Transcript
OPERATING INSTRUCTIONS
TYPE 1360-A
MICROWAVE OSCILLATOR
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GENERAL A
RADIO
COMPANY
O·PERATING INSTRUCTIONS
TYP·E 1360-A
MICROWAVE OSCILLATOR Form 1360-0100-A April, 1962
Copyright 1962 by General Radio Company West Concord, Massachusetts, USA
GENERAL WEST
R A D I 0
CONCORD,
COMPANY
MASSACHUSETTS,
USA
TABLE
OF
CONTENTS
Section 1. INTRODUCTION . 1.1 1.2 1.3 1. 4
Purpose. • . Description . Accessories. Mounting . .
1 1 1 2 2
Section 2. OPERATING PROCEDURE .
2
2.1 Installation 2.2 Operation. • . . . . . . . . 2.3 Modulation . . . . • . . . .
2 2
3
Section 3. PRINCIPLES OF OPERATION
4
3.1 Reflex Klystron Oscillator 3.2 Electronic Circuit . 3. 3 Output System . . • . . . Section 4. SERVICE AND MAINTENANCE 4.1 4.2 4.3 4.4 4.5 4.6 4. 7 4.8 4.9
General. • . . . . . . . . . . . Removal of Instrument from Cabinet. Routine Maintenance . Trouble-Shooting . . . . . . . . Tracking Adjustment. . . . . . . Mechanical Alignment of Oscillator Klystron Replacement . . . . . . Detector . . . . . . • . . . • . Table of Voltages and Resistances.
4 4 6 7 7 7 7 8 9
9 10 10 10
Figure 1. Panel view of the Type 1360-A Microwave Oscillator.
SPECIFICATim-IS Square-Wave: 50 cps to 200 kc, 12-v (rms) sine
FREQUENCY Range: 1.7 to 4.1 Gc in two ranges, 1.7 to 2.8 Gc
and 2.6 to 4.1 Gc. Fine Frequency Control (LF): Order of 1 Me, but
not functioning for square-wave modulation. Accuracy: ±1 %. Stability: Warm-up drift is approximately 0.15% during the first hour, total drift approximately 0.25%. After warm-up, frequency is stable within approximately 5 ppm. Residual FM: Approximately 0.5 ppm in the lower frequency range and 0.2 ppm in the higher. Dominant frequencies are 60 and 120 cps (with 60-cycle line frequency). OUTPUT POWER
Typically more than 100 mw above 2 Gc. Total variation in maximum output with frequency is 20 to approximately 300 mw. Attenuator: Relative calibration only. INTERNAL MODULATION Narrow-Band Sweep: 1 to 3 Me maximum at 1
kc a nd power-line frequency. Negative trigger pulse supplied. Square-Wave: 1 kc, adjustable approximately ±5%.
wave or 20-v (peak-to-peak) square wave; 20% minimum duty cycle from external source. Input impedance greater than 100 kilohms. Pulse: Rise and fall times approximately 0.2 ).
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FREQUENCY IN GIGACYCLES
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SECTION
3 PRINCIPLES
OF
3.1 REFLEX KLYSTRON OSCILLATOR. There are two frequency-determining elements in a reflex klystron: the tuning of the resonant cavity and the repeller voltage of the klystron. These two controls are ganged by driving the repeller potentiometer and the tuning plunger with a common shaft. The resistance card of the potentiometer is shaped to give the correct tuning characteristic. Two modes of oscillation (1.1 and 2.2) cover the range, and the switching is performed with a set of snapaction switches, which are operated by the plunger rack as the frequency dial is turned. The lights on the front panel indicate the active mode, and the arrows over the tuning knob indicate the direction to turn the knob to change modes. To adjust the tracking for differences between tubes, a set of trimming potentiometers, R100 through R104 and R108 through R111, is provided.
3.2 ELECTRONIC CIRCUIT. 3.2.1 GENERAL. As seen in the schematic diagram (Figure 12), the beam voltage and repeller voltage for the klystron are fed from regulated supplies with a common reference tube, V534. The other tubes used in the regulator are V531, V532, V533, V400 , and V401. The 10 - volt grid voltage for the klystron is controlled by the reference diode, D400.
