SGC Smartuner SG-239, Manual

Page 1: ...SG 239 Smartuner Manual October 2001 Cat 54 22 TM...

Page 2: ...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 Many co...

Page 3: ...13 4 2 1 Antenna Too Short 13 4 2 2 Antenna Too Long 14 4 2 3 JP1 Tuning Elements Out During Receive 14 4 2 4 JP3 Tune From Memory 15 5 0 B I T E Status LED Descriptions 15 6 0 Optional SmartLock 16 6...

Page 4: ...VDC and ground for the coupler 5 SmartLock coupler controller optional Power supply can be same as the radio or supplied by ra dio DC switch supply line Operation 1 Turn on Radio Apply 12 VDC power to...

Page 5: ...milliseconds Antenna Length Minimum length of 9 ft 7 to 30 MHz Minimum length of 40 ft 3 to 30 MHz Minimum length of 100 ft 1 8 30 MHz Installation Any position Operating Temperature 35 to 70 C Size 7...

Page 6: ...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 shoul...

Page 7: ...coupler networks L PI Note that the L net work as viewed from the generator may be configured as either C in or C out whichever is required by the load In either case the end of the network containing...

Page 8: ...nary increments Relays are provided in conjunction with each lumped constant and allow removal or entry as desired A network having 64 values on input shunt C 16 values of output shunt C and up to 128...

Page 9: ...f the proc essor 3 5 Phase Detector A phase detector is formed by T3 A1 and their associated compo nents This detector indicates the state of any reactance associated with the antenna coupler as noted...

Page 10: ...t is required to close the network relays 3 7 Initialization The microcomputer is usually in the Stop mode and requires an in terrupt signal XIRQ to start program implementation The XIRQ is obtained f...

Page 11: ...ations The initial tuning of a new frequency or switched antenna may re quire up to two seconds Any further tuning is accomplished in a mat ter of milliseconds if jumper JP3 Tune From Memory is in its...

Page 12: ...ased on the fre quency measured The recalled data is then tested for validity If the data proves invalid it is bypassed and re tuning is performed If the data recalled proves valid the data is sent to...

Page 13: ...it 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 4 1 2 Manual Mode Manual...

Page 14: ...ied RF power the tuning sequence pro ceeds as follows 1 Output capacitance is added until the phase switches to capacitive 2 At this point series inductance is added until the antenna is no longer cap...

Page 15: ...frequency is selected the coupler will pro ceed through a complete tuning sequence Clearly the advantage of Yes is speed The coupler will seem to be matched instantly when in this position if the fre...

Page 16: ...at these status LEDs are usually used to aid a technician in diagnosing the status of the antenna system and should not be thought of as laboratory instruments As the Smartuner tunes the BITE status w...

Page 17: ...your last setting in a broad band mode and therefore in creasing your incoming receive level by several S units Reset is also accomplished by turning power off and on again 6 1 Tune Tune Lock Reset Tu...

Page 18: ...D s start flashing memory will have been erased and S3 and S8 can be released End of procedure 2 Clear single unit memory bin A Set auto manual slide switch position to auto B Transmit on frequency to...

Page 19: ...for saving and recalling re ceive only memories below in paragraphs 5 6 End of procedure 5 Saving a receive only setting into memory A Set auto manual slide switch position to manual B Momentarily dep...

Page 20: ...utting into a load A load is anything that the output power can be pumped into If the transmitter is operated without any sort of load connected the final amplifier stage could become severely damaged...

Page 21: ...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 The result is that RF will leak...

Page 22: ...adio and the Smartuner coupler 4 Set the radio to the CW mode 5 Key the PTT switch on the microphone and look at the light bulb The light should turn on if the coupler has completed its tuning cycle a...

Page 23: ...r necessary Any excess cable should be short ened to the proper length never coiled Following these rules will minimize marginal installations and problem sources such as RF feedback in the radio powe...

Page 24: ...e limited warranty stated above and to the full extent permitted by law SGC disclaims any other express or implied warranties and liability for any incidental conse quential special or exemplary damag...

Page 25: ...ing 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 25 11 0 Component Locat...

Page 26: ...GND 7 U3A 74HC393 7 C16 1u R21 5 6k D 2 CLK 3 Q 5 Q 6 P R 4 C L 1 U2A 74F74 1 2 U11A 74HCT14A 14 D8 R3 1 5k C10 1 C14 01 R20 1 5k D9 ST3 GND ST2 RF R1 100 D1 C9 1 C13 01u R33 100 1W R34 100 1W VCC C2...

Page 27: ...T B Y 2 E X T A L 7 XTAL 8 RESET 17 XIRQ 18 IRQ 19 P D 5 S S 2 5 P D 4 S C K 2 4 P D 3 M O S I 2 3 P D 2 M I S O 2 2 P D 1 T X D 2 1 PD0 RXD 20 V R E F H 5 2 V R E F L 5 1 P E 7 5 0 P E 3 4 9 P E 6 4...

Page 28: ...U 6 1 8 U 6 1 7 U 6 1 6 U 6 1 5 U 6 1 4 U 6 1 3 U 6 1 2 U 6 1 1 U6 11 18 C44 01 C45 01 C37 01 U7 11 18 U7 12 18 12V C39 01 C40 01 C41 01 C42 01 VEE 1 CLK 2 Q1 18 Q2 17 Q3 16 Q4 15 Q5 14 Q6 13 Q7 12 Q...

Page 29: ...1u C69 1u C70 1u L6 4 0 L8 8 0 R78 10 R79 10 K1 18 17 16 C66 1u C67 1u K13 K14 L3 5 L4 1 0 L5 2 0 R75 10 R76 10 R77 10 C65 1u C72 1u K11 K12 L1 0 125u L2 2 5 R73 10 R74 10 C54 1000p C56 620p C57 470p...

Page 30: ...1u 5VG1 3 4 U11B 74HCT14A VCC C99 1u C100 1u GND2 VI 1 G N D 2 VO 3 U4 LM7805 12V C107 1u C108 1000u F1 2A GND1 TND D14 ST 12V ST TND ST HLD RESET HOLD C101 1u C106 01u 11 10 U11E 74HCT14A ST GND RFP...

Page 31: ...mber REV A Q30102900A A Title SG 239 COUPLER 425 746 6310 BELLEVUE WA 98005 13737 SE 26TH STREET SGC INC R42 10K D20 R47 10K D21 R39 10K D15 R94 10K R95 10K R44 10K R43 10K D16 D17 D18 D19 MAN VCC CO...

Page 32: ...voltage is present on antenna terminal Avoid contact or RF burns may occur 4 For end fed antennas use a ground system of several radials which are electrically longer than the radiating portion of the...

Page 33: ...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 33 Notes...

Page 34: ...237 PCB SG 237 SG 237 Porta SG 230 SG 231 SG 235 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 x x x x Commercial x x x x x...

Page 35: ...max 3150pf 6400pf 6400pf 6400pf 6400pf Inductance minimum 0 125 H 0 125 H 0 25 H 0 125 H 0 125 H Inductance maximum 15 875 H 32 H 64 H 64 H 32 H Output Capacitance min 50pf 12 5pf 25pf 12 5pf 12 5pf...

Page 36: ...ary Aircraft Strut to space out antenna with plastic tubing or fiberglass rod Coupler Isolator Recreational Vehicle Antenna Installation 18 PVC pipe standoffs Metal roof of vehicle Antennawire C o u p...