MODEL W10BT TRANSMITTER
maximum. Operation at greater distances -300 meters
(1,000 feet) or more-is often accomplished, but the
determining factors in each installation will be reflec-
tions, obstacles and interference.
The transmitter is supplied with a zippered carrying
storage bag and a small screwdriver for adjusting the
transmitter gain.
The Shure Model W10BT is a body-pack radio
transmitter for use in the Shure Wireless Microphone
System. Small, compact and lightweight, the W10BT is
human-engineered for reliable, unobtrusive operation.
The microphone connector and all operating controls
are located on the upper surface, and the controls are
differentiated in size and shape to minimize incorrect or
accidental movement. (The gain control is generally
only used in setup, and is therefore recessed on the rear
panel.) A rugged belt clip provides secure attachment to
a belt, pocket or waistband. The antenna, a short piece
of thin, highly flexible wire, is an optimum choice for
minimum visibility and maximum durability.
The W10BT uses a standard 9-volt transistor-radio-
type battery (alkaline recommended). This long-life bat-
tery is available everywhere, and replacement is easily
accomplished through a locking slide-off cover plate; no
screws or hinges are used. A battery test switch and
LED indicator provides information on battery condi-
tion.
T h e t r a n s m i t t e r o p e r a t e s a t a s i n g l e , c r y s t a l -
controlled frequency in the VHF-FM band between 150
and 216 MHz. A total of 15 frequencies, computer-
selected for interference-free operation, are readily
available, and other frequencies can be ordered on a
special basis. This means that a number of wireless
microphone systems can be operated in a single sound
installation, simultaneously and without intermodula-
tion problems.
The W10BT has a maximum output power of 50
milliwatts, based on Federal Communications Commis-
sion regulations. This means that the transmitter-to-
receiver-antenna distance should be kept as short as
possible, with about 150 meters (500 feet) considered a
DESCRIPTION
(see Figure 1)
ANTENNA: This is a flexible, 1/4-wave vertically
polarized antenna approximately 30 cm (12 in.) in length
and permanently attached to the bottom surface of the
transmitter. For proper operation, the antenna
must
be
in the vertical position, not coiled or bundled.
BATTERY (not supplied): Only alkaline (Duracell
MN1604 or equivalent) or heavy-duty nickel-cadmium
(8.4-volt) transistor-radio-type batteries should be used.
A fresh alkaline battery should provide approximately 8
hours of operation, and a fully charged nicad should pro-
vide 1-1/2 to 2 hours.
BATTERY COMPARTMENT: Slide-off cover exposes
the battery compartment.
BATTERY TEST Push-Button Switch:
Permits checking
the condition of the installed battery when the power
switch is on. The Battery Test LED Indicator will fail to
light if the battery is weak or dead (or if the Power switch
is off). Note that if the battery is tested periodically dur-
ing
use,
a n i m p e n d i n g b a t t e r y f a i l u r e c a n b e
detected:
the LED will fail to light at 7.25 volts. At that
time, approximately 1 hour of battery life remains
(alkaline batteries only).
BELT CLIP: Permits convenient attachment to the
user’s belt, waistband or other clothing.
GAIN HI/LO Slide Switch:
Selects the High Gain posi-
tion to boost the signal of low-output (low-impedance)
microphones, or the Low Gain position for high-output
(high-impedance) microphones or musical instruments.
Allows maximum modulation without clipping.
MICROPHONE JACK: This is a 4-pin, miniature, male
Tini Q-G connector designed to mate with Switchcraft
TA4F or equivalent connectors. A built-in 20-kilohm load
resistor provides proper matching for dynamic, ribbon or
condenser microphones. Connector pin 2 supplies
+5-volt bias voltage for condenser microphone phan-
tom powering. In addition to microphones with TA4F
connectors, Shure has available an adapter cable with a
standard XLR female connector for use with conven-
tional microphones (WA310), and a musical instrument
222 HARTREY AVENUE, EVANSTON, ILLINOIS 60202-3696 U.S.A.
l
TELEPHONE: (312)866-2200
l
CABLE: SHUREMlCRO
Copyright 1986, Shure Brothers Inc.
27A2313 (FH)
Printed in U.S.A.
