SS-3900EGHP_SvcManual.pdf

SS-3900EGHP TABLE OF CONTENTS PAGE CHAPTER 1 SPECIFICATIONS 1.0 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CHAPTER 2 OPERATION 2.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2.1 Control threshold less than 0.5 V Noise Blanker RF type Audio Output Power 2.5W 10% THD Audio Frequency Response 300 to 2500 Hz Built-in Speaker 8 Ohms, 4 Watts External Speaker (Not Supplied) 8 Ohms, 4 Watts (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE) - 2 - SS-3900EGHP CHAPTER 2 OPERATION Figure 2-1 Front Panel 2.0 INTRODUCTION This section explains the basic operating procedures for the SS-3900EGHP Amateur 10 meter mobile transceiver. 2.1 CONTROL AND CONNECTIONS 2.1.1 FRONT PANEL Refer to the above Figure 2-1 for the location of the following controls. 1. ON/OFF VOLUME CONTROL This knob controls the volume and power to the radio. To turn radio on, rotate the knob clockwise. Turning the knob further will increase the volume of the receiver. 2. SQUELCH CONTROL This knob is used to eliminate background noise being heard through the receiver, which can be disturbing when no transmissions are being heard through the receiver. To use this feature, turn the knob fully counterclockwise and then turn clockwise slowly until the background noise is just eliminated. Further clockwise rotation will increase the threshold level which a signal must overcome in order to be heard. Only strong signals will be heard at a maximum clockwise setting. 3. MIC GAIN CONTROL Adjusts the microphone gain in the transmit modes. This controls the gain to the extent that full talk power is available several inches away from the microphone. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? - 3 - 4. RF GAIN CONTROL This control is used to reduce the gain of the RF amplifier under strong signal conditions. 5. ECHO/TIME CONTROL This control is used to control the echo effects. 6. BAND SELECTOR This switch is used to select the band. 7. MODE SWITCH This switch allows you to select one of following operating modes: CW/FM/AM/LSB/USB. 8. COARSE/FINE CONTROL Allows tuning of the receive or transmit frequency above or below the channel frequency. Although this control is intended primarily to tune in SSB/CW signals, it may be used to optimize AM/FM signals as described in the Operating Procedure paragraphs. Coarse operates both TX/RX but Fine only in RX. 9. CHANNEL SELECTOR This control is used to select the desired transmit and receive channel. 10. FRONT PANEL METER The front panel meter allows the user to monitor signal strength, RF output power and SWR level. 11. RF POWER H/M/L SWITCH This switch allows the user to select HI, MID or LO RF power output. 12. NB-ANL/OFF SWITCH When the switch is place in the NB/ANL position, the Automatic Noise Limiter (ANL) in the audio circuits and the RF Noise Blanker (NB) is also activated. The RF Noise Blanker is very effective in eliminating repetitive impulse noise such as ignition interference. 13. S-RF/SWR SWITCH In the S-RF position, the meter swings proportionally to the strength of the received signal. When transmitting, the meter indicates relative RF output power. When in the SWR position, the Standing Wave Ratio (SWR) of your antenna. There are no adjustment because the SWR circuit in this radio calibrates itself automatically. 14. TALKBACK (TB) SWITCH This switch is used to monitor the sound feedback effects. 15. RX/TX LED The red LED indicates the unit is in the transmit mode. The green LED indicates the unit is in the receive mode. 16. CHANNEL DISPLAY The channel display indicates the current selected channel. 2.1.2 REAR PANEL - 4 - Figure 2-2 represents the location of the following connections: Figure 2-2 Rear Panel 1. ANTENNA This jack accepts a 50 ohms coaxial cable with a PL-259 style plug. 2. POWER This accepts 13.8 VDC power cable with built-in fuse. The power cord provided with the radio has a black and red wire. The black goes to negative and the red goes to positive. 3. F.C. This connector is used for an external frequency counter which indicates the frequency of the selected channel. 4. CW KEY The CW key is used for Morse Code operation. To operate this mode, connect a CW key to this jack, and place the MODE switch in the CW position. 5. EXTERNAL SPEAKER This jack accepts a 4 - 8 ohm, 5watt external speaker. When the external speaker is connected to this jack, the built-in speaker will be disabled. 