SG-230 Smartuner ® Microprocessor Controlled Automatic Antenna Coupler Installation and Operations Manual Getting the most from every watt of HF-SSB Power
Globally, HF-SSB has literally changed the world. For a minimal investment, it has allowed millions of people - often in amazingly remote settings, often in emergency conditions - to reliably bounce clear voice and data signals across a state, across a continent, over an ocean, or around the world. Without satellites, relay stations, cellular nets, stadium sized antennas or huge user fees. Just some fine equipment, a smart operator and nature's own ionosphere make this possible.
SMARTUNER MANUAL SG-230 SMARTUNER ANTENNA COUPLER Installation and Operations Manual Revised: November 2000 Caution: Carefully read the “Quick Start” on the following page and all pertinent sections of this manual prior to operating your Smartuner for the first time. This unit will provide outstanding service if you follow the detailed recommendations within this manual. © Nov2000 SGC, Inc. SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA P.O.
SMARTUNER MANUAL ii Quick Start Guide To quickly install your antenna coupler you will need the following: 1. An HF radio with 10 to 150 watts output. 2. An HF antenna with a single wire feed (not coax fed). Minimum length of 8 feet (to 3.5 MHz) or 23 feet (1.8 MHz). 3. A good ground or counterpoise for the antenna and coupler 4. +12 VDC and ground for the coupler. 5. An LED or other indicating device.
SMARTUNER MANUAL Table of Contents Quick Start Guide ....................................................................................................... ii 1.0 General Information ............................................................................................. 1 1.1 Experience Levels of Users ....................................................................... 1 1.2 What Is an Antenna Coupler? .................................................................. 1 1.3 Overall Description .
SMARTUNER MANUAL 4.5.2 Vehicle installation...................................................................... 13 4.5.3 Motor Vessel installation............................................................ 14 4.5.4 Base installation ........................................................................... 14 4.5.5 Base installation with ground wire radials.............................. 15 4.5.6 Base dipole.................................................................................... 16 4.5.
SMARTUNER MANUAL 6.0 Installation Procedures......................................................................................... 33 6.1 Installation with SG-2000 .......................................................................... 33 6.2 Installation on all Radios........................................................................... 33 6.3 Smartlock Installation ................................................................................ 34 6.4 Weatherdeck Mounting.......................
SMARTUNER MANUAL 12.0 Further Reading…………………………………………………………………51 SUBJECT INDEX......................................................................................................... 52 Nov2000 SGC, Inc. 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 E-Mail: sgc@sgcworld.com Web Site: www.sgcworld.
SMARTUNER MANUAL 1 1.0 General Information The Smartuner™ reputation has grown to legend status because it is simple to use and a highly reliable piece of electronic equipment. A SMARTUNER will provide maximum transfer of radio energy from any HF transmitter to any end-fed HF antenna within the frequency and power limits of its specifications.
SMARTUNER MANUAL 2 proper match of the antenna to the feed line. The Smartuner is a true antenna coupler. The several key points, which we will emphasize throughout this manual, will result in the best possible operation of your Smartuner. These include: • The coupler must be located at the antenna. • No coax may be connected to the coupler output. • The coupler must have clean +12 VDC power supplied to it. • The ground system must always be larger than the antenna.
SMARTUNER MANUAL 3 1.3 Overall Description The SMARTUNER is a general-purpose coupler that can operate with any type of radio and almost any type of antenna configuration. The coupler network con-figuration is of a pi or L type; sensors continually monitor the state of the tuning and relay this information to the processor. The initial (first time) tuning may take several milliseconds to a few seconds de-pending on the complexity of the tuning process for a specific antenna configuration.
SMARTUNER MANUAL 4 The coupler will cease to operate normally if input voltage drops below 10.5v DC. This situation may occur if a marginal battery is used or if you are transmitting at high power with an inadequate power supply or battery. Batteries must be fully charged for proper operation. Large gauge wiring to the transmitter and coupler must be used to avoid retuning.
