User's Manual

CST-703/V COVERT
VOICE TRANSMITTER
DESCRIPTION
The Tactical Technologies Inc. Model CST-703/V is a miniature one
channel synthesized VHF Voice Transmitter capable of standard
operation between 150 MHz and 174 MHz. Output power is vari-
able; dependent upon variable input voltage. The 703 comes
standard with an external antenna, internal microphone, external
microphone connection, a programming cable, and various configu-
rations of power connectors. The 703 can be installed in a wide
variety of disguises.
OPERATION
1.) Select desired input voltage vs. power output from the following
chart:
INPUT VOLTAGE OUTPUT POWER
6.0 VDC approx. 1/4 watt
9.0 VDC approx. 1/2 watt
WARNING: Do not apply 12 VDC directly to this unit. A special
regulator cable must be used.
Any power supply (batteries, regulated supply, etc.) can be applied to
the CST-703 with voltages that range from 6 volts DC to 9 volts DC.
2.) Connect the external antenna to the CST-703 by inserting the
male end of the SMC type antenna connector on the transmitter to
the female connector end on the bodywire antenna. Twist the
connector clockwise to tighten (HAND TIGHT ONLY!).
3.) Determine which microphone configuration is best for your
application: the internal microphone or the external microphone.
a.) If the external microphone is desired, insert the male
end of the locking mini-plug type connector on the microphone cable
into the female connector found on the transmitter. Twist the cable
end connector clockwise to tighten and lock down to the transmitter
(HAND TIGHT ONLY). Once the external microphone is connected
to the 703, the internal microphone is electronically disconnected
and will not operate - eliminating any chance of the internal micro-
phone interfering with the desired external unit.
b.) If the internal microphone is desired, simply make sure
the external microphone is disconnected from the 703. The internal
microphone automatically becomes operational when the external
microphone is disconnected.
4.) Connect the appropriate power lead to the transmitter. Insert the
male end of the 4 pin mini type connector attached to the power
cable into the female end found on the unit. Twist clockwise to
tighten (HAND TIGHTEN ONLY!).
NOTE: THE CST-703 IS REVERSE POLARITY PROTECTED,
HOWEVER PLEASE BY SURE TO CONNECT THE + AND -
LEADS TO YOUR POWER SUPPLY CORRECTLY FOR PROPER
OPERATION OF THE TRANSMITTER. PAY PARTICULAR
ATTENTION TO THE MARKINGS ON SMALL BATTERIES.
WHEN USING THE FLYING LEAD CONNECTORS. THE
BLACK LEAD IS NEGATIVE AND THE RED OR WHITE LEAD
IS THE POSITIVE.
5.) Once power is applied to the transmitter, the unit is on and
operating. To turn the unit off, simply disconnect the power.
INSTALLING YOUR SOFTWARE
1.) The computer program supplied to install the frequencies into
your CST-703 transmitter is a module written for Microsoft's Hyper-