Drake_TR-4C_user.pdf

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1、Downloaded by? ? Amateur Radio Directory TABLE OF CONTENTS CHAPTER I INTRODUCTION . l - l . GENERAL DESCRIPTION . l-2. MANUAL COVERAGE . CHAPTER II 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 2-10. 2-11. 2-12. CHAPTER III OPERATION . 3-l. GENERAL. . 3-2. MODE SWITCH . 3-3. BLANKER SWITCH . 3-4. VFO

2、DIAL. . 3-5. TUNING PROCEDURE . 3-6. BIAS ADJUSTMENT . 3-7. 3-8. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . l - 3 INSTALLATION. . UNPACKING. LOCATION . MOBILE INSTALLATION . POWER REQUIREMENTS . MOUNTING . ANTENNA. . SPEAKER. MICROPHONE . STATIONARY INSTALLATION . POWER REQUIREME

3、NTS . VIEWING ANGLE . ACCESSORIES . FRONT PANEL CONTROLS . OTHER CONTROLS . TUNE UP . SSB OPERATION . Page l - l l - l l - l 2 - l 2 - l 2 - l 2 - l 2 - l 2 - l 2 - l 2 - l 2 - l 2-2 2-2 2-2 2-2 3-l 3 - l 3 - l 3 - l 3 - l 3 - l 3-l 3-3 3-4 3-5 3-5 i TABLE OF CONTENTS (continued) 3-9. 3-10. 3-11. 3-

4、12. 3-13. CHAPTER IV 4-l. 4-2. 4-3. CHAPTER V 5-l. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8. 5-9. 5-10. 5-11. 5-12. 5-13. 5-14. 5-15. 5-16. 5-17. 5-18. 5-19. CW OPERATION. . AM OPERATION . OPERATION NEAR BAND EDGES-. OPERATION WITH A LINEAR AMPLIFIER . NOVICE OPERATION. . THEORY OF OPERATION. . GENERAL. .

5、RECEIVER CIRCUITRY . TRANSMITTER CIRCUITRY . MAINTENANCE. . . . SERVICE DATA. . . . . TOP COVER REMOVAL . . BOTTOM COVER REMOVAL TUBE REPLACEMENT . . TROUBLE SHOOTING . . TEST EQUIPMENT. . . . ALIGNMENT PROCEDURES CRYSTAL CALIBRATOR . 9.0 MHz OSCILLATOR . . INJECTION CRYSTAL OSCILLATOR . VFO ADJUSTM

6、ENT . INJECTION COUPLER . RECEIVER IF . BALANCED MODULATOR AND CARRIER BALANCE . FILTER MATCHING TRANSFORMER. MIXER AND IF ALIGNMENT . PA NEUTRALIZATION . . TRANSMITTER NEUTRALIZATION. . S METER ADJUSTMENT. . Page 3-6 3-6 3-6 3-6 3-7 4-l 4-l 4-l 4-2 5-1 5-l 5-l 5-l 5-l 5-l 5-2 5-2 5-2 5-2 5-2 5-2 5-

7、2 5-5 5-5 5-6 5-6 5-6 5-6 5-6 ii LIST OF ILLUSTRATlONS Figure l - l . 2 - l . 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 3 - l . 4 - l . 5-1. 5-2. 5-3. 5-4. 5-5. TR-4C SIDEBAND TRANSCEIVER. MICROPHONE CONNECTIONS . REAR CHASSIS CONNECTORS .- . ELECTRICAL CONNECTIONS REQUIRED FOR MOBILE INSTALLATION. MO

8、BILE INSTALLATION MOUNTING OPTIONS. VIEWING ANGLE OPTIONS IN A STATIONARY INSTALLATION. CONNECTING THE AC-4 POWER SUPPLY AND MS-4 SPEAKER. CONNECTING THE AC-4 POWER SUPPLY, RV-4C REMOTE VFO AND A LINEAR AMPLIFIER . CONNECTING THE AC-4 POWER SUPPLY AND THE L-4B LINEAR AMPLIFIER. CONNECTING AN EXTERNA

