EARMARK BELT-PAK 5 Series User manual
OPERAOPERA
OPERAOPERA
OPERATING INSTRUCTIONS FORTING INSTRUCTIONS FOR
TING INSTRUCTIONS FORTING INSTRUCTIONS FOR
TING INSTRUCTIONS FOR
SERIES 5 BELT-PAKSERIES 5 BELT-PAK
SERIES 5 BELT-PAKSERIES 5 BELT-PAK
SERIES 5 BELT-PAK TMTM
TMTM
TM RADIO RADIO
RADIO RADIO
RADIO
I DESCRIPTION AND GENERAL INFORMATION
Your new Earmark Series 5 Belt-Pak Radio provides you with
hands-free FM communications to suit harsh working condi-
tions. Your radio contains Earmark’s latest innovations in
hands-free wireless technology for tough environments like
high noise or Class A protective equipment. VOX130
TM
provides self-adjusting VOX that responds only to the human
voice and not to machinery noise. The front mounted PTT button
is easy to find without looking for it. Simple external controls
mean you spend less time fussing and more time getting the job
done quickly. The easy access Volume Control Knob makes it
easy to go from high noise to low noise and back again without
interruption.
Earmark manufactures Belt-Pak radios in a variety of models.
Before going any further please check the name plate label on
the back of the Belt-Pak and find out which of the models
below listed you have. Make certain your model number
matches the type of network in which you’ll be working.
MODELMODEL
MODELMODEL
MODEL NETWORK DESCRIPTIONNETWORK DESCRIPTION
NETWORK DESCRIPTIONNETWORK DESCRIPTION
NETWORK DESCRIPTION
PDB-5 DUPLEXDUPLEX
DUPLEXDUPLEX
DUPLEX UNIT FOR USE IN TWO MAN DUPLEX
NETWORKS ONLY
PSB-5 SIMPLEXSIMPLEX
SIMPLEXSIMPLEX
SIMPLEX UNIT FOR USE IN SIMPLEX NETWORKS
PRB-5 DUPLEX REPEATERDUPLEX REPEATER
DUPLEX REPEATERDUPLEX REPEATER
DUPLEX REPEATER UNIT: USE WITH REPEATER BASE STATION
(TRBS-1/x)
PHB-5 HALF-DUPLEXHALF-DUPLEX
HALF-DUPLEXHALF-DUPLEX
HALF-DUPLEX UNIT FOR USE IN HALF-DUPLEX NETWORKS
PGB-5 REPEATING REPEATING
REPEATING REPEATING
REPEATING UNIT FOR USE AS TOUR MASTER OR
HALF-DUPLEX MASTER
®
EARMARKEARMARK
EARMARKEARMARK
EARMARK
1701 Stratford Ave., Stratford CT 06615
Telephone (203) 777-2130 www.earmark.com
OWNERS MANUAL
400068
C. Duplex Repeater and Repeating Models
The VOX switch is on the top of the Belt-Pak / the PTT button is on the front. You can select
"Continuous Transmit" (VOX OFF PTT ineffective) or "VOX with PTT Over-ride" (VOX ON
PTT provides manual over-ride) as your two modes of operation.
D. Simplex and Half Duplex Model
The VOX switch is on the top of the Belt-Pak / the PTT button is
on the front. You can select "VOX mode" (VOX ON PTT provides
manual over-ride) or "PTT MODEL" (VOX OFF PTT must be
pressed to transmit) as your two modes of operation.
SPECIFICATIONS
GENERAL
Performance specifications are nominal unless otherwise specified and are subject to change without
notice.
General Frequency Range 72-76 MHz
Operation mode Simplex Duplex or Repeating
Power Supply 3.6V NiMh internal rechargeable battery system/1800 mah
Weight Approximately 20.6 Oz.
Dimensions 6 1/
2" x 3 1/
24" x 2
3/8"
'System hum and noise -50 dB
TRANSMITTER
RF Output 200 mw Simplex 100mw all other modes
Spurious & Harmonics -75 dB
Modulation 16 K0F3E
Frequency Stability (-30° C to +50° C) .005%
Voice Compressor Attack <1 ms; Delay 130 ms
VOX Threshold 6 dB below full modulation
VOX Characteristics Attack <1 ms; Delay 750 ms
RECEIVER
Receiver Circuit Dual conversion 1st IF Frequency
10.7 MHz 4 Pole Quartz Filter; 2nd IF 455 kHz 4 Pole
Ceramic Filter
Sensitivity 0.4µV for 12 dB SINAD
Modulation Acceptance 15 kHz
Selectivity 30 kHz from center frequency -55dB
Spurious & Image -47dB
Intermodulation Response -70 dB
Frequency Stability (-30° C to +50° C) .005%
APPROVALS AND AUTHORIZATIONSAPPROVALS AND AUTHORIZATIONS
APPROVALS AND AUTHORIZATIONSAPPROVALS AND AUTHORIZATIONS
APPROVALS AND AUTHORIZATIONS
FEDERAL COMMUNICATIONS COMMISSIONFEDERAL COMMUNICATIONS COMMISSION
FEDERAL COMMUNICATIONS COMMISSIONFEDERAL COMMUNICATIONS COMMISSION
FEDERAL COMMUNICATIONS COMMISSION
All Belt-Paks have been type accepted and certificated by the FCC for operation in Part 90 (Private Land
Mobile Services) in the 72-76 MHz band. All transmitters including Repeater Stations operate in the 72-76
MHz band with a power of 100 mW and modulation characteristics 16K0F3E. Type approval numbers are
on each unit. FCC rules require licensing by the purchaser. Requests for application forms or
information may be obtained from the FCC Gettysburg PA 17325.