SMARTUNER MANUAL 5 1.6 Mechanical Design The SMARTUNER is supplied in a weatherproof case with two mounting brackets. RF and DC power are supplied to the unit through the same cable. This special cable consists of a 50-ohm coaxial cable and four conductors. The four conductor wires are for the ground, the positive power lead, the optional SmartLock control, and optional LED indicator.
SMARTUNER MANUAL 6 1.6.1 Marine Mounting The SMARTUNER should be located inside the house or under the aft lazaret on a sailboat. On powerboats, the coupler may be mounted outside, but an addition protective housing is recommended. The preferred installation if vertical is with the standoff insulator pointing upward. A stuffing gland for the RF and DC cables is provided on the lower edge of the weather housing, along with a 1/4-20 stainless steel ground stud.
SMARTUNER MANUAL 7 Long wire antenna Smartuner mounted inside a plastic waste basket to protect it from extreme heat and heavy icing. This type of enclosure is widely available in all countries. 1.6.4 Warranty Note It is important to have protection from the elements as common weather conditions can reach beyond the capabilities of the coupler.
SMARTUNER MANUAL 8 (foam dielectric) or Belden type 9943 coax. Both of these will reduce attenuation to less than 1 dB per hundred feet. You should be aware that this heavier cable is less easy to work and may be quite expensive. • The second loss which must be considered is the losses in the DC power and reset control line.
SMARTUNER MANUAL 9 recommend 70 watts at 1700 kHz and 50 watts at 1600 kHz on a continuous basis. Power Input Range: 3 to 200 watts (PEP) Input Impedance Range: 45 to 55 ohms VSWR: (Typical) Typically less than 1.4:1 DC Input Requirement: +13.8 VDC DC Operating Range +10.5 to 15 VDC Input Current: Average: .9 amps Random set time: Typical: less than 2 seconds Recurrent set time: Typical: less than 10 milliseconds Non volatile memory address: 170 Antenna Length: Minimum length of 8 ft.
SMARTUNER MANUAL 10 marine and land mobile service. SGC Part Number 55-27. QMS - Quick Mounting System that houses SMARTUNER Smartuner and also provides a sturdy mounting platform for the SG-303 antenna system. Designed for fly away installations requiring no holes installation of high performance HF antenna system. SGC Part Number 55-45. 3.0 Parts and Technical Support SGC supplies SMARTUNER equipment; the user supplies suitable radio and antenna. 3.1 Parts Furnished 1. Antenna Coupler 2.
SMARTUNER MANUAL 11 Coupler Information. Please have the serial number of your coupler, the name of the dealer from whom the unit was purchased, and the approximate date of purchase. Antenna Information. Please be ready to describe your antenna installation. You will need to advise us whether the antenna is a wire type, a dipole, V, vertical, long wire, or whip antenna. Ground System. You should be ready to describe your ground system in detail.
SMARTUNER MANUAL 12 longer. In addition, the SMARTUNER is just as happy feeding a conventional V antenna as an inverted V. The coupler is flexible in this regard. 4.1 Antenna Selection The automatic antenna coupler will operate into almost any end-fed antenna with a length of 2.5 meters or more, provided an effective ground is used. The antenna efficiency will generally be proportional to length and in most applications will be maximum at a length of 1/4 wavelength.
SMARTUNER MANUAL 13 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.) 4.4 Backstay Antennas —8 Meters (28 feet) and Longer Although we would love to sell everyone a high performance marine whip antenna, the backstay of a sailboat is almost impossible to improve upon in most installations. 4.5 Typical Installations Figures 4.5.1 through 4.5.
SMARTUNER MANUAL Ground coupler securely to truck 3.0 M whip Feed through insulator Coupler Transceiver Vehicle Installation Figure 4.5.3 Motor Vessel installation Feed through insulator Coupler Suitable stay cable Ground to steel bulkhead or overhead Motor Vessel Installation SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA . © Nov2000 SGC, Inc P.O. Box 3526, 98009 Fax: 425-746-6384 Tel: 425 746-6310 E-Mail: sgc@sgcworld.com Web Site: www.sgcworld.
