sgc_sg2020_manual.pdf

Tr a n s c e i v e r

Installation and Operations Manual

“No Compromise Communications”

S G - 2 0 2 0

SGC — The SSB People

SGC develops, manufactures, and sells high performance single

sideband (SSB) communications equipment. Since 1971, the compa-

ny has sold to the marine, military, aviation, and industrial markets

world wide. Over these years, SGC has earned an outstanding reputa-

tion for product reliability and for service after sale.

The company keeps pace with equipment options, engineering

developments, and design requirements. Its products are the most

competitive in the entire long distance communication market. SGC

equipment is presently being used by the United Nations for

inter-communications in developing countries throughout the world.

Many competitive racing vessels, as well as fishing boats, tugs, and

commercial craft are equipped with SGC equipment. In fact, an SGC

radiotelephone provided the only communications available on a past

Polar expedition by the National Geographic Society.

SGC also supplies U.S. government agencies, several foreign gov-

ernmental agencies, and major petroleum companies through Asia

and latin America.

All SGC equipment is designed and manufactured in the USA. SGC

has qualified people ready to provide technical information, assis-

tance in selecting equipment, and recommendations for any installa-

tion.

SGC welcomes your call to discuss your SSB requirements.

SGC 2020 Staff

SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331

E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com

S G - 2 0 2 0

Tr a n s c e i v e r

Installation and Operations Manual

“No Compromise Communications”

Manual Version 2.01

Software Version 1.06

July 1999

SGC RESERVES THE RIGHT TO MODIFY SPECIFICATIONS WITHOUT NOTICE.

SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331

E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com

TABLE OF CONTENTS

1 . 0

F E AT U R E S

PAGE

2 . 0

I N T R O D U C T I O N

3 . 0

S P E C I F I C AT I O N S

4 . 0

INSPECTION UPON RECEIPT

5 . 0

MODES OF OPERAT I O N

6 . 0

I N S TA L L AT I O N

7 . 0

SG-2020 APPLICAT I O N S

1 2

8 . 0

FRONT PA N E L

1 7

9 . 0

S E C O N D A RY SWITCH FUNCTIONS

2 1

1 0 . 0

POWER ON OPTIONS

2 3

11 . 0

BARGRAPH DISPLAY

2 5

1 2 . 0

FRONT PANEL CONNECTO R S

2 6

1 3 . 0

REAR PANEL CONNECTO R S

2 7

1 4 . 0

CIRCUIT DESCRIPTION

2 9

1 5 . 0

AM BROADCAST RECEPTION

3 1

1 6 . 0

QUICK TOUR OF USER CONNECTO R S

3 3

1 7 . 0

ALIGNMENT / TEST PROCEDURES

3 6

1 8 . 0

EXCITER VO LTAGE MEASUREMENTS

3 9

1 9 . 0

PCB LAYOUT AND SCHEMAT I C S

4 5

2 0 . 0

C ATALOG ITEMS

6 6

G L O S S A RY

7 2

APPENDIX A

7 6

SG-2020 Transceiver Front

SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331

E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com

1.0 FEATURES

The SG-2020 is a compact low power transceiver with the features

and performance you expect in a modern full size transceiver.

•

Selectivity at 2.7 KHz not less than 60 dB rejection on the

adjacent channel

•

RF Speech processing

•

All Band Operation 160 mtrs through 10 mtrs.

•

General Coverage Receiver, 1.8 MHz through 29.7 MHz

•

Extended receive range from 400 kHz to 1600 kHz available

•

20 memories that are fully user accessible

•

Split, RIT / XIT capable

•

High performance baseband selectable digital filters

•

Single Sideband in USB and LSB

•

Full break-in operation in CW

•

Built in mode 'B' Iambic Keyer, adjustable from

5 to 60 WPM

•

Very low power consumption on receive,

less than 400 mA

•

Frequency Scan

•

Memory scan with adjustable dwell timing

•

DC Volt meter

•

Operational temperature range of -30 to +70º C

WARM-UP TIME

The SG-2020 is equipped with a thermistor resistor circuit designed to stabilize the

frequency. A warm-up time of 15 to 30 minutes is needed to achieve full stability. The

unit is fully operational during this time, but a drift of plus or minus 200 Hz may be noticed.

SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331

E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com

•

Strong, wide dynamic range receiver

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