PTT
Button
REVISED 08/2015
A division of
REDCO AUDIO INC.
E. SQUELCHE. SQUELCH
E. SQUELCHE. SQUELCH
E. SQUELCH
Squelch is a receiver setting that determines how strong a radio signal must be before your
radio will recognize it. If squelch is wide open you will hear all the random atmospherics as
a loud annoying background hiss. If you set squelch too tight the radio will be insensitive
to weak signals. Setting squelch too tight reduces the effective range of your Earmark
radios.
Squelch is preset at the factory and should rarely need readjustment. If it does require
readjustment for any reason the process is quite simple. Remove the
sealing screw on the face of the Belt-Pak. Using a small screwdriver gently rotate the
internal potentiometer clockwise until you hear the squelch noise. Turn the "pot" back
counterclockwise until the noise just stops. Please replace the sealing screw when you’re
done. Setting the Squelch requires breaking the Belt-
Pak’s external seal. Make this adjustment in an area
that does not require intrinsic safety.
F. VOX OPERATIONF. VOX OPERATION
F. VOX OPERATIONF. VOX OPERATION
F. VOX OPERATION
Your new Earmark Belt-Pak radio has Earmark’s unique
technical innovation VOX130. VOX130 is fully
automatic continuously monitoring whether you are
speaking and turning the microphone on automatically
when it detects voice. If you have trouble using your
radio in VOX mode call Earmark on our toll-free help
line.
Hints for easy VOX operation:
When using a Boom Microphone always close-talk your microphone. Keep the
microphone within 1/4 inch of yourlips.
Earmark Boom Microphones are noise canceling. Each microphone has one side
that you talk into and one side that must point away from you. Always talk into the
red side of the microphone!
Speak louder than usual in level tones. Don't let your voice's volume fall off at the
end of a word or sentence. If you let your voice fall off VOX may drop out before
you're finished.
III CONTROLS and OPERATION
A. On/Off/Volume Switch (All Models)
The knob on top of the Belt-Pak is an On/Off/Volume control. Off is counterclockwise. To
turn the Belt-Pak On rotate the knob clockwise. Continue to rotate
clockwise for greater volume.
B. Battery Condition (All Models)
The red light on the Belt-Pak shows Battery Condition. As long as the LED
stays lit the battery is adequately charged. When the battery charge
degrades too much the LED will go out and you will hear a clicking noise
in your headphone. This means you only have a few
minutes of power left and should recharge your Belt Pak.
3
2
II SETUP
A. BATTERIES
Your Earmark Belt-Pak operates with built-in rechargeable NiMh batteries. This power
system should last 12-40 hours before needing a charge depending on network system
purchased (PSB longest lasting PDB shortest).
To recharge your Belt Pak plug the power supply that came with your unit into the charging
jack on the side of the Belt Pak. A charge session of 7-8 hours should completely charge
your batteries. The amber LED next to the charging jack will stay lit as long as the charger is
attached and is functioning.
B. CHANGING FREQUENCIES
Your Series 5 Belt-Pak comes with 10 sets of frequencies loaded. You can easily choose a
different frequency combination by turning the rotary switch located on the side of the Belt
Pak to the frequency channel number that you want (0-9). When you do this the Belt Pak
will begin operating at the new frequency combination immediately.
C. COMFORT FEATURES
TheBelt-Pak comes with an industrial strength wire bale used to attach the Belt-Pak to your
belt.
D. HEADPHONE CONNECTIOND. HEADPHONE CONNECTION
D. HEADPHONE CONNECTIOND. HEADPHONE CONNECTION
D. HEADPHONE CONNECTION
When you purchased your Earmark Belt-Pak you selected
one of several available headphones. All these connect to
the Belt-Pak by snapping the Nexus headphone connector
onto the pin on the top of the Belt-Pak. No adjustments are
necessary. The Strain and bend relief are integral with the
connector. Do not attempt to tighten or loosen this assem-
bly. The following headphones are available as accessories
for Earmark Series 5 Belt-Paks:
D e s c r i p t i o nD e s c r i p t i o n
D e s c r i p t i o nD e s c r i p t i o n
D e s c r i p t i o n Model No.Model No.
Model No.Model No.
Model No.
Headphone cord
pin connector
Battery
Indicator
Light
On/Off/Vol.
Switch
VOX
Option
Noise Reducing Headphone with Boom Microphone
Light Weight Behind Head Dual Muff with Boom Microphone
Light Weight Single Muff with Boom Microphone
Light Weight Wire-form with Boom Mic
BH-5 FC-41 SP-5 FC-4
FC-4
SP-5
FC-41
BH-5