SMARTUNER MANUAL Figure 4.5.4 Base installation COUPLER Figure 4.5.5 Base ladder installation SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA . © Nov2000 SGC, Inc P.O. Box 3526, 98009 Fax: 425-746-6384 Tel: 425 746-6310 E-Mail: sgc@sgcworld.com Web Site: www.sgcworld.
SMARTUNER MANUAL up to 300 feet up to 40 feet Balanced Line Feeders 300-600 Ohms GND Hot Coupler RF cable DC Control cable Base Ladder Installation Figure 4.5.6 Base installation with ground wire radials Insulator 11M 2M 30° Insulator GTO cable 30° Coupler 2M Ground cable No. 4 AWG (150 cm maximum) Conduit for control cable and coax Radial wires buried in soil Base Installation with Ground Wire Radials Figure 4.5.7 Base dipole installation SGC Inc. SGC Building, 13737 S.E. 26th St.
SMARTUNER MANUAL 17 1 meter 3 meters E66 insulators (x8) Hot GND Coupler 7 to 25 meters 3 meters DC Supply Line RF Cable Base Dipole Installation Figure 4.5.8 Base Quadra Loop Horizontal Radiation Porcelain isolators with tie rope Coupler Ground bolt terminal 50 ohm coax from transmitter Antenna terminal Base Quadra Loop Horizontal The horizontal quad loop is a groundless antenna for high angle radiation and is ideal for HF communications up to 500 miles in the frequency range of 2 to 10 MHz.
SMARTUNER MANUAL 18 Radiation Coupler Base Delta Loop The delta loop antennas are ideally suited to long range communications due to their low angle. This configuration is best for communications ranging from 500 to 5000 miles in the HF frequency range of 4 to 22 MHz. Noise rejection is excellent, as stated for the quad loop antenna. Because the antenna system is not connected to a ground, noise rejection is enhanced.
SMARTUNER MANUAL 19 Figure 4.5.10 Vessel Groundless Loop Radiation 75 feet Vessel Groundless Loop Coupler Porcelain isolator Lower mast connection to coupler RF ground The triangular loop antenna for sailboats is designed to operate in a groundless environment and still provide high performance. This type of installation will require only one insulator point on the bottom back stay and an electrical connection on top of the mast and the stay.
SMARTUNER MANUAL 20 Figure 4.5.11 Vessel insulated back stay Porcelain isolator Radiation 75 feet Vessel insulated Backstay Coupler Porcelain isolator Ground connection The insulated back stay antenna requires two porcelains isolators. The coupler must be placed as close as possible to the base of the back stay antenna. Proper grounding of the coupler is very important. Connect the RF ground terminal of the coupler to all of the metal parts or structures of the boat (keel, engine, etc.). 4.
SMARTUNER MANUAL 21 all frequencies well below a ratio of 1.4:1 VSWR. Directivity will be high from 3 to 12 dB depending upon the frequency. If this is a problem, two loops at 90 degrees can be installed to communicate at 90 degrees off direction of the first loop antenna. Loop antennas are low noise antennas. However, because they are used in apartments and crowded cities, high industrial noise can be expected.
SMARTUNER MANUAL 22 directive. The antenna can be mounted simply on short (18” long by .5” diameter) plastic plumbing pipes. Make the end-fed antenna as long as possible in an “L” shaped configuration, as illustrated in Figure 4.7.1. Figure 4.7.
SMARTUNER MANUAL 23 Figure 4.8.1 Aircraft installation detail Rotary Aircraft Coupler Isolator Wire antenna Strut to space out antenna with plastic tubing or fiberglass rod Figure 4.8.2 Aircraft Installation Detail Fixed Wing Aircraft Wire goes to the coupler Isolator Wire antenna Ground Aviation control head Coupler Wire antenna Radio Isolator 4.
SMARTUNER MANUAL 24 In a typical residential building, covert antennas have been used successfully for intercontinental communications. The antennas used include both groundless loop type antennas and those that require a counterpoise (ground). A. If a flagpole is made of PVC pipe, it is easy to tape a large gauge wire to the inside of the pipe and use a good counterpoise. Typical flagpoles are 25 to 35 feet in height and offer excellent performance on all bands. B. Masonry chimneys are visually “busy.