OPERATION The modulator consists of a 1-kc RC phaseshift oscillator (one half of V202), a Schmitt trigger circuit (V200 and V201), and a sawtooth generator (V203 and V204), which is preceded by a differentiating stage (half of V202). The three block diagrams (Figures 4, 5 and 6) show how the modulating circuits are employed for various positions of the modulator switch. 3. 2. 2 EXTERNAL FM MODULATION. With the modulation switch in the EXT FM position, the modulation circuit of the Microwave Oscillator is not used (see Figure 4). The external modulation input is connected to the repeller through a 0.047-1-lf capacitor (C208) across a 470-kQ resistor (R232). The shunt capacitance of the repeller circuit is approximately 70 pf. The modulation sensitivity varies over the frequency range and is in the order of 0.2 Me per volt. The maximum voltage that should be applied is 50 volts peak or 35 volts rms. Voltages greater than this will drive the repeller positive at the low end of both tuning ranges. 3. 2.3 LINE-FREQUENCY SWEEP. With the modulation switch set at LINE FREQ SWEEP, a sine -wave signal from the power transformer (winding S9) is clipped in the Schmitt trigger, differentiated, and fed into the sawtooth generator (see Figure 4). The
OUTPUT@
Figure 4. Block diagram for operation of the Microwave Oscillator with external fm modulation, line-frequency sweep, internal 1-kc sweep, or on cw.
4
CW, SWEEP AND FM
PRINCIPLES OF OPERATION
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M· OUTPUT
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Figure 5. Block diagram for operation of tb.e Microwave Oscillator on standby operation or with exter-. nat pulse modulation.
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TION connector. The voltage applied may be either at least 12-volt rms sine wave or 20-volt peak-topeak square wave. Frequencies between 50 cps and 200 kc do not cause appreciable dissymmetry in the output. The symmetry can be adjusted with potentiometer R201 inside the "instrument. The Type 1210- C Unit RC Oscillator or 1217- B Unit Pulse Generator is recommended for square-wave modulation of the Type 1360- A Microwave Oscillator.! 3.2.9 EXTERNAL PULSE MODULATION. For external pulse modulation, the control grid of the klystron is connected to the output of the Schmitt trigger and the B+ bus of the modulator circuit is connected to the bias reference diode, D400 (see Figure 5). A positive pulse of approximately 20 volts peak -to-peak will cause the second tube in the Schmitt trigger circuit to stop conducting, turning on the beam of the klystron. For optimum shape of the rf output pulse, a driving pulse of the smallest possible amplitude should be used. If the duty cycle of the output pulse is too long (greater than 20%), the symmetry control R201 may have to be adjusted. 2 The Type 1217- B Unit Pulse Generator is recommended as a source for external pulse modulation.
3.3 OUTPUT SYSTEM. The rf energy is picked up with a coupling loop, which is movable in anattenuatortube and controlled by the OUTPUT control. The dial is calibrated to read db when the output is low, i.e., outside the nonlinear region of the attenuator. Since too close coupling to the cavity will overload the oscillator at some frequencies, an output monitor is provided. It consists of a directional coupler with a detector, and a meter that indicates the amount of power into the load. The meter is uncalibrated and serves to indicate the point of highest output at each frequency and shows overcoupling, which is indicated by a reduction in output with increased coupling. (The range where overloading might oc~ur is indicated on the OUTPUT dial). Do not operate the oscillator above the peak in output power because severe pulling then takes place, and the modulation characteristics are degraded.
Figure 7. Typical warm-up drift for the 1-kc oscillator.
3.2.8 EXTERNAL SQUARE-WAVE MODULATION. For external square-wave modulation, operation is similar to 1-kc square-wave modulation (see Figure 6) except that the modulating voltage is fed from an external source through the EXTERNAL MODULA-.
6
1When the power line is poorly regulated, amplitude stability is improved (with reduced frequency stability, refer to para. 3.2. 7) by switching to EXT...fl..and resetting R201. 2Jf the pulse is long, an appreciable frequency change may occur along the pulse. To eliminate this, use the EXTn.J position of the modulation switch, and adjust R201.
SE R V I C E AN D MA I N TEN AN C E
SECTION
4 SERVICE
AND
MAINTENANCE
4.1 GENERAL
WARNING Dangerous! y high voltages are present inside the instrument. Use great caution when operating the Microwave Oscillator with the cover removed. Use insulated screw-drivers for all adjustments.
The two-year warranty given with every General Radio instrument attests the quality of materials and workmanship in our products. When difficulties do occur, our service engineers will assist in any way possible. In case of difficulties that cannot be eliminated by the use of these service instructions, please write or phone our Service Department, giving full information of the trouble and of steps taken to remedy it. Be sure to mention the serial and type numbers of the instrument.
4.3 ROUTINE MAINTENANCE. For routine inspection of the operation of the Type 1360-A Microwave Oscillator, observe the swept mode on an oscilloscope when the oscillator is operated with the modulation switch in the 1 KC SWEEP position. In this mode of operation all the electronic circuits are active (see Figure 4) so that most defects will show up. The only test equipment requiredis alow-frequency oscilloscopeand a coaxial detector.