2.2 MICROPHONE ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? - 5 - The receiver and transmitter are controlled by the push-to-talk switch on the microphone. Press the switch and the transmitter is activated, release switch to receive. When transmitting, hold the microphone two inches from your mouth and speak clearly in a normal voice. This transceiver comes complete with a low impedance dynamic microphone. 2.3 OPERATION 2.3.1 PROCEDURE TO RECEIVE 1. Be sure that power source, microphone and antenna are connected to the proper connectors before going to the next step. 2. Turn unit on by turning the VOL knob clockwise. 3. Set the VOL to a comfortable listening level. 4. Set the MODE switch to the desired mode. 5. Listen to the background noise from the speaker. Turn the SQ knob slowly clockwise until the noise just disappears. The SQ is now properly adjusted. The receiver will remain quiet until a signal is actually received. Do not advance the control too far or some of weaker signals will not be heard. 6. Set the CHANNEL selector switch to the desired channel. 7. Set the RF GAIN control fully clockwise for maximum RF gain. 8. Adjust the COARSE/FINE control to clarify the SSB signals or to optimize AM/FM signals. 2.3.2 PROCEDURE TO TRANSMIT 1. Select the desired channel of transmission 2. Set the MIC GAIN control fully clockwise. 3. If the channel is clear, depress the push-to-talk switch on the microphone and speak in a normal voice. 2.4 ALTERNATE MICROPHONES AND INSTALLATION - 6 - For best results, the user should select a low-impedance dynamic type microphone or a transistorized microphone. Transistorized type microphones have low output impedance characteristics. The microphones must be provided with a four-lead cable. The audio conductor and its shielded lead comprise two of the leads. The third lead is for transmit control and fourth is for receiving control. The microphone should provide the functions shown in the schematic below (Figure 2-3). 4 WIRE MIC CABLE Pin Number Mic Cable Lead 1 Audio Shield 2 Audio Lead 3 Transmit Control 4 Receive Control Figure 2-3 Your Transceiver Microphone Schematic Figure 2-4 Microphone plug pins numbers viewed from rear of pin receptacle. CHAPTER 3 ? ? ? ? ? ? ? ? ? ? ? - 7 - SS-3900EGHP CIRCUIT DESCRIPTION 3.0 INTRODUCTION This section explains the technical theory of operation for the SS-3900EGHP Amateur 10 meter mobile transceiver. 3.1 PLL CIRCUIT The Phase Lock Loop (PLL) circuit is responsible for developing the receivers first local oscillator signal and the transmitters exciter signal. The PLL circuit consists primarily of IC5, IC10, TR24, TR25 and TR26. The PLL circuit is programmed by the rotary channel switch GPS-0501. The GPS- 0501 communicates the correct binary data information to the programmable divider inside of IC5. IC5 then controls the VCO (Voltage Controlled Oscillator) to oscillate on the correct frequency. This signal is fed either into the receivers first mixer (for receive operation) or the transmitters mixer (for transmit operation). 3.2 RECEIVER CIRCUIT The incoming RF signal comes into the radio via the antenna and into the front-end pre-amp, TR17. The RF signal is fed into the mosfet mixer circuit of TR18 and then into the AM/FM/SSB IF section of the receiver (depending on the mode of operation). The signal is then detected by either the AM/FM detector or product detector and then fed to the audio amplifier section of the receiver and finally out to the speaker. 3.3 TRANSMITTER MODULATION CIRCUIT (i) The transmitter modulation circuit modulates the low-level RF signal from the PLL exciter circuit with the users audio voice signal from the microphone. The audio from the microphone is then amplified and fed into the transmit amplifier circuit. (ii) If the transceiver is in the AM mode, the AF Power amplifier modulates the last RF amplifier, which produces a true amplitude modulated RF signal. (iii) If the transceiver is in the FM mode, the audio signal is not mixed with 10.6975MHz oscillator but instead phase modulates the basic exciter signal from the PLL circuit in the TX mixer. (iv) If the transceiver is in the SSB mode, the audio signal is mixed with the 10.6975MHz oscillator for LSB and 10.6925MHz for USB in IC3. 