User`s manual

SGC SG-500 SmartPowerCube™ User’s Manual, Page 3
SGC, 13737 SE 26
th
Street Bellevue, WA 98005 USA • Ph: 425-746-6310, Fx: 425-746-6384, Email: [e-mail]
www.sgcworld.com
SGC RESERVES THE RIGHT TO CHANGE SPECIFICATIONS WITHOUT NOTICE
 Copyright SGC 2007
Operating Modes: SSB, CW, RTTY, SITOR, ALE, SSTV, AM at 250 W
Dimensions: 4.9” H x 12.0” D x 10.8” W
(6.1” H and 13.2”D with feet)
(9.75” H with optional fan kit)
Case: Solid cast aluminum with matte black powder coat finish
Weight: 21 Pounds (9.5 Kg)
3.0 Cautions and Safety Considerations
Although you are probably anxious to get your SG-500 amplifier installed into your station and operating,
we highly recommend first taking a few moments to review the information presented in this manual. It
will help familiarize you with the proper preparation, installation, and operation of your new equipment.
The few minutes spent now will save you much time later when you begin the more involved process of
installation and getting on the air.
3.1 DC Power Supply Considerations
This amplifier is designed to be powered only from a high quality 14.0 VDC power supply providing
adequate reserve current capability for the desired operational application. At 500 Watts RF power, high
RF and DC current levels are present in and around equipment. We only recommend the use of high
quality linear power supplies designed for RF applications. We strongly advise against the use of a
switched-mode power supply for high RF application. Permanent damage to the power supply or other
station equipment may occur if an improperly designed switched-mode supply is used. It is also best to
use a separate, dedicated power supply for the exciter (transceiver).
A minimum of 40A, 14VDC is needed for SSB operation and 90A or better for carrier modes (AM, FM,
RTTY) or high duty cycle operation. In many cases, a battery can be paralleled or “floated” with a
charger or power supply for extended current reserve. However, please check with the manufacturer of
the power supply because high-current diodes are sometimes needed to accomplish this. SGC
recommends that only a 100-Ah, deep cycle marine/RV battery be used for this application. For
commercial or high duty-cycle operation, we recommend installing the optional SGC cooling fan kit for
continuous operation.
3.2 Safety Considerations
While all SGC equipment is designed with safety and ease of operation in mind, all safety and protective
considerations need to be adhered to. Follow the recommended installation instructions outlined later in
this manual. The 500 Watt RF energy can cause a painful burn to anyone coming into contact with a
radiating antenna element, whip or open transmission line. Ensure that no person or animal comes into
direct contact with the antenna or transmission line of your station.