Before returning an instrument to General Radio for service, please write to our Service Department or nearest district office (see back cover), requesting a Returned Material Tag. Use of this tag will ensure proper handling and identification. For instruments not covered by the warranty, a purchase order should be forwarded to avoid unnecessary delay.
The klystron beam current can be checked with a 50-rna meter at test jack J1 (see Figure 8). This current should be between 15 and 30 rna with the selector switch in the CW position.
4.2 REMOVAL OF INSTRUMENT FROM CABINET. Remove the power cable, the two panel screws on each side of the panel, and the two screws in the rear of the instrument. The instrument can then be pulled forward out of the cabinet.
Occasionally a drop of clock oil should be applied to m9ving parts (bearings and pinions).
TABLE 3 Tubes and Diodes Involved
Measurement
Voltage
Klystron Beam Supply
325 volts between chassis or terminal D (positive) and terminals Z or B-.
V531, V532, V533, V534, D300, D301, D302, D303
R551
Klystron Bias Supply
9.5 to 10.5 volts between terminals Y (positive) and
D400
None
Klystron Heater Supply
6.1 to 6.4 volts between Terminals 24 (positive) and Z or B- at 115 (or 230) -volt power line.
D304, D305
None
Repeller Supply
425 volts between Z or B(positive) and R-.
V400, V401, D310, D311, D312, D313
R411
Adjustment
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4.4 TROUBLE-SHOOTING. 4.4.1 KLYSTRON OSCILLATOR AND POWER SUPPLY. Rf-oscillator failure is indicated by a zero or very low reading of the output monitor with the modulation switch set to CW and the most favorable attenuator setting. The fault is 1) in the power supply, 2) in the klystron tube, 3) in the tracking, or 4) in the detector diode. It is possible, but very unlikely, that the detector diode, DlOO, is burned out. This can be checked easily by comparison with an external rf detector. If the beam current (at Jl) is between 15 and 30 rna, the failure is probably in the repeller supply or the tracking. If the beam current is not normal, the fault is likely to be in the klystron tube, the beam supply, or the grid bias diode, D400. Table 3 lists correct voltages for the klystron oscillator. Since there are dangerously high voltages present in the instrument, use great caution when making these measurements.
If the measured voltages agree with those listed in Table 3 and the beam current is between 15 and 30 rna for cw operation, readjust the tracking (refer to paragraph 4.5). Before readjustment, in spect the mechanical tuning drive to find the cause of the tracking error. For correct mechanical adjustments refer to paragraph 4.6.
4.4.2 MODULATOR. Table 4 lists the correct voltages for the modulator circuit. To make these measurements, a voltmeter with a "floating" cabinet and at least 20,000 ohms -per-volt sensitivity, an oscillo scope, and a pulse generator (General Radio Type 1217- B) are needed.
If the measured voltages agree with those listed in Table 3, but the beam current is not between 15 and 30 rna for cw operation, replace the reflex klystron and readjust the tracking (refer to paragraph 4.5).
NOTE. Use great caution whenmaking the following measurements , since all voltages are far removed from ground potential. To simplify the measurements, turn the main frequency dial to 1. 7 Gc. At this point, the highest voltage in the instrument at M- is approximately 600 volts from ground and most oscilloscope probes can be used without an external capacitor. A 1000-volt capacitor will give adequate protection regardless of frequency-dial setting.
TABLE 4
8
Tubes and Diodes Adjustments Involved
Measurement
Voltage
Power Supply
240 to 260 volts between M+ (positive) and M- with 115 (or 230) -volt power line.
D306, D307, D308, D309
None
1-kc Oscillator
Sine wave (slightly distorted) of at least 12 volts rms at terminal P.
pins 1, 2, and 3 of V202
None
Schmitt Trigger
35 volts peak-to-peak with V201, V202 115 (or 230)-volt power line at terminal A. Pulse rise time should be less than 0.3 flSec; jitter, less than 0.1 flSec,
R210, amplitude R201, s ymmetry C201, overshoot
Sawtooth Generator
Negative trigger pulse should be greater than 50 volts peak-to-peak for 1 -kc sweep and 100 volts peak -to -peak for linefrequency sweep at the INT. SWEEP TRIGGER OUT binding post on the panel. Amplitude of sawtooth should be greater than 15 volts peak -to -peak at terminal X.
