Shure 526T Datasheet

2 2 2 HARTREY A V L , EVANSTON. I L. 6 0 2 0 4 U.S A.
DATA
MODEL 526T
a
AREA C O D E J I ~ / ~ ~ ~ - ~ O O O
.
CABLE. SHUREMICRO
SHEET
MICROPHONE
BASE STATION CITIZENS BAND POWER MICROPHONE
GENERAL
The Shure Model 526T SUPER PUNCH base station
power microphone is designed specifically for Citizens
Band transceivers and amateur radio applications. For
clearer transmission and improved reliability, this
transistorized microphone can be used to replace
ceramic or dynamic, high- or low-impedance, micro-
phones supplied as original equipment.
Model 526T provides crisp, undistorted voice re-
sponse with adjustable volume control for optimum
intelligibility of transmission.
The microphone is designed for base station opera-
tion with maximum versatility. It has a momentary or
locking press-to-talk transmitlreceive switch for great-
est ease of use, a modulation level volume control for
highest undistorted output with high- or low-imped-
ance inputs, and a NORMALIVOX selector switch for
press-to-talk or VOX-operated transceivers.
The microphone is not affected by heat or humidity
and it is outstanding in its ability to resist mechanical
shocks and vibration. Its exclusive ARMO-DUR@ case
is immune to oil, grease, fumes, salt spray, sun, rust,
and corrosion. The "Million-Cycle" leaf-type press-to-
talk switch is designed to withstand rigorous operat-
ing conditions and constant use.
Microphone Features:
Power microphone with transistorized preamplifier
Adjustable volume control for optimum transmitter
modulation and maximum intelligibility
Replaces either ceramic or dynamic original equip-
ment microphones
Excellent response for single-sideband transmis-
sion
Uses readily available 9-volt battery
-
low current
drain for long life
Low hum pickup, minimum susceptibility to RF
interference
m
Momentary or locking press-to-talk transmit1
receive switch
-
"Million-Cycle" leaf-type
NORMALIVOX selector switch for press-to-talk or
VOX-operated transceivers
Sturdy, high-impact ARMO-DUR case
Rugged and dependable under all operating con-
ditions
BATTERY INSTALLATION
Model 526T uses a 9 Vdc battery (Eveready 216 or
equivalent
-
supplied). To install the battery, proceed
as follows:
1. Loosen two screws (located underneath base)
holding battery retaining clip, and remove battery
retaining clip.
2. Connect terminal strap to battery.
3. Insert battery in VELCRO strap of battery retain-
ing clip and fasten VELCRO strap.
4. Insert battery retaining clip in base and tighten
screws securely.
CONNECTIONS
The internal connections of Model 526T are shown
in Figure 1.
INTERNAL CONNECTIONS
FIGURE 1
Model 526T may be connected to an amplifier, trans-
mitter, or CB transceiver with an input impedance of
500 ohms or more. Refer to the Shure CB Wiring Guide
enclosed with the microphone for detailed instructions
for connecting the 526T to your CB transceiver. If your
unit is not listed in the Guide, contact your dealer or
Shure Brothers Incorporated for information. This mi-
crophone is not designed for use with transceivers
requiring five-conductor shielded cable. Passage of
the 526T cable through small-diameter connectors
may be eased by lubricating the outer jacket of the
cable.
The general wiring procedure for transceiver con-
nections is as follows.
Copyright 1976, Shure Brothers
Inc.
27A1331 (PJ) Printed in
U.S.A.