3
a)
Unsolder the WHITE leads from switch terminals 7
and 8.
b)
Solder the WHITE leads together, and insulate the
connection.
c)
Unsolder the RED cable lead from terminal 3 and
solder it to terminal 8.
d)
Solder a jumper lead between terminal 7 and the
ground lug.
At the end of the cable, BLACK and BLUE leads are now
the isolated receive leads; the YELLOW lead is the
grounded receive lead; and the RED lead is the grounded
transmit lead.
VOLUME CONTROL
When the 526T Series II replaces a dynamic (usually low–
impedance) microphone supplied as original equipment, the
volume control should be set at the lower ranges to prevent
overmodulation and unintelligible transmission. Correct
modulation can be checked on the modulation level indicator.
When the 526T Series II replaces a ceramic (usually high-
impedance) microphone supplied as original equipment, the
volume control should be set at the upper ranges for correct
modulation as indicated on the modulation level indicator.
WARNING
Too high a volume control setting causes over-
modulation, interference, channel splatter, and
unintelligible voice transmission. Carefully check
the volume control setting.
LOCKING PRESS-TO-TALK SWITCH
The fingertip control bar of the press-to-talk switch can be
used in a momentary or locked-on position. For use as a mo-
mentary switch, depress the control bar and release after
transmission. To lock the switch in the On position, depress
the control bar and move it forward with the fingertips. To un-
lock the switch, move the control bar backward and remove
pressure.
Polar Pattern
Omnidirectional
Output Impedance
5,000 ohms
Load Impedance
500 ohms minimum
Output Level (At 1,000 Hz with 100 kilohm load)
Adjustable from 0.61 to 16 mV for 1 microbar input
Signal Handling Capability (With 50 kilohm load)
111 dB SPL at 1,000 Hz produces 1.0V with volume con-
trol at maximum
Battery Type
9 Vdc
Battery Drain
0.9 mA
Battery Life
300 hours minimum, replace after 1 year
Switches
Press-to-talk: Single-bar, momentary or locking, leaf-type
triple-pole, double-switch
Cable
2.1m (7 ft) five conductor, one-conductor shielded, rubber
jacketed, attached, coiled cable
Case
Black, high-impact ARMO-DUR
Dimensions
See Figure 3
Net Weight
920 grams (2 lb)
Packaged Weight
1.2 kilograms (2 lb. 11 oz)
