Channels
15 GMRS/7 FRS
CTCSS Codes
38 Sub-Audible Tones
Operating Frequency
UHF 462.5500 -
467.7125 MHz
Power Source
NiMH Battery Pack (BP38) or
4 AAA Alkaline Batteries
Range
Channels 8-14 up to 2 miles
Channels 1-7, 15-22 up to
6 miles
Battery Life
28 Hours typ. -
Alkaline Batteries
(5/5/90 duty cycle)
18 Hours typ. - NiMH
Battery Pack
Frequency Chart
Ch. Freq.
Cross Ref.
Ch. Freq.
Cross Ref.
1
462.5625 FRS & GMRS 1
12 467.6625 FRS 12
2
462.5875 FRS & GMRS 2
13 467.6875 FRS 13
3
462.6125 FRS & GMRS 3
14 467.7125 FRS 14
4
462.6375 FRS & GMRS 4
15 462.5500 GMRS 11
5
462.6625 FRS & GMRS 5
16 462.5750 GMRS 8
6
462.6875 FRS & GMRS 6
17 462.6000 GMRS 12
7
462.7125 FRS & GMRS 7
18 462.6250 GMRS 9
8
467.5625 FRS 8
19 462.6500 GMRS 13
9
467.5875 FRS 9
20 462.6750 GMRS 10
10 467.6125 FRS 10
21 462.7000 GMRS 14
11 467.6375 FRS 11
22 462.7250 GMRS 15
CTCSS Chart (Hz)
Code
Freq.
Code
Freq.
oF
OFF
20
131.8
1
67.0
21
136.5
2
71.9
22
141.3
3
74.4
23
146.2
4
77.0
24
151.4
5
79.7
25
156.7
6
82.5
26
162.2
7
85.4
27
167.9
8
88.5
28
173.8
9
91.5
29
179.9
10
94.8
30
186.2
11
97.4
31
192.8
12
100.0
32
203.5
13
103.5
33
210.7
14
107.2
34
218.1
15
110.9
35
225.7
16
114.8
36
233.6
17
118.8
37
241.8
18
123.0
38
250.3
19
127.3
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference
received, including interference that may cause
undesired operation.
Important:
Changes or modifications to this unit
not expressly approved by Uniden could void your
authority to operate this unit. Your radio is set up
to transmit a regulated signal on an assigned
frequency. It is against the law to alter or adjust the
settings inside the radio to exceed those limitations.
Any adjustments to your radio must be made by
qualified technicians.
To be safe and sure:
• Never open your radio’s case.
• Never change or replace anything in your radio
except the batteries.
Your radio might cause TV or radio interference
even when it is operating properly. To determine
whether your radio is causing the interference, turn
it off. If the interference goes away, your radio is
causing it. Try to eliminate the interference by
moving your radio away from the receiver. If you
cannot eliminate the interference, the FCC requires
that you stop using the radio.
Hazardous Environments:
Do not operate the
radio in hazardous environments. Explosion or fire
may result. Do not operate the radio near
unshielded electrical blasting caps.
Under certain conditions, radios can interfere with
blasting operations and may cause an explosion.
Turn your radio OFF to prevent accidental
transmission when in a blasting area or in areas
posted: "Turn off two-way radio." Construction
crews often use remote control RF devices to set
off explosives.
Care and Safety:
To clean the radio, use a soft
cloth dampened with water. Do not use cleaners or
solvents because they can harm the body of the
unit and leak inside, causing permanent damage.
Use a dry, lint-free cloth to clean the battery
contacts. Do not submerge the unit in water. If the
unit gets wet, turn it off and remove the batteries
immediately.
Dry the battery compartment with a soft cloth to
minimize potential water damage. Leave the battery
compartment cover off overnight to ensure
complete drying. Do not use the radio until the unit
is completely dry.
Important: Evidence of original purchase is
required for warranty service.
WARRANTOR: UNIDEN AMERICA
CORPORATION ("Uniden")
ELEMENTS OF WARRANTY: Uniden warrants, for
one year, to the original retail owner, this Uniden
Product to be free from defects in materials and
craftsmanship with only the limitations or exclusions
set out below.
WARRANTY DURATION: This warranty to the
original user shall terminate and be of no further
effect 12 months after the date of original retail
sale. The warranty is invalid if the Product is:
(A) damaged or not maintained as reasonable or
necessary, (B) modified, altered, or used as part
of any conversion kits, sub-assemblies, or any
configurations not sold by Uniden, (C) improperly
installed, (D) serviced or repaired by someone
other than an authorized Uniden service center for
a defect or malfunction covered by this warranty,
(E) used in any conjunction with equipment or parts
or as part of any system not manufactured by
Uniden, or (F) installed or programmed by anyone
other than as detailed by the owner’s manual for
this product.