9、L RECEIVER. FRONT PANEL CONTROLS . BLOCK DIAGRAM. ALIGNMENT LOCATIONS, TOP VIEW. ALIGNMENT LOCATIONS, BOTTOM VIEW. AC-4 POWER SUPPLY SCHEMATIC. . DC-4 POWER SUPPLY SCHEMATIC. TR-4C SCHEMATIC . Page l - 2 2 - l 2 - 2 2 - 3 2 - 4 2-5 2 - 5 2 - 6 2 - 6 2 - 7 3 - 2 4 - 4 5 - 8 5 - 9 5-11 5-11 5-l 1 . .

10、. III CHAPTER I INTRODUCTION l-l. GENERAL DESCRIPTION. an MC-4 Mobile Console, and a TR-4C VHF Modification Kit. The TR-4C is a 300 Watt HF single sideband trans- ceiver which covers the 80 through 10 meter amateur bands. AM and CW modes are also included. The TR-4C requires either an R. L. Drake AC

11、-4, 120 V AC power supply, or an R. L. Drake DC-4, 12 V DC power supply. The TR-4C features a high-stability linear permeability tuned VFO and two 8 pole crystal lattice filters for sideband selec- tion. Available accessories include an RV-4C Remote VFO, a matching MS-4 Speaker, an FF-1 Fixed Freque

12、ncy Adapter, a 34-PNB Noise Blanker, 1-2. MANUAL COVERAGE. This manual provides sufficient information for operation of the TR-4C Transceiver by a licensed operator and for repair and maintenance by an ex- perienced electronics technician. Chapter II provides installation instructions and illustrate

13、s interconnec- tion with accessories. Chapter III describes operation procedures. Chapter IV presents theory of operation supported by a block diagram. Chapter V provides maintenance instructions and parts ordering infor- mation. l-l SPECIFICATIONS GENERAL: Frequency Coverage: 3.5 to 4.1 MHz, 7.0 to

14、 7.6 MHz, 13.9 to 14.5 MHz, 21 .O to 21.6 MHz and 28.5 to 29.1 MHz; accessory crystals are available for the 28.0 to 28.6 MHz and 29.1 to 29.7 MHz segments of the 10 meter band. Mode of Operation: Lower Sideband, Upper Sideband, AM and CW. Frequency Stability: Total drift is less than 100 Hz after w

15、arm up. Total frequency change is less than 100 Hz for a + - 10% line voltage change. Power Supply Requirements: + 650 Volts DC at 300 mA average and 500 mA maximum with 10% regulation from 100 to 500 mA and a maximum ripple 1%. + 250 Volts DC at 200 mA with 10% regulation from 170 mA to 200 mA. Thi

16、s includes the effect of the 650 Volt supply change if both voltages are obtained from the same transformer. Maximum ripple must be less than l/4%. -45 to -65 Volts DC adjustable filtered bias into 33 K Ohm load. 12.6 Volts AC or DC at 5.5 Amperes. Antenna Impedance: Nominal 52 Ohms (VSWR less than

17、2: 1). Better than +- 1 kHz when calibrated at the nearest 100 kHz calibra- tion point. Dial Calibration: Dimensions: Weight: RECEIVER: Sensitivity: AGC: Selectivity: IF Frequency: Audio Output: Output Impedance: TRANSMITTER: Power Input: Output Impedance: Average Distortion Products: Microphone Inp

18、ut: 5.5 in. High x 10.75 in. Wide x 14.375 in. Deep.13.97cm.Highx 27.31 cm. Wide x 36.51 cm. Deep. 16 lbs. (7.26 kg.) S + N Less than 0.5 m i c r o V for 10 dB N Less than 3 dB variation for 60 dB change in input signal. 2.1kHzz at -6dB Band 3.4 kHz z at -60dB. 9 MHz. 3 Watts with less than 10% dist

