Uniden PRO401HH User manual

PRO401HH
Handheld CB Radio
Printed in Vietnam
U01UT401ZZC(0)
© 2015 Uniden America Corp.
Irving, Texas

CONTENTS
INTRODUCTION.............................................................................1
FEATURES..................................................................................1
SAFETY NOTICE ........................................................................1
UNIDEN CONTACT INFORMATION...........................................2
INCLUDED IN YOUR PACKAGE ...................................................2
PARTS OF THE RADIO..................................................................3
SET UP............................................................................................5
INSTALL ANTENNA ....................................................................5
CONNECTING TO POWER ........................................................5
DC Power ............................................................................... 5
Battery Power ......................................................................... 5
LED Display............................................................................ 5
Low Power Indication ............................................................. 6
OPERATION AND MAINTENANCE ...............................................6
BASIC OPERATION ....................................................................6
CB COMMUNICATION CODES ..................................................6
MAINTENANCE...........................................................................7
TROUBLESHOOTING....................................................................7
SERVICE AND REPAIR INFORMATION.....................................8
SPECIFICATIONS...........................................................................8
GENERAL....................................................................................8
TRANSMITTER ...........................................................................9
RECEIVER ..................................................................................9
FCC PART 15 & IC COMPLIANCE ................................................9
ONE-YEAR LIMITED WARRANTY ..............................................11

1
INTRODUCTION
The PRO401HH radio is a mobile radio designed for use in the
Citizens Band (CB) Radio Service. It will operate on any of the 40 AM
frequencies authorized by the Federal Communications Commission
(FCC). Your radio features a superheterodyne circuit with Phase
Locked Loop techniques to assure precise frequency control.
FEATURES
►40 AM channels
►Condenser microphone.
► Ceramic lter: Delivers greater selectivity and reduces adjacent
channel interference.
►AGC (Automatic Gain Control) for a constant sound level.
►Automatic modulation control for a constant audio transmit
modulation level.
►Low distortion IC audio circuit.
►Automatic noise limiter to reduce pulse noise.
►TX Power select slide switch (HI = 4W; LOW = 1W)
►Antenna with BNC connector.
► External speaker jack and external MIC jack
►Jack for external power source and battery charger.
►Rechargeable (9 AA Ni-MH) or Alkaline (9 AA) batteries
►Internal battery select switch (alkaline or rechargeable)
SAFETY NOTICE
►Do not expose the PRO401HH to water or extreme temperatures.
►Do not leave batteries installed over a long period of time as
leakage may occur and cause damage to the radio.
►Never use different batteries from the ones suggested.

2
►Never use harsh chemicals to clean this radio. Use a damp soft
cloth.
UNIDEN CONTACT INFORMATION
You can get answers 24/7 at our website: www.uniden.com.
INCLUDED IN YOUR PACKAGE
If any of these items are missing or damaged, immediately contact
your place of purchase or Uniden’s Parts Department.
TX
BATT. LOW
EXTPWR
PRO401HH
MIC
MIC
HI
PRO401HH Radio
Antenna
DC Power Cable Other printed materials
Not shown: Wrist Strap

3
PARTS OF THE RADIO
1 Belt Clip
2 Battery Compartment
NOTE: A switch inside the compartment lets you select rechargeable
or Alkaline batteries.
3 Channel UP/DOWN
Selects which channel the radio will transmit or receive on.
4 Push to Talk
Allows you to transmit.
3
2
5
4
10
8
7
6
12
11
1
9
13

4
5 Antenna Jack
Connect the detachable antenna to this jack.
6 Squelch knob
Adjusts the level at which the radio squelches or suppresses weak
radio signals. To lter out weaker signals and background noise,
turn the knob clockwise to increase the squelch level. To decrease
the squelch level so you can hear weaker radio signals, turn the
knob counter-clockwise.
7 Volume Control
Powers on the radio and adjusts the volume.
8 Microphone
Speak into the microphone when transmitting.
9 Wrist Strap Slot
Connect the wrist strap to the belt clip.
10 Speaker Jack
Connects to an external speaker (not includerd). The internal
speaker is disabled.
11 Microphone Jack
Connects to an external microphone (not included).
12 13.8 V DC External Power Jack
Provides power to the unit. you can use external power sources
such as a car battery to power the unit and to recharge the Ni-MH
rechargeable batteries.
13 Transmit Power Switch (HI/LOW)
Select a power output level for transmission.
NOTE: FCC rules reserve Channel 9 for motorist assistance and other
emergency communications. Channel 9 should only be used
in situations where there is immediate danger to the safety of
individuals or the protection of property.
Make sure you have read and understood part 95 of the FCC
rules and regulations before using the transmitter.