STATEMENT OF REMEDY: In the event that the
product does not conform to this warranty at any
time while this warranty is in effect, warrantor will
either, at its option, repair or replace the defective
unit and return it to you without charge for parts,
service, or any other cost (except shipping and
handling) incurred by warrantor or its
representatives in connection with the performance
of this warranty. Warrantor, at its option, may
replace the unit with a new or refurbished unit.
THE LIMITED WARRANTY SET FORTH ABOVE
IS THE SOLE AND ENTIRE WARRANTY
PERTAINING TO THE PRODUCT AND IS IN LIEU
OF AND EXCLUDES ALL OTHER WARRANTIES
OF ANY NATURE WHATSOEVER, WHETHER
EXPRESS, IMPLIED OR ARISING BY
OPERATION OF LAW, INCLUDING, BUT NOT
LIMITED TO ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.THIS WARRANTY DOES
NOT COVER OR PROVIDE FOR THE
REIMBURSEMENT OVERPAYMENT OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow this exclusion or limitation
of incidental or consequential damages so the
above limitation or exclusion may not apply to you.
LEGAL REMEDIES: This warranty gives you
specific legal rights, and you may also have other
rights which vary from state to state. This warranty
is void outside the United States of America and
Canada.
PROCEDURE FOR OBTAINING PERFORMANCE
OF WARRANTY: If, after following the instructions
in the owner’s manual you are certain that the
Product is defective, pack the Product carefully
(preferably in its original packaging). Disconnect the
battery from the Product and separately secure the
battery in its own separate packaging within the
shipping carton. The Product should include all
parts and accessories originally packaged with the
Product. Include evidence of original purchase and
a note describing the defect that has caused you to
return it.The Product should be shipped freight
prepaid, by traceable means, to warrantor at:
ONE YEAR LIMITED WARRANTY
REGULATORY INFORMATION
WARNING!
Read this information before using
the radio. In August 1996 the Federal
Communications Commission (FCC) of the United
States with its action in Report and Order FCC
96-326 adopted an updated safety standard for
human exposure to radio frequency
electromagnetic energy emitted by FCC regulated
transmitters.
Those guidelines are consistent with the safety
standard previously set by both U.S. and
international standards bodies. The design of the
radio complies with the FCC guidelines and these
international standards.
Never allow children to operate the radio without
adult supervision and the knowledge of the
following guidelines.
WARNING!
It is up to the user to properly operate
this radio transmitter to insure safe operation.
Please adhere to the following:
Use only the supplied or an approved antenna.
Unauthorized antennas, modifications, or
attachments could impair call quality, damage the
radio, or result in violation of FCC regulations.
Do not use the radio with a damaged antenna.
If a damaged antenna comes into contact with the
skin, a minor burn may result. Please contact your
local dealer for a replacement antenna.
Body-worn Operation
This device was tested for typical body-worn
operations using the supplied belt-clip.
To maintain compliance with FCC RF exposure
requirements, Body-worn operations are restricted
to the supplied belt-clip.
For hand-held operation, the radio should be held
1 inch from the user's face. The use of accessories
that do not satisfy these requirements may not
comply with FCC RF exposure requirements and
should be avoided.
For more information about RF exposure, please
visit the FCC web site at www.fcc.gov.
RF EXPOSURE INFORMATION
Covered under one or more of the following
U.S. patents:
4,684,870 4,734,049 5,203,015 5,214,789
5,491,745 5,497,508 5,517,677 5,557,606
5,574,994 5,610,946 5,613,201 5,625,870
5,627,876 5,628,059 5,634,196 5,634,205
5,678,176 5,697,096 5,717,312 5,722,070
5,787,345 5,901,341 6,021,326 6,084,861
6,163,691 6,195,415 6,353,730
Uniden America Service
4700 Amon Carter Blvd. Fort Worth, TX 76155
(800) 297-1023, 7:00 a.m. to 7:00 p.m. CST,
Monday through Friday: 9:00 a.m. to 5:00 p.m. CST,
Saturday, Sunday and Holidays
(except Thanksgiving and Christmas).
© 2005 Uniden America Corporation
All rights reserved Printed in China
UTZZ01004ZZ
SPECIFICATIONS
Monitor Mode Feature
Your GMR638 radio allows you to listen for weak sig-
nals on the current channel at the press of a key.
To turn ON the Monitor Mode:
•
Press
mon
for brief listening, the
icon will
blink.
•
Press and hold
mon
for 2 seconds for
continuous listening. The receiver circuit will stay
open, and letting in both the noise and weak
signals.
To turn OFF Monitor Mode:
Press
mon
to return to "Normal" mode, and the
icon stop blinking.
Roger Beep
Roger Beep is a BEEP that is sent to notify the end
of transmission (PTT and VOX transmission). Roger
Beep can be heard through the speaker when Key
Beep is on. Roger Beep is transmitted even if Key
Beep is turned off. However, Roger Beep will not be
heard from the speaker.
To turn ON Roger Beep:
Press and hold the
▲
key while turning ON the
radio.
To turn OFF Roger Beep:
Press and hold the
▲
key while turning ON the
radio.
