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SGC Smartuner SG-237 Manual

Hf antenna coupler
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Includes SG-237 Porta, SG-237 PCB and QMS-37
August 2001

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Summary of Contents for SGC Smartuner SG-237

  • Page 1 Includes SG-237 Porta, SG-237 PCB and QMS-37 August 2001...
  • Page 2 The company keeps pace with equipment options, engi- neering developments, and design requirements. Its products are the most competitive in the entire long distance communi- cation market. SGC equipment is presently being used by the United Nations for inter-communications in developing coun- tries throughout the world.

  • Page 3: Table Of Contents

    15.0 QMS System……………………………………….. 38 16.0 Smartuner Application Comparison Chart………… 50 16.1 Smartuner Technical Comparison Chart………….. 51 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 4: Specifications

    Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 results may vary and SGC does not warrant any installation or any result. This manual is Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 subject to change without notice.

  • Page 5: Supplied Items

    Although the Smartuner is built very solidly, it is good installation practice to provide additional protection from the elements. SGC makes the following recommendations: 2.1 Marine Mounting The Smartuner should be located inside the house or under the aft lazaret on a sailboat.

  • Page 6: Desert And High Temperature Installations

    The TND line (white with black trace wire) can be connected to the Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.

  • Page 7: Tuning Process

    0 to 5v range, then fed to the processor's A to D converter port, and used within the micro-controller. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 8: Vswr Detector

    EEPROM, which is addressed by the applied RF frequency. This non- Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.

  • Page 9: Initialization

    The default is: Tune From Memory: [YES]. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 10: Tuning Process And Options

    Next, the VSWR is checked and the frequency measured. If the Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 11 Once saved, a test is made on JP1 to check if the Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 12: Tuning Paths

    2. At this point, series inductance is added until the antenna is no Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.

  • Page 13: Jp1-Tuning Elements Out During Receive

    JP3 in the Yes position. If operation is as expected, don't change it. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 14: Coaxial Output Application

    5.0 Coaxial Output Application SGC always recommends placing the antenna coupler as close as pos- sible to the base of the antenna - regardless of whether it is an SGC coupler or another brand. All SGC couplers can be operated with a co- axial cable output connection;...

  • Page 15: Optional Smartlock

    In this case, re-tuning is within normal operation of the coupler. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 16: Do-It-Yourself Light Bulb Dummy Load

    (NEVER test with the transmitter set on an emergency fre- quency.) Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 17 SGC recommends that you build the light-bulb dummy load with the following parts (although we have made one with an old light fixture and a makeshift version with just alligator clip leads and a light bulb): * AC socket to cable with a PL-259 connector (for transceiver)

  • Page 18: Five Golden Rules Of Hf Installation

    Smartuner Antenna Coupler Manuals This manual is produced as a guideline for the SG-237 antenna coupler. Perform- ance and results may vary and SGC does not warrant any installation or any re- sult. This manual is subject to change without notice.

  • Page 19: Selected Antenna Configurations

    At least three ground radials bands. longer than the flag pole Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 20 Isolator Radio head aircraft at one end. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 21 Coupler ground, noise rejection is en- Base Delta Loop hanced. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 22 Control cable RF Cable Base Dipole Installation Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.

  • Page 23: S T A N D A Rd Warranty

    SGC for a Return Material Authorization Number (RMA) and deliver the prod- uct back to SGC with this RMA number and written proof as to date of pur- chase. SGC will ship a new or repaired product to the buyer, reserving discre- tionary right to return a newer model that offers at least equal performance.

  • Page 24: Component Location / Schematics

    12.0 Component Location / Schematics Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 25 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 26 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 27 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 28 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 29 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 30 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 31 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 32: Sg-237 Porta

    Operator can use a ladder feed or end fed antenna. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 33 28 ft. wire be used, or a loop antenna 20 x 20 ft. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 34 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.

  • Page 35: Sg-237 Pcb

    However, we do not recommend use by those unfamiliar with HF technology. Because technical expertise is critical to achieving good operation of the SG-237, SGC limits sales of the SG-237 PCB to experienced HF professionals. Note that VHF or UHF basic physics differ substantially from HF.
  • Page 36 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 37 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 38: Qms System

    15.0 QMS System Introduction SGC’s QMS (Quick Mount System) is one of the many out- standing products manufactured by SGC, Inc. that incorporate the latest technological developments in both design and craftsman- ship. Featuring state of the art technology in microprocessor-...
  • Page 39 SG-307 antenna with a spring at the base. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 40 15.0.8 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 41 15.0.10 15.0.12 Top trunk mounting also represents a good low profile installation. 15.0.11 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 42 You may use rack, door, or trunk edges for secure mounting. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 43 The antenna can be rotated in any direc- tion with the four way QMS-37 mount. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...
  • Page 44 15.0.20 Close-ups of ground strap location and installation. 15.0.21 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 45 Always install coupler and antenna as far away as possible from the radio and engine as shown in the picture below. 15.0.22 Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 46: Installation Precautions

    The control cable consists of four wires: one RG-58 coax cable and three small wires (for connections, refer to the SGC coupler manual). 6. Refer to QMS system illustration for dimensions and mounting details. When you are confident that items 1 through 5 have been thoroughly checked, you are ready to install your antenna.

  • Page 47: General Installation Information

    General Installation Information The mobile communication tips found below apply to any mobile installation, not merely to the QMS or other SGC product. • For the best performance and radiation, always mount your antenna system on the highest part of the vehicle. Approximately 3 to 15 dB in radiation performance may be gained in simply re- positioning your antenna system from a low to a high point.
  • Page 48 To ensure it is properly strapped, grab the Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com © 2001 SGC, Inc.
  • Page 49 This treat- ment increases the life span of rubber products. Mailing: PO Box 3526, Bellevue, WA 98009 Shipping: 13737 SE 26th St., Bellevue, WA 98005 Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384 www.sgcworld.com • Email: sgc@sgcworld.com...

  • Page 50: Smartuner Application Comparison Chart

    SG-239 SG-237 SG-237 SG-237 SG-230 SG-231 SG-235 Porta Introduction Year 2001 1999 1999 1999 1987 1995 1992 SGC Catalog Number 54-22 54-19 54-18 54-20 54-12 54-17 54-15 Marine Commercial Radio Amateur Aviation Special Applications Portable Power Input Range 1.5-200 3-100...

  • Page 51: Smartuner Technical Comparison Chart

    Cable(s) (NOTE: All Terminals SGC cable, 9 feet SGC cable, 9 ft coaxial 10 feet RG-58 power cable, SGC cable, 9 ft coaxial and couplers require RF and coaxial and two power and two power wire 10 feet RG-58 coax cable two power wire input, and 12 volt lines only.
  • Page 52 Page 28 Page 28 Page 28 For mobile, portable and field applications QMS- - - - 37 Page 38 Page 38 Page 38 Page 38 All-inclusive mobile installation This manual is available for download at www.sgcworld.com © 2001 SGC, Inc.

This manual is also suitable for:

Smartuner sg-237 portaSmartuner sg-237 pcbSmartuner qms-37

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