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SGC Smartuner SG-231 Installation And Operation Manual

Microprocessor controlled automatic antenna coupler
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SG-231
Smartuner
®
Microprocessor Controlled Automatic Antenna Coupler
Installation and Operations Manual
POWER
TOOLS
Getting the most from every watt of HF-SSB Power

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  • Page 1 SG-231 Smartuner ® Microprocessor Controlled Automatic Antenna Coupler Installation and Operations Manual POWER TOOLS Getting the most from every watt of HF-SSB Power...
  • Page 2 3 - 100 watts weatherproof case Cable: 10 ft. Power Cable ® 1-800-259-7331 10 ft. RG-58 coax The SGC Building, 13737 S.E. 26th Street, cable with PL259 No Compromise P.O. Box 3526, Bellevue, WA 98009 USA connectors Communications Phone: 425-746-6310 FAX: 425-746-6384 425-746-7173 ©...
  • Page 3 . SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 4 3. Coupler should come up in the bypass (un-tuned) state. 4. To tune, speak normally, whistle or use CW (CW is recommended). SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 5 5. Tuning should be done at full power. Clicking is heard. 6. When tuned, clicking stops and Green wire goes low. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 6: Table Of Contents

    4.4 Back Stay Antenna 4.5 Typical Installations 4.6 Apartment Loop Antenna SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 7 7.0 Coupler Configuration 7.1 Schematic Diagrams 7.2 Tuning Process SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 8 10.3 Transmitter Faults 10.4 A Final Pointer on Troubleshooting 11.0 Schematics SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...

  • Page 9: General Information

    Even the most experienced professional HF users will occasionally run into difficulty. Regardless of the level of your experience, SGC stands ready to offer you installation suggestions and help you resolve any aspect of Smartuner operation which is not entirely satisfactory. If you have a specific question, please send us a fax at our Bellevue, Washington (USA) headquar- ters.

  • Page 10: What Is An Antenna Coupler

    The coupler network configuration is of a π or L type; sen- sors continually monitor the state of the tuning and relay this information to the processor. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 11 When the same conditions are encountered again, re-tuning is accomplished within 20 millisec- onds by recalling the information from the non-volatile memory. Special software has been designed by SGC to allow accurate and fine tuning of the coupler. For software description, refer to the MicroTune™ section of the manual.

  • Page 12: Coupler Network Configuration

    (especially young children), pets, and small animals. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 13: Mechanical Design

    The best protection for a mobile installation is provided by the QMS (Quick Mounting System) which keeps the antenna coupler outside of a vehicle. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 14: Direct Weather Protection Installations

    If you need to install the antenna coupler more than 50 feet from the transmitter site, up to two extension cables may be used for a total of 75 or 100 feet. However, SGC does not recommend installing the Smartuner more than 100 feet from the transmitter because two losses must be considered.

  • Page 15: Upgrade Sequence

    • The second loss which must be considered involves the losses in the DC power and reset control line. At any distance other than the 10 foot cable which is supplied by SGC, we recom- mend that the DC voltage at the antenna coupler be measured, because if the coupler voltage drops below 10 volts, the coupler may not operate properly.

  • Page 16: Accessories 1

    S G - 3 0 3 High performance 9 foot whip antenna. This dual element antenna is designed for severe marine and land mobile service. SGC Part Number 55-27. S G - 3 0 7 — 1 to 60 MHz.

  • Page 17: Parts And Technical Support

    3.3 Technical Support Before contacting SGC for technical support, please take a few minutes to think through your installation and ask if there is anything obvious which you have overlooked in the installation. Check to make sure your ground system is both adequate and tight and that proper voltage is supplied to the coupler.

  • Page 18: Antenna Types

    B e p a t i e n t . Finding the reason for less than ideal system operation may take one telephone call or it may take several calls. Regardless of how complex the problem is, your SGC representative will be able to walk you through the process of solving your problem in a logical step-by-step manner.

  • Page 19: Antenna Selection

    These are only a few of the many possible methods of installation, and frequently a different configuration will be the best at a particular site. SGC’s long wire antenna, 60 feet in length, provides efficient operation on low frequencies and high frequencies alike. (SGC Part Number 55-10.)

  • Page 20: Back Stay Antenna

    Figures 4.5.1 through 4.5.11 show some typical installations for the auto- matic antenna coupler. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 21 Feed through insulator to truck Coupler Transceiver Vehicle Installation SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 22 GROUND LEAD 1.5M MAX GROUND ROD (3M) BASE INSTALLATION SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 23 Conduit for Ground Wire Radials control cable and coax SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 24 500 miles in the frequency range of 2 to 10 MHz. This configuration pro- vides optimum near-right angle reflection to the ionosphere for short range communications. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 25 SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 26 Although not our best recom- mendation, this antenna will provide a workable solution in some installations. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 27: Apartment Loop Antenna

    The wire gauge should not be less than 16 AWG with insulation. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 28 SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 29: Recreational Vehicle (Rv) Antennas

    The Smartuner will also match well the more common wire antenna from fuselage to vertical SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 30: Low Profile, Hidden And Covert Antennas

    • the paramilitary user who will wish to operate from a residence or commercial building without drawing attention to long range HF communication in progress. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 31 SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 32: Emergency Antennas 3

    For good emergency communications, you will only need 30-70 feet of antenna and a strongly built (Mylar or nylon) kite. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 33: Tactical Installations

    10-20 knot winds are almost always available when underway at sea. 4.10.2 Tactical Installations; Over the course of nearly 25 years of HF communications, SGC equipment has been used every- where from camel back in the desert to Antarctic expeditions. Along the way we have collected a number of tips to get maximum system performance from your radio system when you are operating in a tactical or disaster situation.

