EARMARK VALCOMM 900 Owner's Manual

V ACCESSORIES
A. HARD HAT MOUNTS
If you need to wear a hard hat, you should equip your ValComm 900 Headset with
Earmark's hard hat and hard hat brackets. Supplied as a package, the wide hard hat with
ratchet suspension and the spring mount headset adapters assure the best fit and
comfort. This option imust be installed by an Earmark professional. It cannot be installed
in the field. Contact Earmark for further information.
VI MAINTENANCE
A. REPLACEMENT PARTS
From time to time all devices need refreshing, especially soft parts such as headband
pads, windscreens, and earmuffs. Replacement parts are available from Earmark
directly or at our website www.earmark.com under "Order Parts". Please specify your
Headset model when ordering.
B. SERVICE
Earmark has a full time service staff ready to perform maintenance on your radio.
Whether in warranty or not, all radios are repaired quickly and professionally. Contact
Earmark for more information or go to our website at www.earmark.com/service.
SPECIFICATIONS
GENERAL
Performance specifications are nominal unless otherwise specified and are subject to
change without notice.
General Frequency Range 902-928 MHz Std.
Operation modes Duplex, Half Duplex (PTT), Listen Only
Power Supply 3.6V NiMh internal rechargeable battery system/1800mah
Charger Output 6vdc @500ma into 2.1mm jack, Input 120vac@7.5w
Weight Approximately 19 oz.
Microphone Electret, 3k Ohm
TRANSMITTER
RF Output 10 mW
Spurious & Harmonics 67 dB
Modulation Sensitivity 3khz +- 0.5khz
S/N Ratio 45 db
APPROVALS AND AUTHORIZATIONS
FEDERAL COMMUNICATIONS COMMISSION
This headset complies with Part 15 of the FCC rules. Operation is subject to two conditions: (1) This
device may not cause harmful interference and (2) this device must accept any interference received
including interference that may cause undesired operation.
RECEIVER
Audio Distortion 2.5%
Sensitivity 110 dbm
DeModulation S/N 40 db
Selectivity 30 db
Squelch -12 db SINAD
Co Channel Rejection 14 db
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REV 03/2021
EARMARK
515 Fan Hill Rd., Monroe, CT 06468
Telephone 203-777-2130
OWNER'S MANUAL
OPERATING INSTRUCTIONS
FOR THE VALCOMM 900 HEADSETS
I DESCRIPTION AND GENERAL INFORMATION
Your new Earmark ValComm 900 Headset provides
you with hands-free communication capability. It
has many features to assist in building your
productivity. Earmark Headsets are supplied in a
variety of models. Before going any further, please
check the name plate label on your Headset and
determine which of the below listed models you
have purchased.
MODEL NETWORK DESCRIPTION
VC900-HD FULL DUPLEX PAIR - VC900-HDA AND VC900-HD
VC900-HDA FULL DUPLEX HEADSET - USE WITH VC900-HDB OR VC900-BD
VC900-HDB FULL DUPLEX HEADSET - USE WITH VC900-HDA VC900-HL
VC900-HL LISTEN ONLY HEADSET (NO MICROPHONE)
VC900-HH HALF DUPLEX HEADSET - USE WITH VC-900-BD OR VC900-HG
VC900-HG REPEATING HEADSET - USE WITH VC900-HH OR VC900-HL
All the above models have certain features in common. Each has a variable
rotary volume control which is also the main power on/off switch. There is
also a battery condition indicator light on the back of every unit and with an
Earmark portable radio you always have the ability to actuate the
microphone with a push to talk (PTT) switch.
II SETUP
As received, your new Earmark ValComm 900 Headset is ready for use in a typical
iindustrial operating environment. Only a few items require your attention before you
start operations.
®
A division of
REDCO AUDIO INC.
www.earmark.com
p/n 400082
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