19、ortion. 4 Ohms. 300 Watts PEP SSB, 260 Watts CW and 260 Watts PEP AM. Nominal 52 Ohms. The odd order products are down 30 dB below PEP. High Impedance. l - 3 Downloaded by? ? Amateur Radio Directory CHAPTER II INSTALLATION 2-1. UNPACKING. Carefully remove the unit from the shipping carton and examin

20、e it for evidence of damage. If any damage is discovered, immediately notify the trans- portation company that delivered the unit. Be sure to keep the shipping carton and packing material as the transportation company will want to examine them if there is a damage claim. Keep the carton and packing

21、material even if no shipping damage occurs. Having the original carton available makes packing the unit much easier if it should ever be necessary to store it or return it to the factory for service. NOTE Fill out the enclosed registration card and return it to the factory immediately to insure regi

22、stration and validation of the warranty. 2-2. LOCATION. The location of the TR-4C is not critical. However, care should be taken to insure that adequate clear- ance is provided to insure free circulation of air around the unit and to allow access to the side controls and connectors. Do not cover the

23、 top of the cabinet with books, papers or other equipment as overheating may result. 2-3. MOBILE INSTALLATION. 2-4. POWER REQUIREMENTS. Refer to figure 2-2 for rear chassis connector identification. The TR-4C may be installed in any vehicle with a 12 volt dc negative ground system. An R. L. Drake Mo

24、del DC-4 Power Supply is required for a mobile installation. The recommended location for the DC-4 is on the passenger side of the firewall. Refer to figure 2-3 for the electrical connections required. 2-5. MOUNTING. Mount the TR-4C in a con- venient location below the dash with an R. L. Drake Model

25、 MMK-3 Mobile Mounting Kit. Refer to figure 2-4 for various mounting options. Be sure to allow adequate clearance for air circulation and cable connections. Turn the TR-4C off. Connect the power cable between the TR-4C and the DC-4. Coil up any excess cable and tape it in place out of sight. Connect

26、 the black wire from the power supply to a convenient ground. Route the red wire from the power supply through the firewall and connect it to the positive battery terminal or the starter solenoid. The fuse holder should be installed as close to the solenoid as possible. Shorten both of these wires a

27、s much as possible. 2-6. ANTENNA. Install a mobile antenna as rec- ommended by the antenna manufacturer. Connect a coaxial cable from the antenna to the SO-239 connector at the rear of the TR-4C. 2-7. SPEAKER. DO NOT connect the TR-4C to the speaker of the car radio. Install a separate speaker for u

28、se with the TR-4C. The R. L. Drake Model MC-4 Mobile Console is recommended for this type of installation. It includes a speaker and a wattmeter and is designed to mount over or under the TR-4C. 2-8. MICROPHONE. Use a microphone with a flat frequency response. The microphone should have a cardioid p

29、attern to reduce pickup from the back and sides. Connect the microphone as illustrated in figure 2-l to insure proper performance. L-_ S-230 CONNECTOR MICROPHONE Figure 2- 1. Microphone Connections 2 - l 2-9. STATIONARY INSTALLATION. 2-l 1. VIEWING ANGLE. Refer to figure 2-5 for illustrations of vie

30、wing angle options. See Chapter V for bottom cover removal. 2-10. POWER REQUIREMENTS. An R. L. Drake Model AC-4 Power Supply rated at 120 volts ac, 50/60 Hz, is required for stationary installations. The AC-4 is designed to fit inside the MS-4 speaker cabinet. 2-l 2. ACCESSORIES. Refer to figures 2-

31、6 through 2-9 for the electrical connections required to operate the TR-4C with the various recommended accessories. NOTE If the old RV-3 is to be used it must be modified as follows: Install a 22 K, 2 Watt resistor from pin 1 of the tube (OA2) to the terminal of the FUNCTION switch to which the ora

32、nge wire is attached. GROUND ANTENNA POWER EXTERNAL EXTERNAL RECEIVER RECEIVER ANTENNA MUTE Figure 2-2. Rear Chassis Connectors 2 - 2 Downloaded by? ? Amateur Radio Directory Downloaded by? ? Amateur Radio Directory CHAPTER III OPERATION 3-l. GENERAL. Figure 3-l illustrates and describes all front p