3.4 TRANSMITTER AMPLIFIER CIRCUIT The transmitter takes the basic exciter signal from the TX mixer and amplifies it through a series of amplifiers consisting of TR46, TR45, TR44, TR43 and TR56 where it is then sent out to the antenna connector. - 8 - ? - 9 - CHAPTER 4 ALIGNMENT - 10 - 4.0 REQUIRED TEST EQUIPMENT ? DC Power Supply (13.8VDC, 10A) ? RF Wattmeter (2560 MHz, 50W) ? Multimeter (Digital) ? Automatic Modulation Meter ? Audio Signal Generator ? Frequency Counter (100 MHz) ? RF Signal Generator (100 MHz) ? Automatic Distortion Meter ? Oscilloscope (50 MHz) ? Sinad Meter 4.1 ALIGNMENT PROCEDURES This transceiver has been aligned at the factory and does not require any adjustments at installation. The required test equipment listed are used for the test setup or alignment shown in Figure 4-1 Transmitter Test Setup and Figure 4-2 Receiver Test Setup. These test setups are used in part or total during the following adjustments and refer to Page 15 for adjustment location. 4.1.1 PLL ALIGNMENT ITEM U.U.T. SETTING ADJUST POINT MEASUREMENT VCO Disconnect “short PCB” from TP7, TP8 Check Item Action Whip antenna (option) If cracked or broken, replace it. Coaxial cable If sheath is cracked, seal with vinyl tape. If immersed with water, install new coaxial cable. Coaxial & power plug connections If loosened, reconnect. If corroded, clean contacts. Battery connection If corroded, clean power terminals. Ground terminal If corroded, clean terminal. 5.2 FUSE REPLACEMENT To protect the equipment from serious damage, a fuse is provided on the power supply lines. The fuse protect against overvoltage / reverse polarity and internal fault of the equipment. If the fuse has blown, first find out the cause of the trouble before replacing it. A fuse rated for more than the transceiver requirement should not be used, since it may permanently damage the equipment. Damage due to overfusing is not covered by the warranty. SS-3900EGHP CHAPTER 6 DIAGRAMS & PARTS LIST - 16 - 6.0 GENERAL Information on most electrical and mechanical parts is included in the parts list. The reference designators are in alphanumeric order. 6.1 ORDERING REPLACEMENT PARTS Parts orders should be referred to the Parts Department at: Ranger Communications, Inc. 401 W. 35Th ST., # B, NATIONAL CITY, CA 91950-7909 Fax: (619) 426-3788 ROTARY SWITCH PCB (EPT360022Z) - 17 - (Component Side) PART LIST: SS-3900EGHP ROTARY SW P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT360022Z ROTARY SW PCB 2 R322,R323,R324 RCU141024Z C/F/R 1K 1/4W 3 R315 RCM144714A C/F/R 470 1/4W 4 R313,R316,R317,R318,R319, R321 RCM141024A C/F/R 1K 1/4W 5 R312,R314,R320 RCM141024B C/F/R 1K 1/4W 6 CH SW EWRT32000S ROTARY SW GPS-0501 7 J304 EX07N40014 PCB CONN/S 10PIN 8 J305 WX01070703 JUMPER WIRE 7x3x7 9 D313,D314,D312,D315,D323 ,D324,D326,X1,D316 WX01070704 JUMPER WIRE 7x4x7 10 D325 WX01070705 JUMPER WIRE 7x5x7 11 J303,D311 WX01070710 JUMPER WIRE 7x10 x7 12 J302 WX01070708 JUMPER WIRE 7x8x7 DISPLAY PCB (EPT360032A) ? ? ? ? ? ? - 18 - (Component Side) PART LIST: SS-3900EGHP DISPLAY P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT360032A DISPLAY PCB 2 DISPLAY PCB EX03N40003 LED DISPLAY (RED) 3 D309(R/T) EX01N40004 LED (RED/GREEN) ANT PCB (EPT360042Z) - 19 - (Component Side) (Copper Side) PART LIST: SS-3900EGHP ANT P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 4 EPT360042Z ANT PCB 5 R9 RCY010004Z CHIP/F/R 0 0.1W 6 R1 RCY014714Z CHIP/F/R 470 0.1W 7 R3,R4 RCY011014Z CHIP/F/R 100 0.1W 8 R2 RCY013314Z CHIP/F/R 330 0.1W 9 R5,R11 RCY011024Z CHIP/F/R 1K 0.1W 10 R10,R12 RCY012224Z CHIP/F/R 2.2K 0.1W 11 R7 RCY011034Z CHIP/F/R 10K 0.1W 12 C5 RCY011534Z CHIP/F/R 15K 0.1W 13 C7 CK1059AB1A CHIP/C 0.5PF 50WV 14 C6 CK1030AB1A CHIP/C 3PF 50WV 15 C3,C4 CK2104AB7R CHIP/C 0.1F 25WV 16 C1,C2 CK1102AB7L CHIP/C 0.001F 50WV 17 Q1 TY2SC2712G TR 2SC2712GR-TE85L 18 D3 EDSS00355Y DIODE 1SS355 19 D1,D2 EDHM0198SY DIODE HSM198S 20 D4 EDMA0028TY DIODE MA28T 21 L1 ECRFZ10204 C.M.E. BRAND CORE BF2159576 22 VR1 RE10300009 S/F/R 10K 23 JP1 WX01070715 JUMPER WIRE 7x15x7 MIC PCB (EPT360050Z) - 20 - (Component Side) PART LIST: SS-3900EGHP MIC P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT360050Z DIP PCB 2 C503,C504 CC0501027L C/C 0.001F 50WV 3 C502 CC0504727L C/C 0.0047F 50WV 4 L501 ECCHK16001 CHOKE COIL 5.6H 5 L502 ECBAD18550 BEAD COIL 3.5x6x1.2 6 MIC PCB EX06N41020 MIC JACK EB-2000B PCB (EPT0SSB51J) - 21 - (Component Side) (Copper Side) PART LIST: SS-3900EGHP EB-2000B P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT0SSB51J EB-2000B PCB 2 R3 RCY011014Z CHIP/F/R 100 0.1W 3 R17,R27 RCY011024Z CHIP/F/R 1K 0.1W 4 R7,R26 RCY012224Z CHIP/F/R 2.2K 0.1W 5 R29,R30 RCY014724Z CHIP/F/R 4.7K 0.1W - 22 - 6 R22,R23,R24,R32 RCY011034Z CHIP/F/R 10K 0.1W 7 R1,R2,R5,R28 RCY012234Z CHIP/F/R 22K 0.1W 8 R6,R13,R15 RCY013334Z CHIP/F/R 33K 0.1W 9 R4,R20,R33,R34 RCY014734Z CHIP/F/R 47K 0.1W 10 R21,R31 RCY011044Z CHIP/F/R 100K 0.1W 11 R16 RCY011524Z CHIP/F/R 1.5K 0.1W 12 R14,R18 RCY012734Z CHIP/F