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16.0 QUICK TOUR OF USER CONNECTORS

There are a total of six 'user accessible' connectors on the SG-2020.
Three connectors on the front panel provide connections for micro-
phone, iambic paddle and standard key. The remaining three con-
nectors are located on the rear panel and provide connections for
antenna, power and earphones.

16.1 FRONT PANEL CONNECTORS

16.1.1

MICROPHONE

This connector is a standard 8 pin microphone connector that is
common to all SGC transceivers and others such as the Kenwood
MC-43. Wiring connections are shown below.

16.1.2

PAD (PADDLE)

A 3.5 mm stereo jack is provided for the keyer paddle. The 'tip'
connects to the 'dot' paddle and the ring connects to the 'dash' pad-
dle. Wiring connections are shown below.

16.1.3

KEY

A 3.5 mm mono phone jack is provided for the CW key. The key
sees +5 volts at a few milli amperes. The SG-2020 is set up for full
break- in operation and transmits when the key is closed. A
sidetone of 650 Hz is also activated.

33

© 1998 SGC Inc

SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331

E-mail: [email protected] Web site: http://www.sgcworld.com

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Содержание SG-2020 TEST DOCUMENT

Страница 1: ...S G 2020 Transceiver Installation and Operations Manual No Compromise Communications...

Страница 2: ...ost competitive in the entire long distance communication market SGC equipment is presently being used by the United Nations for inter communications in developing countries throughout the world Many...

Страница 3: ...6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com SG 2020 Transceiver Installation and Operations Manual No Compromise Communications SGC RESE...

Страница 4: ...0 REAR PANEL CONNECTORS 27 14 0 CIRCUIT DESCRIPTION 29 15 0 AM BROADCAST RECEPTION 31 16 0 QUICK TOUR OF USER CONNECTORS 33 17 0 ALIGNMENT TEST PROCEDURES 36 18 0 EXCITER VOLTAGE MEASUREMENTS 39 19 0...

Страница 5: ...n USB and LSB Full break in operation in CW Built in mode B Iambic Keyer adjustable from 5 to 60 WPM Very low power consumption on receive less than 400 mA Frequency Scan Memory scan with adjustable d...

Страница 6: ...of new generation SGC products based on the single I F frequency SGC introduced the first HF SSB which was mass produced for the marine industry This product included new features such as wide band te...

Страница 7: ...atts In other words it is capable of producing 40 saturated watts in mid band and therefore a rating of 20 watts PEP is very conservative The SG 2020 is equal to the performance of only a very few tra...

Страница 8: ...0Hz Audio Output 1 watt RMS AF distortion at nominal output power less than 3 Internal Speaker 5 watts maximum 4 ohms Noise Blanker pulse ignition RF Gain front panel controllable BFO processor contro...

Страница 9: ...alog 52 26 3 1 power cable and connector 1 meter 14 gauge 4 1 Front Flip Foot catalog 05 43 5 1 SG 2020 Operator s Manual 6 3 QSL cards A quick start information guide is printed on the inside of the...

Страница 10: ...d the BW button while turning the main tuning control knob to adjust the bandwidth for the desired filter setting Narrowing the bandwidth filter will allow clear reception of CW signals in crowded ban...

Страница 11: ...hen key is released This allows traffic to be heard between CW ele ments PAD input Radio remains in transmit for space duration of CW elements and only reverts to receive after a character is sent Thi...

Страница 12: ...of any station depends on providing a reason ably efficient and well matched antenna system The SG 2020 expects a 50 ohm resistive impedance at the operating frequency The output load conditions are...

Страница 13: ...ut power A power supply with an output current rating of 1 or more amperes will be sufficient if the SG 2020 is used in receive mode only Power supply voltages greater than 18 volts can dam age the SG...

Страница 14: ...ting plate so the 3 holes match the screw holes in the chassis C Re install the 3 pan head screws provided with the plate to secure the radio to the mounting plate D Secure the radio to a flat surface...

