Model
531
"super
talk
power"
MOBILE MICROPHONE
A
TOP
PERFORMER
AT
LOW
COST
,,VES
HIGH VAL,,.
,.,:
Amateur or Citizens
Band, mobile or
stationary communication applications. Has Super Talk Power.
Combines mobile styling and high performance. Response characteristic carefully calculated to
give maximum clarity and intelligibility. Complements the average energy curves for voice
transmission as published
by
Fletcher and others.
This
feature restricts band width of the radiated
signal, diminishes interference on adjacent channels and potential higher order harmonics. In-
herent design characteristic reduces background noise and feedback. Attractive, rugged and
dependable with unusually high output, the Model
531
is
fully shielded to minimize hum pickup.
FEATURES
and
SPECIFldATIONS
.
OUTPUT: -50dB below
1
voltlmicrobar.
RESPONSE: 150-3500 Hz with a 6
dB
rise in the 2000 Hz range.
.
IMPEDANCE: at 1000
Hz..
approximately 250,000 ohms (EIA
rating 100,000
ohms).
Elem~:~t capacitance 650pF
t
20%.
RECOMMENDED LOAD: Over
1
megohm.
-~
HIGH IMPEDANCE CERAMIC ELEMENT: Wide temperature
tolerance with immunity
to
humidity.
.
POLAR
PATTERN:
Semi-directional.
SWITCH: Press-to-talk DPDT spring return switch rhork the micro-
phone element in the "OFF" position and closer the relay circuit
in the
"ON"
position. Designed for long life and trouble free
performance, the switch can be easily operated using the micro-
phone in either hand.
.
CABLE: Three conductor (one conductor shielded) VINYL jacketed
coiled cord that extends to
5
feet.
Durable strain relief bushing
protects against cable breakage at entry
of microphpne housing.
.
HOUSING: Constructed of high impact molded Cycolac* plastic.
.
FULLY SHIELDED
.
MOUNT1
NG
BRACKET: Design permits mounting an a vertical or
horiwntai surface.
(See Reverse
Sida
.
SIZE:
3 3/8" high
x
2
3/8" wide x
1
5/16"
deep.
WEIGHT:
7
1/4
ounces.
sTradenarne
of
Borg-Warner
THE
ASTATlC
CORP.
MANUFACTURERS OF PHONOGRAPH CARTRIDGES
NEEDLES
.
PICKUPS
.
MICROPHONES
CONNEAUT, OHIO U.S.A.
44030
PHONE:
593-1
11
1
Area
Code
216
IN CANADA: Canadian Artatic, Ltd..
EXPORT
SALES: Marhan Exporting Corporation
1820
Ellerrnere Road. Scarborough. Ontario
27078
Newtown Road, Plainview. New
York
11803
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