  • Page 34: General Notes On Antennas And Couplers

    In this situation, you may find some tuning holes. The antenna can be made a little SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 35: Steps To Antenna Installation

    The antenna system is a key part of the communication system. For satisfactory operation the SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 36: Antenna Location

    8. Make sure that the antenna is rigidly supported. The antenna will de-tune if it sags or sways. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 37: Ground Systems-General

    SGC always recommends that two grounding bolts with star washers be used to ensure no ground resistance is en-countered. Make sure that the grounding point is not insu- lated from other parts of the vehicle by non-metallic couplings, bushings, fiberglass panels, etc.
  • Page 38 Navtex, and Loran reception will improve as well if they are also tied into the ground system. Particular attention should be paid to any device which uses an electric motor. This means to SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 39: Base Station Grounds

    More frequently, a counterpoise system of radial wires must be used. SGC recom- mends the use of at least 8 to 12 radials bonded together in the center. If the antenna is at ground level, the radials should be buried a few inches below the surface.

  • Page 40: Antenna Coupler Mounting

    5.5 Antenna Coupler Mounting SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 41: Antenna Connection

    It is also necessary that the antenna is spaced at least 3 centimeters from the conducting surface. Sharp points in the lead-in wire should be avoided to prevent corona discharges. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 42: Installation Procedures

    SG-231 Manual 6. 0 In s t a l l a ti on P r oc e dures The following diagrams will assist you with installing the Smartuner with SGC equipment. 6.1 Installation with SG-2000 The SG-2000 is shipped with all necessary connectors for installation of a Smartuner™ and for installation of peripherals by means of the audio input/output jack on the rear panel.

  • Page 43: Installation On Alinco

    D. Once tuning has been accomplished; depressing <TUNE> button again will result in the 'TUNE' LED extinguishing indicating that a match already exits. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 44: Installation On Other Radios

    The unused wires should be terminat- SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 45: Weatherdeck Mounting

    The actual ground system should be as good as possible, as the ground is an integral part SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 46: Electrical Checkout

    The SG-231 should immediately sense the mismatch and switch to the tune mode to re-tune the antenna system. Since the algorithm must search SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 47: Alternate Electrical Checkout

    The SG-231 installation and tune-up are considered complete if the above tests have been successfully performed. The SG-231 will probably not be supplied from SGC with memory data appropriate to your installation, and the memory feature may not seem impressive at first. Allow the SG-231 to “learn”...
  • Page 48 Note: The light bulb may not come on immediately if the coupler has not yet been tune for that frequency. The light bulb brightness is greatest when the coupler is tuned for that frequency. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 49: Coupler Configuration

    In either case, the end of the network containing the shunt C element will be the higher impedance end of the network. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 50: Schematic Diagrams

    Similarly, a low line impedance will result in more output from the current sensor, result- SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 51: Vswr Detector

    CPU saves the settings in its EEPROM, which is addressed by the applied RF frequency. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 52: Initialization 5

    The default is: Tune From Memory: [yes]. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 53: Tuning Process

    3. Extensive tuning paths are used to test different antenna situations. The initial tuning of a new frequency (or switched antenna) will require up to two seconds. Any further tuning is SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 54: Program Description

    T h e r e c a l l e d d a t a i s t h e n t e s t e d f o r v a l i d i t y . If the data proves invalid, it is bypassed and SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331...

  • Page 55: Tuning Paths

    SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 56: Antenna Too Short

    The fre- quency is saved for future frequency comparison, and the computer reverts to the Stop mode. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 57: Antenna Too Long

    If in band operation is typical and duplex or simplex is the predominant mode of operation, then No is usually the better choice. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 58: Jp2-Tune From Memory

    The SmartLock Pro allows the operator to have additional control over the SG-231. It is not required for normal operation of the coupler. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 59: Tune, Tune Lock, And Reset

    If you change the ground, antenna, or supply voltage, you are bound to change the performance of the coupler. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 60 Particularly in automobiles and aircraft, a single ground connection that at least two ground bolt connections are used. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 61: Antenna Faults

    The coupler could not find a lock on several bands. After going through his installation carefully, the user called SGC for technical support. This user was nearing wits end. In working through the logical troubleshooting process with him, we discovered that he had used coaxial feed line from the insulator on the coupler to the antenna feed point.
  • Page 62 10,000 to 30,000 volts of RF SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...

  • Page 63: Transmitter Faults

    If you have a problem with the coupler finding a tuning solution, you should change one variable at a time. SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com...
  • Page 68 Marine Grounds 28 Marine Mounting 5 Mechanical Design 4 SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...

  • Page 69: Schematics 50

    Vehicle Grounds 27 VSWR Detector 38 What Is an Antenna Coupler 1 SGC Inc. SGC Building,13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © 1997 SGC Inc...
  • Page 70 QMS-7 will provide exceptional auto-tuning with any HF and VHF transceiver. ® SGC, Inc., P.O. Box 3526 , Bellevue, WA 98009 USA Tel: 425-746-6310 or 1-800-259-7331 Fax: 425-746-6384 E-mail— SGCMKTG@aol.com Website— http://www.sgcworld.com No Compromise Communications SGC reserves the right to modify specifications without notice.
  • Page 71 With SGC’s years of proven Smartuner technology and ® customer satisfaction, the SG-231 is the superior coupler for any application. 1-800-259-7331 ® SGC Inc. PO Box 3526, Bellevue, WA 98005 USA Tel: 425-746-6310 Fax: 425-746-6384 E-mail: SGCMKTG@aol.com Web site: http://www.sgcworld.com © August, 1997 SGC, Inc.

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