Страница 15: ...he voltage at the transceiver end of the cable and con firm that the proper voltage and polarity exist for the SG 2020 The center position of the 3 contact connector is POSITIVE while the left contact...

Страница 16: ...consumption both in receive and transmit allows this equipment to operate when others will not In addition it can be operated by simple D size drycell batteries Its transmit charac teristics with 20W...

Страница 17: ...be record ed and the operator can set his own table for the particular radio Combining the proper use of audio level RF level passband tun ing audio frequency and bandwidth tuning the CW operator wil...

Страница 18: ...US Coast Guard high seas frequencies Appendix A is provided for popular ham net frequencies and marine frequencies 7 5 AVIATION The SG 2020 was also designed for aviation operation It is not FAA type...

Страница 19: ...push button and rotates the main tun ing knob then only the 3 preset channels will be accessible Scanning will automatically cover only these 3 frequencies Note all memories must be frequency program...

Страница 20: ...per step 10 BW Bandwidth SCAF setting function 11 SPLIT Split Frequency Operation 12 VOLUME Audio Frequency Gain Control receiver 13 RIT RIT XIT Receiver Transmitter Incremental Tuning 14 RF Radio Fre...

Страница 21: ...sidetone and then the DC voltage of the power supply Finally the operating frequency will be displayed and the transceiver is then ready for operation 8 1 2 LIGHT Pressing the LIGHT button turns the d...

Страница 22: ...nker is designed to provide modest blanking of impulse ignition type noise without degrading the performance of the receiver Normally the blanker would remain in the off condition 8 1 6 XCVE RIT SPLIT...

Страница 23: ...e tuning to listen for other stations calling the DX station upband by about 5 KHz 4 When you have found the DX station s listening frequency release the REV button and make your call You will be tran...

Страница 24: ...frequency If you press it once more you will return to the last used frequency Each time you press MEM you will alternate between the current memory and the fre quency last used The following frequen...

Страница 25: ...or this control is in its maximum or fully clockwise position 8 1 12 VOLUME The VOLUME knob controls the AF gain of the receiver Maximum receive audio is when this control is in its fully clock wise p...

Страница 26: ...frequency using the main tuning control Pressing CMD and PBT simultaneously begins the frequency scan Blinking LED s will indicate the direction of the scan To reverse the scan direc tion press REV mo...

Страница 27: ...ree mode LED s XCVE RIT SPLIT will be on Adjust by turning the main tun ing knob To store this calibration press MEM Note If the frequency display has been re calibrated the default channel memory fre...

Страница 28: ...LT METER REV toggles the choice between on and off To store this choice into the memory press MEM 10 5 CODE REVISION DISPLAY REV Pressing REV upon power up displays firmware revision 10 6 MEMORY CHANN...

Страница 29: ...display returns to forward power indication when the REV button is released Remember that when operating SSB voice transmission the displayed peak reading on the bargraph will be substantially lower t...

Страница 30: ...mono phone jack is provided on the front panel for a straight key The key sees 5 Volts at a few milli amperes The SG 2020 is set up for full break in operation and transmits when the key is closed A s...

Страница 31: ...he SWR protection will reduce the output power with minor mismatches or shut the transmitter down with more severe mismatches 13 2 13 6 VDC DC power connection rear panel The power connector uses two...

Страница 32: ...SGC Inc SGC Inc SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcwo...

Страница 33: ...d then to the custom high performance double balanced diode ring mixer The mixer converts the incoming signal up to an IF of 60 MHz The synthesizer tunes from 61 8 MHz to 89 7 MHz This corre sponds to...

Страница 34: ...power level and further increases average power Transmitter lin earity is the best in the industry with the special VOGAD system providing signal transmission strength equivalent to much higher 100 wa...

Страница 35: ...rformance To receive signals in this frequency range it is necessary to bypass the SG 2020 s broadcast filter as described below Strong local AM sta tions will still be heard if the filter is not bypa...