SMARTUNER MANUAL E. Under the roof overhang, all kinds of wire antennas may be installed. F. All types of antennas may be hidden inside the roof of a building that uses non-metallic roofing materials. G. The downspout, rain gutter antenna works well if the piping and gutter are aluminum. You may wish to assure low electrical resistance connections between gutter sections with hose clamps or plumber’s tape. Coupler E 25 Coupler F G Coupler 4.
SMARTUNER MANUAL 26 Remember that when a mast comes down, you have easy access to the high voltage feed line which may be secured to a kite antenna. Offshore power boats can use this antenna as well, since 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 everywhere from camel back in the desert to Antarctic expeditions.
SMARTUNER MANUAL 27 Metal lawn sprinkler piping (e.g., in a church yard) Fire department standpipes (required in most big city building codes) Underground metal petroleum storage tanks (e.g., at a gasoline station) Metal fencing of any type (e.g., a barbed wire fence along a pasture or under telephone pole) One hundred feet of wire thrown into a river or sea (e.g., under a trestle) Metal drain culverts (e.g.
SMARTUNER MANUAL 28 5.0 General Notes on Antennas and Couplers 1. The longer the antenna, the generally better the antenna performance. By doubling the length of the antenna, an improvement of 3 to 6 dB can be expected in your radiation or receiving characteristics. This is the equivalent of transmitting with 400 watts, when actually you are using only 100 watts. 2. A ground for end-fed antennas can be effectively created by running radial wires from the coupler point and burying them in the ground.
SMARTUNER MANUAL 29 the coupler will load and tune the antenna whip. A high voltage of 15,000 to 30,000 volts RF will be applied to the antenna depending on the RF power level and frequency. The inexpensive ball mounts for CB antennas are not designed for so stringent a purpose. We recommend the use of an antenna system such as the SG-303: it was specifically designed for such extreme applications. 5.
SMARTUNER MANUAL 30 e) Horizontal wire antennas have maximum radiation broadside to the antenna when the frequency is less than 1/4 wavelength. As the frequency increases beyond 1/4 wavelength, lobes will appear in the radiation pattern with the principal lobes becoming closer to the plane of the antenna as the length increases. At all times, radiation will be minimal at the end of the antenna; therefore, it should be located so that the ends point in directions where communications are not required.
SMARTUNER MANUAL 31 sure that the grounding point is not insulated from other parts of the vehicle by nonmetallic couplings, bushings, fiberglass panels, etc. Modern vehicle assembly techniques that use spot welding may not always adequately connect various body parts. Use an ohmmeter and insure your vehicle is electrically bonded. Another area to watch is trunk lids and hoods. Because many body parts are dip painted, they may float above the RF ground when assembled.
SMARTUNER MANUAL 32 If you are using a backstay antenna, try to visualize your ground as you look down from the top of the mast. Ask yourself if you see 100 square feet of metal below you. The closer to this figure you can get, the better your radiated signal will be. What you are trying to do is make a large capacitor to the seawater. Consider the salt water of the sea to be one plate of a capacitor, the ground system the other, and the hull to be the dielectric.
SMARTUNER MANUAL 33 may be approximated by placing a screen of chicken mesh, copper hardware cloth, or similar material over the roof of the building. More frequently, a counterpoise system of radial wires must be used. SGC recommends 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. 5.4 Corrosion Ground connections are subject to corrosion and oxidation.
SMARTUNER MANUAL 34 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. You will see the connectors when you remove the Philips head screws that hold the protective sheet metal cover over the rear panel connectors.
SMARTUNER MANUAL 35 6.3 Smartlock Installation The SmartLock is an optional accessory with the SMARTUNER. 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 retuning will occur, and 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.
SMARTUNER MANUAL 36 Weatherdeck mounting can be used. Years of experience have shown that inside mounting or even splash-proof mounting is preferred, particularly in cold, damp environments. In tropical use, shielding from direct sunlight is desirable. The base of the antenna should be connected to the high voltage feed-through insulator on the housing. Note that this insulator is not designed to support heavy mechanical loads. If such loading is encountered, use a strain insulator.
