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Summary of Contents for MFJ MFJ-9417
- Page 1 Model MFJ-9417 INSTRUCTION MANUAL CAUTION: Read All Instructions Before Operating Equipment MFJ ENTERPRISES, INC. 300 Industrial Park Road Starkville, MS 39759 USA Tel: 662-323-5869 Fax: 662-323-6551 COPYRIGHT 2012 MFJ ENTERPRISES, INC. VERSION 1A...
- Page 2 At home or on the go, you will enjoy countless hours operating the MFJ-94217. Best of all, it is fully backed by MFJ's exclusive "No Matter What" 1 year guarantee. If it breaks, we will take...
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Page 3: Quick Start Instructions
1. POWER SUPPLY: The MFJ-4114 AC/NiCd Portable Power Pack or MFJ-4110 AC wall- adapter supply are Especially designed to run the MFJ-9417. However, you may use any 13.8 Volt supply or 10-cell NiCd pack as long as it delivers 2 A on peaks (12-Volt supplies will work but at reduced RF output). -
Page 4: Typical Specifications
MFJ-9417 Installation Manual 17-Meter SSB Travel Radio TYPICAL SPECIFICATIONS RECEIVER SECTION: Frequency Coverage: 18.068 to 18.168 MHz Receiver Type: Single conversion superhet VFO Frequency: 5.8 MHz Range IF Frequency: 12.288 MHz IF Selectivity: -6 dB at 2.5 KHz AGC: Audio-derived Sensitivity: <... -
Page 5: Theory Of Operation
The MFJ-9417 is especially designed to operate from lightweight constant current power sources such as NiCd cells or the MFJ wall-adapter AC supply. SWITCHING AND REGULATION: Q7 activates relay K1, which routes the antenna line and activates the +T and +R buses (+T and +R buses power some stages, key switch nodes, and bias Q11 on during TX). -
Page 6: Rear Panel
MFJ-9417 Installation Manual 17-Meter SSB Travel Radio MFJ-9417 CONTROL LOCATION AND FUNCTION MFJ ENTERPRISES, INC. ANTENNA STARKVILLE, MS USA INPUT POWER 12-15VDC GAIN 1.2 AMP REAR PANEL 1. POWER JACK: 5.5mm OD, 2.1mm ID, (+) to center pin. 2. ANTENNA JACK: SO 239 for standard coax plugs. - Page 7 12 15 volts at 2 Amps (13.8V required for full RF output). The DC power connector at the rear of your MFJ-9417 is a 5.5mm OD, 2.1mm ID coaxial type jack. Extra plugs are available from RadioShack stores (#274-1567). Always connect plus (+) to the CENTER PIN.
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Page 8: Special Operating Notes
STEP 6. To transmit, press the mic's PTT switch and speak at normal conversational level with the mic held about 2 inches from your mouth. The MFJ-9417 has a very potent speech processor and will pick up your voice at full intensity. Avoid the natural temptation to... - Page 9 300-Ohm twin-lead feedline drop that also functions as the antenna’s 50-Ohm matching section. Connect a random length of coax from the MFJ-1771 feedline drop to your rig and let the matching network do the rest. The antenna is pre-tuned, easy to handle, and broad-banded for full coverage with low SWR.
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Page 10: Troubleshooting
High power and big antennas have never been a requirement for worldwide radio communication and still are not. Despite the vast distances involved, hams consistently reach every corner of the planet running far less power than your MFJ-9417. How do they do it? Here are some proven tips guaranteed to work: GROOM YOUR ANTENNA Inspect and clean all traps and contacting surfaces. - Page 11 If these checks don't uncover the problem, or if you do not feel qualified to make the prescribed adjustments, please call us for help at 800-647-TECH (800-647-8324). FIELD ALIGNMENT PROCEDURES FOR THE MFJ-9417 TRANSCEIVER SPECIAL TOOLS, PARTS, TEST EQUIPMENT: AC Power Supply, 13.8 Volts @ 2 Amps...
- Page 12 *If reverse polarity track fuse opens, install a miniature 2.5 A pigtail fuse or a 3/4" hair pin loop of #32 wire. DC VOLTAGE CHART TROUBLESHOOTING GUIDE For advanced troubleshooters, the following are typical DC voltages found in the MFJ-9417. Voltages were checked with handheld probe type DVM to minimize effects of lead inductance and to limit the potential for RF feedback.
- Page 13 MFJ-9417 Installation Manual 17-Meter SSB Travel Radio -----------------RX----------------- ------TX----- 10.0 10.0 10.0 BIPOLAR AND JFET DEVICES: D/E = Drain/Emitter S/B = Source/Base G/C = Gate/Collector * = Test in TRANSMIT mode ** = Test with TUNE switch depressed *** = DO NOT TEST gate of Q9 may cause generation of parasitic oscillations.
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Page 14: Full 12-Month Warranty
MFJ Enterprises, Inc. warrants to the original owner of this product, if manufactured by MFJ Enterprises, Inc. and purchased from an authorized dealer or directly from MFJ Enterprises, Inc. to be free from defects in material and workmanship for a period of 12 months from date of purchase provided the following terms of this warranty are satisfied. - Page 15 MFJ-9417 Installation Manual 17-Meter SSB Travel Radio SCHEMATIC...
- Page 16 MFJ-9417 Manual 300 Industrial Park Road Version 1A Starkville, MS 39759 Printed In U.S.A.
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