Страница 36: ...int of the SG 2020 s high pass ellipti cal filters Two resonances with rejection better than 50 db are available and can be tuned directly on the interfering station to sup press the unwanted signal L...

Страница 37: ...he Kenwood MC 43 Wiring connections are shown below 16 1 2 PAD PADDLE A 3 5 mm stereo jack is provided for the keyer paddle The tip connects to the dot paddle and the ring connects to the dash pad dle...

Страница 38: ...smatched conditions and transmitter performance will be general ly compromised when not operating into a nominal 50 ohm load The antenna connection is made via a standard PL 259 type coaxial connector...

Страница 39: ...nter connection is positive and the left facing the rear of the radio outer connection is the negative Two connections are required via this connector one positive and one negative supply line 16 3 3...

Страница 40: ...ALIGN RECEIVE IF TRANSFORMERS Required Test Equipment a Digital Volt Meter b HP8640 RF signal generator or equivalent Procedure Tune to 14 2 MHz and connect the DVM to the AGC test point TP13 and Gnd...

Страница 41: ...ad to the SG 2020 Connect the DVM to TP1 TP2 on the LPA PCB Ensure the Mode is not CW With no signal connected to the mic input activate the PTT line Use milli volt scale on DVM Adjust R7 on the LPA f...

Страница 42: ...Set generator to 1300 Hz 20 mV AF input to the microphone connector measured output power level should be 1 8 25 MHz 20 watts 3 watts above 25 MHz 14 watts minimum 17 8 STRESS POWER MAXIMUM OUTPUT PO...

Страница 43: ...6 U8P12 10 0 U8P13 0 6 U8P14 0 6 U8P15 0 6 U8P16 0 6 U8P17 10 0 U8P18 10 0 Q12P1 4 1 Q12P2 3 5 Q12P3 4 9 Q11P1 5 0 Q11P2 5 0 PART V DC PART V DC PART V DC 18 0 EXCITER VOLTAGE MEASUREMENTS Note All li...

Страница 44: ...8 9 0 Q23P1 0 2 Q23P2 0 Q23P3 0 2 U9P1 9 0 U9P2 9 0 U9P3 0 U9P4 2 9 U9P5 4 2 U9P6 2 9 U9P7 0 U9P8 9 0 Q22P1 2 4 Q22P2 1 7 Q22P3 9 0 Q19P1 0 7 Q19P2 0 Q19P3 0 Q25P1 0 06 Q25P2 1 6 2 5 Q25P3 0 2 U13P1 1...

Страница 45: ...U25P15 5 0 U25P16 5 0 Q38P1 0 7 Q38P2 0 Q38P3 0 Q37P1 0 7 Q37P2 0 Q37P3 0 U4P1 5 U4P2 0 U4P3 0 U4P6 0 U4P7 0 U4P8 10 0 U17P1 5 U17P2 0 U17P3 0 U17P6 0 U17P7 0 U17P8 10 0 U21P1 5 U21P2 0 U21P3 0 U21P6...

Страница 46: ...Inc SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com 1998...

Страница 47: ...SGC Inc SGC Inc SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcwo...

Страница 48: ...4 5 6 P2 LCD DISPLAY 1 2 3 4 5 6 J2 BACK LITE P3 1 2 3 4 5 6 7 8 J2 EXCITER PCB J1 P4 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 J4 1 2 3 4 5 6 7 8 9 10 P1 1 2 3 4 5 6 7 8 9...

Страница 49: ...g 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com COMPONENT LAYOUT EXC...

Страница 50: ...C Inc SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com COM...

Страница 51: ...SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com COMPONEN...

Страница 52: ...SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com COMPONENT...

Страница 53: ...Inc SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com COMPO...

Страница 54: ...50 1998 SGC Inc PROCESSOR PCB SCHEMATIC 1 OF 4...

Страница 55: ...51 1998 SGC Inc PROCESSOR PCB SCHEMATIC 2 OF 4...