SMARTUNER MANUAL 37 Next, the SSB transmitter should be adjusted to the lowest desired frequency, and the test as outlined above should be repeated. The SMARTUNER should immediately sense the mismatch and switch to the tune mode to retune the antenna system. Since the algorithm must search through more possible values of L and C to find an appropriate combination at the lower frequencies, the tune cycle may take longer. A few spoken words should achieve an “all tuned” indication.
SMARTUNER MANUAL 38 the oil-can type because you can guess how much power is being output, you can see the voice modulate the SSB (the light will flicker with your voice peaks), and you can tune the transmitter for maximum output (if the transmitter is an older model that requires tuning). Before building or using the light-bulb dummy load, remember that these models typically don't dissipate the transmitter's output as well as an oil-can dummy load.
SMARTUNER MANUAL 39 Antenna Jack RF GND RF IN-OUT Antenna Coupler GND Radio HF/VHF RADIO TEST PROCEDURE 1. Connect the transceiver light bulb load to the radio RF in/out jack. 2. Turn on the radio and set the CW mode. 3. Key the PTT switch on the microphone and look at the light bulb. If the light bulb load is connected and the radio is transmitting, the light should turn on. 4. Set the power to LO. 5. Set the radio to SSB mode. 6. Key the PTT switch on the microphone and talk into the microphone.
SMARTUNER MANUAL RF Input ST-1 RF GND Input ST-1 13.6 (24) VDC ST-7 DC GND ST-8 RF Output ST-9 RF GND Output ST-3, ST-4 TND ST-6 Reset/Hold ST-5 40 The TND line cannot be connected to the SG-2000 and SmartLock units simultaneously. 7.2 Tuning Process An array of detector devices in the SMARTUNER monitor the antenna system impedance, reactance signal, and the VSWR load when RF power is applied to the unit.
SMARTUNER MANUAL 41 network. Similarly, a low line impedance will result in more output from the current sensor, resulting in a net negative output voltage from the summing network which is shifted to a 0 to 5v range, then fed to processor's A to D converter ports, and used within microcontroller. 7.4 VSWR Detector A directional coupler is made up of a current transformer T3 and a voltage transformer T1, in conjunction with termination resistors R31 and R32.
SMARTUNER MANUAL 42 data is found, it is tested for validity, and the required “end of tune” conditions will be sensed by the RF sensors. Then the data will be latched in place, and the CPU will again wait for RF to cease transmitting and return to the Stop mode. This process takes about 20 milliseconds, which is the same length of time that is required to close the network relays. 7.
SMARTUNER MANUAL 43 Antenna L1 5 0 ohms C in C out The versatile MicroTune™ software offers its user these special functions: 1. The coupler is activated whenever forward power is present. 2. In addition to sampling VSWR to determine if the coupler should retune, frequency comparison is employed. This causes the coupler to tune whenever the transmit frequency changes independent of the VSWR reading. 3. Extensive tuning paths are used to test different antenna situations.
SMARTUNER MANUAL 44 Detecting no forward power. When RF power is detected, the CPU will perform a test to verify forward power is present. If no forward power is detected, the computer will revert to the Stop mode. If forward power is detected, the CPU next checks the Hold signal from the SmartLock. If the user has switched on the Tuned Lock function of the SmartLock, the Hold line will be low and the CPU will not proceed with the tuning algorithm.
SMARTUNER MANUAL 45 so, the frequency is measured and the tuning elements used are saved in memory coupled with a verification code. Once saved, a test is made on JP1 to check if the duplex mode has been selected. If so, the transmit tuning elements remain in circuit until the receive mode is verified. At this time, all tuning elements are removed. The frequency is then saved for future comparison and the CPU reverts back to the STOP mode. 8.
SMARTUNER MANUAL 5. 46 At this point the tune indicators are engaged. The current relay data is saved if JP2 is set to tune from memory; if JP1 is set to the tune elements out during receive position, the program waits until forward power is no longer present, then removes all tuning elements. The frequency is saved for future frequency comparison, and the computer reverts to the Stop mode. 8.2.
