in kHz or MHz). To ﬁnd active frequencies, use the

search function or consult an online resource such

as www.radioreference.com. You can also search the

Service Banks

, which are preset groups of frequencies

categorized by type of service.

When you ﬁnd a frequency, you can store it into a

programmable memory location called a channel,

Features

Your new PRO-404 Handheld Scanner lets you scan

conventional transmissions and is preprogrammed with

search banks of the most common frequencies used

by public service agencies. Service Banks are accessed

by pressing a one-touch search key—no complicated

programming required.

Your new scanner gives you direct access to over 25,000

frequencies, including those used by police and ﬁre

departments, ambulance services, aircraft, and amateur

radio services.

Your PRO-404 scanner also has these special

features:

Signal Stalker II –

a powerful tool to rapidly detect,

monitor, and store frequencies from nearby radio

transmissions.

Service Banks –

easily locate types of calls by searching

preprogrammed frequencies in separate marine, ﬁre/

police, aircraft, ham, and weather banks.

Display Backlight –

makes the display easy to read in

low-light situations.

Lock-out Function –

skip over speciﬁed channels or

frequencies when scanning or searching.

Ten Channel-Storage Banks –

group and store 20

channels in each bank (200 total channels).

Tune –

tune to new and unlisted frequencies starting

from a speciﬁed frequency.

SAME/FIPS Weather Alert –

displays the weather

event and sounds an alert for the speciﬁc cities or

counties you choose.

Memory Backup –

frequencies remain stored in

memory for an extended time even without batteries.

Scan Delay –

delays scanning for two seconds before

moving to another channel in order to hear replies.

Priority Channel –

set the scanner to check one

channel every two seconds while scanning.

Data Cloning –

transfer the programmed data to

another PRO-404 scanner.

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Radio-shack 20-404 User Manual Page 3

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