Страница 56: ...1998 SGC Inc 52 PROCESSOR PCB SCHEMATIC 3 OF 4...

Страница 57: ...53 1998 SGC Inc PROCESSOR PCB SCHEMATIC 4 OF 4...

Страница 58: ...54 1998 SGC Inc LPA PCB SCHEMATIC 1 OF 3...

Страница 59: ...55 1998 SGC Inc LPA PCB SCHEMATIC 2 OF 3...

Страница 60: ...C56 4 20p C4 220p L18 560 R17 1 8K 10 9 8 4 1 1 U4C 2274 TP1 TP2 12V R29 02 R10 100K R12 100K 3 2 1 4 1 1 U4A 2274 R16 1K R20 27K C3 001 FINALS C85 1 D7 914 5V ON OFF D13 914 R32 2 7K FWD T 1 2 3 4 5...

Страница 61: ...57 1998 SGC Inc EXCITER PCB SCHEMATIC 1 OF 8...

Страница 62: ...58 1998 SGC Inc EXCITER PCB SCHEMATIC 2 OF 8...

Страница 63: ...59 1998 SGC Inc EXCITER PCB SCHEMATIC 3 OF 8...

Страница 64: ...60 1998 SGC Inc EXCITER PCB SCHEMATIC 4 OF 8...

Страница 65: ...61 1998 SGC Inc EXCITER PCB SCHEMATIC 5 OF 8...

Страница 66: ...62 1998 SGC Inc EXCITER PCB SCHEMATIC 6 OF 8 5R...

Страница 67: ...63 1998 SGC Inc EXCITER PCB SCHEMATIC 7 OF 8...

Страница 68: ...64 1998 SGC Inc EXCITER PCB SCHEMATIC 8 OF 8...

Страница 69: ...65 1998 SGC Inc DISPLAY PCB SCHEMATIC 1 OF 1...

Страница 70: ...pdated list of SG 2020 accessories which includes prices Please note that price and delivery must be confirmed at the time of order All items can be ordered directly from SGC using your Mastercard or...

Страница 71: ...i o n 5 5 0 0 0 includes battery container 05 37 to hold ten D cell batteries batteries not included includes adjustable carry case strap for hand or shoulder 0 5 3 4 S G 2 0 2 0 F r o n t P a n e l C...

Страница 72: ...2 C A S E S H O U L D E R B A C K P A C K S G 2 0 2 0 S e r i e s 3 5 0 0 0 Shoulder back pack permits use of radio while in maneuvers Pack accommodates microphone handset and whip antennas in side p...

Страница 73: ...ited Frequency range 1 0 60 MHz Power rating 100W PEP maximum or CW 75W HF and 100W VHF SWR Less than 1 3 to 1 Tune power 3 watts nominal Supplied with 2 9 ft cables for coaxial and DC power Black ano...

Страница 74: ...R T A B L E T A P E W H I P A N T E N N A 6 F t S G 2 0 2 0 S e r i e s 5 0 0 0 0 VariTune system Tunable tape whip antenna for use during transit or march Overall system is 6 ft tape whip is 2 ft lon...

Страница 75: ...S G 2 0 2 0 Q S L C a r d s 1 9 9 5 Package of 25 attractive SG 2020 QSL cards Please note that price and delivery must be confirmed at the time of order 91 00 PUBLICATIONS MANUALS 71 1998 SGC Inc SGC...

Страница 76: ...nology which processes the signal to eliminate unwanted noise and improve incoming signal AM Amplitude modulation low efficiency type of radio transmission generally used for broadcast AM radio statio...

Страница 77: ...transmit on one frequency while shore stations transmit a different frequency DSP Digital signal processing technology which eliminates unwanted noise to enhances a signal DXpedition A contest in whic...

Страница 78: ...ODULATION The process of varying the amplitude frequency or phase of a carrier or signal OSCILLATOR A device that produces alternating current OSCILLOSCOPE A display of frequency on a cathode ray tube...

