SG-231 MANUAL
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
© 11/00 SGC, Inc.
P.O. Box 3526, 98009 Fax: (425) 746-6384 Tel: (425) 746-6310
E-Mail: [email protected] Website: www.sgcworld.com
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D. When the SG-231 has finished tuning, the 'TUNE' indicator on the
DX-70 will extinguish.
6.3 Installation on other Radios
The SG-231 requires only a source of +12 VDC, an RF transmission line (RG-58/U up to
30 ft., RG-8 OR RG-213/U if over 30 ft.), plus suitable ground and antenna systems. No
band switch information, low power tuning, or handshake is required, since the coupler
tunes on RF voice or carrier. Power consumption is normally less than 1 amp, allowing
for use of small gauge wire. The PCB is fully protected against power reversal. The
output for a remote mounted tune indicator, if desired, is strictly optional.
When installing your SG-231, remember to allow for the power to be disconnected from
the battery during periods when equipment is not being used. This will prevent
draining the battery unnecessarily.
6.4 SmartLock Pro Installation
The SmartLock Pro is an accessory for the SG-231. This gives the user additional control
over the coupler. It is not required for normal operation of the coupler and does not
need to be installed. It allows the coupler settings to be held in place so no tuning or re-
tuning will occur, has an LED indicator which will light when the coupler is tuned, and
provides a manual reset of the coupler without turning the power off and on.
Connections:
SmartLock Pro
to
SG-231 Smartuner
Red
-
J1-1 Red wire (
+12 VDC
)
Green
-
J1-3 Green wire (
Remote tuned indicator line)
White
-
J1-5 White wire (
Hold Settings)
Blue
-
J1-4 Blue wire (
Reset)
Black/drain -
J1-2 Black (
Ground
)
The other wires are not used. We recommend soldering the wires together and
insulating the exposed wires with heat shrink or electrical tape; however, other
methods may suffice as long as the connections are firm and there is no exposed
wiring. The unused wires should be terminated in a manner that leaves no
exposed wires. A schematic drawing is provided as an aid to understanding the
operation of the SmartLock Pro.