SMARTUNER MANUAL NO 47 In this position the coupler will retain the required tuning data and will change nothing whether in receive or transmit. If typical operation is out of band duplex, Yes would be most likely to give better performance. If in band operation is typical and duplex or simplex is the predominant mode of operation, then No is usually the better choice. 8.2.
SMARTUNER MANUAL Reset 48 Pushing the red reset button allows the coupler to be reset. This is preferable to the other method of turning the input power off and on. 9.2 Smartlock Notes The Tune Lock function is in most cases unneeded. Inadvertent retuning is a rare occurrence. Retuning may occur when the environment or antenna system has changed. In this case, retuning is within normal operation of the coupler. However, the function is still provided with the SMARTUNER to be used if desired. 10.
SMARTUNER MANUAL 49 Figure 10.1.2 Antenna Receiver Thus, the SMARTUNER can be used in receiver-only systems to enhance its reception capabilities. 11.0 Troubleshooting the SMARTUNER Only a small number of installation mistakes can be made. These will fall into one of several categories: ground fault, cable fault, and antenna fault. There is also a slight chance of an electrical fault in the coupler.
SMARTUNER MANUAL 50 • You may simply change the ground system so that it becomes larger than the antenna at the problem frequency. Differing resistance. The third kind of ground fault that we encounter occurs when a ground system and an antenna have very different electrical resistance. This happens when you install a very conductive copper antenna wire in an aircraft.
SMARTUNER MANUAL 51 Wire running parallel to a grounded surface may represent a significant capacitance to ground and, just as with coax, this will cause problems. To give you an idea how these two points can cause problems, let us relate an incident that happened in late 1992. A SMARTUNER user had a coupler installed in a mobile ham radio installation. The coupler could not find a lock on several bands. After going through his installation carefully, the user called SGC for technical support.
SMARTUNER MANUAL 52 As part of your check-out of an HF system, you should operate on all channels and frequencies which you plan to use on a regular basis to insure the coupler and antenna which you have provided work well. Antenna insulators. Sporadic operation may be caused by poor antenna insulators. We have seen on sailboats, for example, people trying to save money by expecting the fiberglass hull to act as an insulator and not using a lower insulator.
SMARTUNER MANUAL 53 Remember that the SMARTUNER is an excellent piece of equipment that will give outstanding performance. If you have a problem with the coupler finding a tuning solution, you should change one variable at a time. 12.0 Further Reading Further information regarding applications, installation and operation can be downloaded from www.sgcworld.com. These publications include: • HF User's Guide • Go Mobile at 500 Watts • Stealth Antennas • Smartuner Antenna Coupler Manuals SGC Inc.
SMARTUNER MANUAL SUBJECT INDEX Accessories, 9 Aircraft installation, 22 Antenna connection, 32 Antenna coupler—what is it? 1 Antenna coupler mounting, 32 Antenna faults, 49 Antenna installation, 28 Antenna location, 28 Antenna selection, 11 Antenna too long, 45 Antenna too short, 44 Antenna types, 11 Apartment loop antenna, 19 Backstay antennas, 12 Base quadra loop, 16 Base dipole, 16 Base installation, 14 Base station grounds, 31 Caution: high voltages, 4 Cold temperature installations, 6 Corrosion, 32 Co
SG-230 Manual Notes 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 © 2000 SGC Inc E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.
SG-230 Manual Notes © 2000 SGC Inc 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: sgc@sgcworld.com Web site: http://www.sgcworld.
Qu i c k Mo u n t S y s te m QMS-7 for mobile HF and VHF use Antenna Coupler System • QMS-7 offers unsurpassed frequency agility without user intervention • SG-231 Smartuner automatic antenna coupler, SG-307 extended full-range antenna, and weather resistant QMS-7 package • 1 to 60 MHz —continuous— instant tuning while you drive • Rated for use on moving vehicles at up to 75 miles (120km) per hour I t makes no diff e rence where you go or what vehicle you drive, the QMS-7 will provide exceptional auto
The QMS-7 Antenna Coupler System Specifications: QMS-7— Mounting coupler and antenna outside the vehicle reduces engine noise, interference and eliminates feed loss. It can be quickly installed and easily moved from vehicle to vehicle. No drilling or vehicle modifications are required. Industrial suction cups secure the QMS-7 to the vehicle, without damaging the finish, and high strength straps and buckles complete the job and give structural integrity.
