Adjustable
headstrap
Volume control
Push-To-Talk (PTT) button (red)
Radio Connection
The Firecom direct-wire headset plugs into the speaker mic jack on the handheld radio and
replaces any speaker mic that may be presently attached to the radio.
Proper Fit
When worn properly, this headset will provide significant hearing protection. If it is not worn
properly, the headset’s effectiveness in reducing harmful noise is severely compromised.
•
The length or vertical fit of the headset ear dome is adjusted by the headstrap. Adjust as
necessary to achieve a fit that ensures the headset ear dome completely covers the ear.
•
When switching between right and left dress, rotate the mic boom in an upward direction
ONLY,
as shown in the diagram below.
Rotating the mic boom in the wrong direction may damage the boom or wiring.
•
The metal headband should be rotated in an upward direction
ONLY,
as shown in the
diagram below
.
Damage to the headband cable may result from rotating the metal headband in the
wrong direction.
•
For maximum comfort, wear the headset as far back on the head as possible, while ensuring
the ear dome still completely covers the ear. If discomfort is felt in the jawbone, you are
wearing the headset too far forward.
Microphone Placement
Place the microphone in front of the mouth and
NO MORE
than 1/8" away from the lips as
shown in the diagram below. Placement of the microphone is
CRITICAL
for proper operation.
If the microphone is positioned incorrectly, you may experience a reduction in
volume and clarity of intercom and radio communication
.
Headset Volume
The volume of received radio communications is controlled primarily by the radio's volume
control. There is a volume control located on the ear dome of the headset for minor volume
adjustment.
Radio Transmit
The Firecom direct-wire headset has a red Push-To-Talk (PTT) button on the ear dome. Pressing
this button will key the radio. Press and hold the PTT while speaking into the microphone to
transmit on the radio.
Note:
In order to maintain contact, firmly depress the PTT switch until
you hear or feel a click.
Mic Muffs
The headset microphone is covered with a washable, replaceable foam mic muff. This mic
muff helps prevent the “pops” and “hisses” that can occur from speaking into a microphone
that is close to the mouth.
To clean or replace the mic muff:
1. Remove the o-ring.
2. Slip the mic muff off the microphone.
3. At this time, you can decide whether to clean
or replace the mic muff.
If you clean the mic muff, use a mild detergent, rinse it out well
and let it dry completely before re-installing it on the microphone.
4. Slide the mic muff on the microphone.
5. Install the o-ring on the mic muff to secure it.
Replacement mic muffs may be ordered from your local Firecom dealer.
Replacement Parts & Accessories
Description
Part Number
300 Ohm Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0008-00
Acoustic Foam Set, 3 pieces (internal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0027-00
Boom Assembly (flex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0015-00
Cloth Covers (a dozen pairs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0003-00
Ear Seals - Standard (pair) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0012-00
Grommet, Bend Relief (Comm Cable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .471-0002-00
Headstrap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0025-00
Mic Muffs with O-Rings (dozen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0004-00
PTT - Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108-0010-01
Volume Control, Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151-0001-00
Volume Control, Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .551-0001-00
Specifications
Headsets
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . 104dB re .0002 microbar @ 1000 Hz, 1 mW
Frequency Response . . . . . . . . . . . . . . . . . . . . . 100-17,000 Hz +5 dB in 6 cc coupler
Impedance . . . . . . . . . . . . . . . . . . . . . . 600 ohms nominal, 150 to 1200 ohm source
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19.6 oz.
Noise Reduction Rating (NRR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24dB
Mic muff
O-ring
Mic boom
Rotate the headband
ONLY
in an upward
direction as shown
Rotate the mic boom
ONLY
in an upward
direction as shown
Adjustable headstrap
No more than
1/8" from lips