Uniden PRO538HHFM User Manual

Uniden PRO538HHFM

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PRO538HHFM

Handheld CB Radio

Printed in Vietnam

U01UT433ZZA(0)

© 2022 Uniden America Corp.

Irving, Texas

Questions and Answers:

K
Kenneth SanchezJul 30, 2025
Why is my Uniden PRO538HHFM reception so poor?
- M
  Michelle YoungJul 30, 2025
  Poor reception can occur if the transmitting and receiving radios do not match (AM-AM or FM-FM). When using the radio in a car, ensure you use an external antenna mounted on the outside. Also, CB radio waves are significantly weakened in a car, so Uniden does not recommend using the whip (rubber) antenna in the car. Check the RF Gain setting. CB radios can pick up noise from computer-related equipment and power lines, so keep the radio as far away from these objects as possible.
D
Daniel McdowellAug 6, 2025
How to fix Uniden Radio when it won’t turn on?
- J
  John ThompsonAug 6, 2025
  If your Uniden Radio won’t turn on, verify the polarity of the batteries in the battery case. Also, check the fuse in the cigarette plug. When installing the In-Vehicle adapter, be sure the side latch is locked.
A
Amanda SilvaAug 14, 2025
What to do if Uniden PRO538HHFM Radio transmission is weak?
- M
  Megan CaldwellAug 14, 2025
  Weak transmission can occur if the whip antenna and the outside antenna are connected simultaneously. Check the transmission power settings.
J
Jacob BryantAug 21, 2025
How to reduce background noise on Uniden PRO538HHFM Radio?
- K
  kaylasanchezAug 21, 2025
  To reduce background noise on your Uniden Radio, try turning on ANL. This might slightly reduce the audio level but can attenuate the noise.

Uniden PRO538HHFM Specifications

General

Brand	Uniden
Model	PRO538HHFM
Category	Radio
Language	English

Summary

Introduction to the PRO538HHFM Radio

Safety Notice

Uniden Contact Information

Included in Your Package

Radio Component Identification

Technical Definitions

LCD Display Guide

Radio Setup and Installation

Antenna Installation

Instructions for attaching the rubber or external antenna.

Powering the Radio

Radio Operation Guide

Basic Radio Usage

Step-by-step guide to basic radio functions.

Emergency Channel Operation

Dual Channel Monitoring

Setting Up Dual Watch

Steps to set up monitoring two channels simultaneously.

Automatic Noise Limiter (ANL)

Weather Channel Reception

Radio Maintenance

Troubleshooting Common Issues

Service and Repair Procedures

Channel Frequency Information

CB Channel Frequency Table

Table of CB channel numbers and their frequencies.

Technical Specifications Overview

General Radio Specifications

General specifications like channels, mode, and frequency range.

Transmitter Specifications

Receiver Specifications

FCC and ISED Compliance

FCC and ISED RF Exposure Statement

FCC 20cm Exposure Statement

ISED Antenna Approval Statement

One-Year Limited Warranty Details

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