5
SET UP
INSTALL ANTENNA
Install the included rubber antenna onto the radio.
The PRO401HH can also use any type of 50 Ω / 27 MHz band
antenna. Although a telescoping antenna might provide better
transmission and receiving, it is not as compact or easy to use as
the antenna included in the package.
CONNECTING TO POWER
Your PRO401HH can operate on DC power or batteries.
DC Power
1 Plug DC power cable into the PRO401HH.
2 Plug the other end into your vehicle’s cigarette lighter/DC power
conversion plug.
3 The red power LED is steady on when the unit is connected to
external power (not batteries).
Battery Power
You can use either 9 non-rechargeable alkaline batteries or 9
rechargeable Ni-MH batteries with this unit.
1 Open battery cover.
2 Set the internal switch to match the battery type you are using
[either alkaline or rechargeable (Ni-MH) batteries].
3 Insert the 9 batteries according to the directions indicated inside
the battery compartment.
4 Close battery cover.
LED Display
The LED display turns off after 1.5 seconds to conserve battery power.

6
It will also turn off 1.5 seconds after you close Squelch.
To see the display again, open Squelch.
Low Power Indication
The red LED blinks when battery power is low. Replace/recharge the
batteries or connect to a power source.
OPERATION AND MAINTENANCE
BASIC OPERATION
Turning the
radio on
Turn the Volume knob clockwise until it clicks and
the 7 segment LED comes on.
Turning the
radio off
Turn the Volume knob counter-clockwise until it
clicks and the 7 segment LED turns off.
Selecting a
channel
Press the Channel UP or DOWN button on the side
to move up or down the channel list.
Changing the
volume
Turn the Volume knob clockwise to increase the
volume; turn it counter-clockwise to decrease the
volume.
Transmitting
–Tune the radio to the channel you want to
transmit on, and listen to make sure the channel
is clear.
–Press and hold the PTT button.
–Hold the microphone about 2 inches away from
your mouth and speak in a normal voice.
–Release the PTT button to listen for a response.
NOTE: Make sure you have read and understood part 95 of the
FCC rules and regulations before using the transmitter.
CB COMMUNICATION CODES
The “10” code allows you to communicate easier in noisy
environments. The following table lists some of the most common
codes and their meaning.

7
CODE MEANING
10-1 Receiving poorly
10-2 Receiving well
10-3 Stop transmiting
10-4 OK - Understood
10-6 Busy - Stand By
10-7 Out of service - Leaving air
10-8 In service - Subject to call
10-9 Please repeat
10-10 Transmission completed - Standing by
10-13 Road advice - Weather conditions
10-20 What is your location?
10-33 Emergency trafc
10-36 Exact time
10-41 Switch to channel
10-62 Cannot receive - use phone
10-70 Fire at __________
10-200 Police needed at __________
MAINTENANCE
Clean the unit with a damp cloth only; never use harsh chemicals.
TROUBLESHOOTING
If your radio is not performing to your expectations, please try these
simple steps. If these steps don’t solve your problem, visit the Uniden
website (www.uniden.com) for troubleshooting and FAQ information.

8
PROBLEM: THINGS TO TRY:
Radio won’t turn on
(no power)
Check the radio’s power cord and all
connections.
Check the fuse in the radio’s power cord.
Check your vehicle’s electrical system.
Poor reception Adjust the squelch level.
Check the antenna, cable and connectors.
Background noise Adjust the squelch level.
Weak transmission
Check the antenna, cable and connectors.
Check the antenna grounding.
Check for corrosion on the connectors.
SERVICE AND REPAIR INFORMATION
►Save your purchase receipt for proof of warranty.
►When ordering parts, it is important to specify the correct model
number of this radio (PRO401HH).
►It is the user’s responsibility to make sure the radio is operating in
accordance with the FCC Citizens Radio Service regulations at all
times.
SPECIFICATIONS
GENERAL
Channels 40 AM
Frequency Range 26.965 to 27.405 MHz
Frequency Control Phase Locked Loop (PLL) synthesizer
Frequency Tolerance ±0.005%
Operating Temperature 14ºF to 131ºF (-10ºC to +55ºC)
Microphone Electret Type
Input Voltage 13.8 V DC nom, 10.9VDC – 15.6VDC
Current Drain TX full mod., 1.7A