Страница 79: ...al service involving teletypewriters connected through automatic exchange teleprinter exchange TRANSCEIVER A term applied to equipment that both transmits and receives USB Upper sideband UTC Coordinat...

Страница 80: ...1130 Sun N E US 7268 1245 1145 Dly E C CAR 21400 1300 1400 Dly N ATL CAR 3968 1400 1430 Dly Baja So Cal 7294 1530 1430 Dly Baja So Cal 7238 1600 1500 Dly Baja So Cal 14300 1600 0200 Dly ATL CAR PAC 14...

Страница 81: ...ific Coast Also intership non commercial fishing 2182 0 Distress safety and calling 2203 0 Gulf of Mexico Also intership non commercial fishing 2214 0 All Areas 2635 0 ITU Regions 2 3 ITU RR 4193 Not...

Страница 82: ...s are upper single sideband USB and include weather forecasts and warnings Broadcasts on 2670 kHz include navigational warnings search and rescue broadcasts and weather forecasts and warnings Frequenc...

Страница 83: ...300 13089 0750 2670 0930 6501 1530 6501 2130 13089 2205 2670 Station USCG Marianas Section Guam Note Except for 2670 kHz these frequencies are also the coast transmit portion of radiotelephone channel...

Страница 84: ...vailable for FREE download HF SSB USER S GUIDE http www sgcworld com pub sgc Books hfguide pdf SMARTUNERS FOR STEALTH ANTENNAS http www sgcworld com pub sgc Books stealth pdf SG 231 SMARTUNER MANUAL h...

Страница 85: ...press or implied warranties and liability for any incidental consequential special or exemplary damages in connection with its product even if SGC or its agents are advised that such damages are fores...

Страница 86: ...e activated by CMD BW Each activation steps to the next filter or DSP level in a loop For example The ADSP2 will step through 13 dB Noise Reduction then 26 dB Noise Reduction then back to no ADSP2 CMD...

Страница 87: ...MHz 2 29 Installation Base 9 Installation Mobile 10 Key 7 13 17 26 33 Light backlight 16 17 21 23 Lockout 24 Memory 16 20 22 24 Memory Frequencies 20 Microphone 5 Microprocessor 29 30 Mixer 2 29 30 Mo...

Страница 88: ...Poor 4 Very Good 2 Acceptable 5 Excellent 0 1 2 3 4 5 1 First impression from the box 2 First impression front panel function and features 3 Ease of operation 4 Receiver sensitivity 5 Receiver selecti...

Страница 89: ...No Compromise Communications SG 2020 PortaPak USER MANUAL SGC catalog number 05 32 Document number N80100533 D...

Страница 90: ...acing vessels as well as fishing boats tugs and commercial craft are equipped with SGC equipment In fact an SGC radiotelephone provided the only communications available on a past Polar expedition by...

Страница 91: ...ble batteries such as nickel cadmium NiCad cells Following are length of operation estimates when using dry cells and rechargeable batteries Note that these times are approximate and will depend on th...

Страница 92: ...oper operation with battery system This is a quick test to determine that the system is operational Requirements 10 D batteries either dry cell or rechargeable NiCad NOT included 1 Loosen the three th...

Страница 93: ...nnector 10 Turn on the radio 11 Press and hold the CMD and SPEED buttons to activate the Voltmeter Display 12 The radio LCD should display 16 to 18 volts if you are using new dry cells or 12 8 to 14 v...

Страница 94: ...nd storage for the microphone it can also be carried by hand The PortaPak has an adjustable nylon strap and can be easily car ried over the shoulder or This is the correct way to store the microphone...

Страница 95: ...SGC Building 13737 S E 26th St Bellevue WA 98005 USA P O Box 3526 98009 Fax 425 746 6384 or 746 7173 Tel 425 746 6310 or 1 800 259 7331 E mail sgc sgcworld com Web site http www sgcworld com 7 1998 S...

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