33、anel controls and indicators on the TR-4C Transceiver. Controls and connectors located on the rear and sides of the unit are described under “other controls” below. Rear chassis connectors are identi- fied in figure 2-2. 3-2. MODE SWITCH. In the SSB position, the receiver portion functions until the

34、 transmitter is energized either by talking into the microphone or actuating the microphone push-to-talk switch. The transmitter then emits an upper or lower sideband signal depending on the setting of the SIDEBAND switch. In the X-CW position, the receiver portion functions until the key is closed.

35、 The TR-4C then goes into the transmit mode, a CW sidetone is energized and the carrier is shifted approximately 1 kHz from the received frequency. The unit will remain in transmit during CW keying and will return to receive when keying is stopped briefly. NOTE: The SIDEBAND switch must be in the X

36、position when the Mode switch is on X-CW or X-AM. It should also be noted that if the relays fail to close occasionally when the key is used, advance the VOX gain (screwdriver adjust on the right side of the chassis) until positive relay action is obtained. In the X-AM position, a controlled carrier

37、 screen modulator is incorporated for AM transmission and a diode detector is used for AM reception. Transmit and receive switching is accomplished by VOX or push-to-talk as on SSB. 3-3. BLANKER SWITCH. The noise blanker may be left on except when there is a strong signal within 5 kHz of the receive

38、d signal. A strong signal which falls within the 10 kHz wide crystal filter in the noise blanker, and outside the 2.1 kHz crystal filter in the TR-4C, will operate the noise blanker gate circuit causing distortion products. This limita- tion in the noise blanker is caused by the necessity of having

39、a bandwidth in the blanker wide enough to minimize stretching of noise pulses before blank- ing. Usually this limitation is no problem under normal operating conditions. 3-4. VFO DIAL. This dial consists of 2 transparent discs which display concentric scales and which rotate at different speeds. The

40、re are 2 scales on each disc. The upper scale on each disc is used for all bands except 20 meters where the lower scale is used. Zero to 100 kHz is indicated on one disc and hundreds of kHz is indicated on the other. The frequency of the operating signal is the sum of the frequencies indicated by th

41、e BAND switch and the VFO dial, for example: BAND switch frequency 7.000 MHz 100 kHz dial .200 1 kHz dial .072 Operating frequency 7.272 MHz This dial may be calibrated over a short range by the following procedure: a. b, C. Set the Mode switch to CAL. Tune the TR-4C to zero beat with the nearest 10

42、0 kHz calibrator signal. Hold the tuning knob stationary and rotate the knob skirt until the dial displays the correct frequency. 3-5. TUNING PROCEDURE. CAUTION Under no circumstances should operation of the TR-4C be attempted until it is connected to a proper antenna or a dummy load. Always allow a

43、 two minute warm up period after the TR-4C is turned on before transmitting. 3-6. BIAS ADJUSTMENT. Before any type of operation is attempted, it will be necessary to set the PA bias to the correct value. Proceed as follows: a. Turn on the TR-4C with the RCVR GAIN control. b. Rotate the XMTR GAIN con

44、trol fully counter- clockwise. 3 - l FRONT PANEL CONTROLS 1. 2. 3. 4. 5. 6. 7. 8. S meter: Indicates relative level of received sig- nals. Indicates transmitter AGC when trans- mitting. Plate meter: Indicates plate current in the final amplifier. Indicates relative RF power when LOAD control (6) is

45、pushed in. PLATE control: Tunes power amplifier pi- network circuit for resonance. RF TUNE control: Peak tunes the receiver RF amplifier, the transmitter driver grid and plate tuned circuits. UPPER sideband indicator lamp: Glows when upper sideband is selected. LOAD control: Matches the TR-4C to the impedance of the antenna. Push in to display relative R F power on plate meter (2). VFO dial: Displays portion of operating fre- quency from zero to 600 kHz. Reading must be added to BAND switch