Q M S Antenna Coupler System The Quick Mount System for any mobile HF rig No Compromise Communications • QMS offers unsurpassed frequency agility needing no user intervention • QMS includes SGC Smartuner automatic antenna coupler, extended full-range antenna, and weather resistant QMS package QMS Descriptions: QMS-b2 cat. #55-47 includes the SG-230 (200W) 1.8 to 30 MHz SG-303 9 ft. antenna QMS-b3 cat. #55-48 includes the SG-235 (500W) 3.0 to 30 MHz SG-303 9 ft. antenn a QMS-a7 cat.
The QMS Antenna System S Specifications: (QMS-7 specifications included on separate brochure.) trap the QMS on your favorite family or business vehicle. You’ll find it gives any HF-SSB superior frequency agility and exceptional performance. The SGC Smartuner automatic antenna coupler, the SG-303 extended full-range antenna, and the special exterior QMS mounting package comprise the QMS. Mounting coupler and antenna outside the vehicle reduces engine noise and interference.
M SG-303 Antenna with SGC Couplers SG-303 • Heavy duty rubber encapsulated spring mount • Heavy duty whip antenna • Adjustable 4-way ratchets Smartuners The SG-303, a high performance mobile antenna, is designed and built to operate in rough terrain and extreme climactic conditions. It has a lifetime warranty. The SG-303 antenna is a light-weight and low-cost mobile antenna for operation between 1.8 and 30 MHz.
SG-303 Specifications HF Frequency Ranges: 1.8 to 30MHz Maximum Output Power: 3 to 500 watts (PEP) voice or CW Dual Frequency Resonance: at 12 and 22 MHz Antenna structure: Two sections, 50 inches each Mount: Base: high voltage insulated 4-way stainless steel ratchet mount heavy duty rubber encapsulated spring mount Feed-through: Cable: high voltage wall feed-through bushing (hole = .890 in.) 3 ft.
FOR MOBILE HF AND VHF USE (Cat.#55-28) (coupler required*) The SG-307 is designed and built to operate in rough terrain and extreme climactic conditions. The SG-307 antenna is a light-weight and low-cost mobile antenna for operation between 1.8 to 60 MHz. At only seven feet in length overall, the SG-307 is mounted on a sturdy professional weatherproof rubber encapsulated stainless steel spring. Mounts on an adjustable ratchet mechanism: • the base adjusts for the best attachment to the vehicle.
SG-307 Specifications SG-231 Smartuner Use the SG-231 to automatically tune just about any antenna (7 feet minimum) to HF/VHF transceivers from 1 to 60 MHz. It automatically evaluates and switches over 4 million possible combinations of input capacitance, o u t p u t capacitance, and series inductance to ensure a perfect match between the transceiver and the antenna.
® Intelligent Tuning Smartuner® is designed for maximum flexibility. RF π “pi” network with over a half million microprocessor combinations. SmartLock® Option. Provides two external controls for the SG-230 Smartuner®: Locking function prevents retuning despite changing antenna loads (e.g.
SG-230 Manual SGC Equipment Standard Warranty SGC wishes you to be satisfied with your new equipment purchase. Most SGC products are therefore warranted to be without defect in workmanship or materials for a period of one year from the date of purchase. Proof of a date of purchase is required when requesting warranty service.
million precision matches. Smartuner ® then remembers the chosen frequency and tuning values and automatically reselects those Automatic Antenna Coupler for all values - in less than 10 ms, each time HF-SSB Bands and Modes you select that frequency. Flexibility is a key Smartuner ® feature. It is available with a number of attractive options, including a shock mount for military and extreme applications, plus a 24 VDC option.