None
V203, V204, pins 6, 7, and 8 of V202, D200
SERVICE AND MAINTENANCE
4.5 TRACKING ADJUSTMENT. 4.5.1 GENERAL. As mentioned in Section 3.1, the two frequency-determining elements of the oscillator, the tuned cavity and the repeller voltage, must maintain a fixed relation to each other over the entire frequency range. The procedure of establishing this relation is referred to as "tracking". The procedure outlined in this paragraph assumes that the me chanical alignment between the tuning plunger, snap-action switches, and the dial is correct (refer to Section 4.6), and gives the rules for adjustment of the repeller electrode voltage using the tracking potentiometers located in the left-hand front section of the instrument. Tracking adjustment may be required when the klystron tube is replaced or for maximum performance when the instrument is operated at extreme temperatures. WARNING Use an insulated screwdriver for the following adjustments. 4.5.2 CW, SWEEP, AND EXT FM OPERATION. For this adjustment, operate the oscillator with internal or external sweep. Watch the OUTPUT MONITOR meter and avoid overloading the klystron (refer to paragraph 3.3). Adjust the following controls to obtaina smooth, dome-shaped curve on an oscilloscope over the entire frequency range: Rll1 High end of the 1.7 to 2.8-Gc range R101 Low end of the 1.7 to 2.8-Gc range R108 High end of the 2.6 to 4.1-Gc range R104 Low end of the 2.6 to 4.1-Gc range Successive adjustments may be required. 4.5.3 PULSE-MODULATED OPERATION. For this adjustment, modulate the oscillator with an external pulse. Watch the OUTPUT dial and be careful not to overload the klystron. Adjust the following controls for an output pulse of high output and good quality: Rll1 High end of the 1.7 to 2.8-Gc range R100 Low end of the 1. 7 to 2.8-Gc range R108 High end of the 2.6 to 4.1-Gc range R104 Low end of the 2.6 to 4.1-Gc range If the setting of R111, R108, or R104 is changed, recheck the cw operation (refer to paragraph 4. 5.2). 4.5.4 SQUARE-WAVE OPERATION. To make this adjustment, operate the oscillator with internal 1-kc square-wave modulation or external square-wave modulation. External modulation is recommended to facilitate oscilloscope triggering. To keep track of polarity during the adjustment, offset the symmetry of the applied square wave. The modulator reverses
the square wave so that an applied pulse length, t, will appear as a pulse length t) of the rf output pulse. p Starting at the high end of each frequency range, adjust the following controls to obtain an output with a reasonable compromise between maximum output level and modulation quality over the entire frequency range: RllO High end of the 1. 7 to 2.8 -Gc range R102 Low end of the 1.7 to 2.8-Gc range R109 High end of the 2.6 to 4.1-Gc range R103 Low end of the 2.6 to 4.1-Gc range Successive adjustments may be required.
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PARTS LIST RESISTORS (Continued)
RESISTORS
14
RlOO RlOl Rl02 Rl03 Rl04 Rl05 Rl06 Rl07 Rl08 Rl09 RllO Rlll Rl12 Rll3 Rll4 Rll5 R200 R201 R202 R203 R204 R205 R206 R207 R208 R209 R210 R2ll R212 R213 R214 R215 R216 R217 R218 R219 R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R230 R231 R232 R233 R300 R301 R302 R303 R304 R305 R306 R400 R40l R402 R403 R404 R405 R406 R407 R408 R409 R410 R4ll R412 R413 R414 R415 R531 R532
50k 50k 50k lOOk lOOk 10M 25k 50k 500k 500k 250k lOOk 15 100 25k
±10% ±10% ±10% ±10% ±10% ± 5% ±10% ±10% ±10% ±10% ±10% ±10% ±·5%
510k 500k 220k 68k 390k 2k 180k 2k 2.4k 1k 2.5k 1M 9lk 100 38.3k 38.3k 34.8k 25k 470 36k 21.5k 3.3M lOOk lOk 8.2k 750k l.lM 20k lOk 3.3M 1M lOk 470k
± 5% ±20% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ±10% ±10% ± 5% ± 5% ± 5% ± 1% ± 1% ± 1% ±10% ± 5% ± 5% ± 1% ± 5% ± 5% ±10% ± 5% ± 5% ± 5% ± 5% ±10% ± 5% ± 5% ±10% ± 5%
33 1 1.8 1.8 620 620 270 2M 330k 1M 1M 430k 47k 4.3M 120 120 270k lk 1M 2.7M 68k 3.9M l.8k lk lk
± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 507 ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ±10% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5%
1/2 w
1/2 w 1/10 w
±10% 1/2 w 1/2 w 1/2 w 1/2 w 5w 1/2 w lOw 2w 1w 1/2 1/2 1/2 1/8 1/8 1/8
w w w w w
1/2 w lw 1/8 w 1/2 w 1/2 w lw lw 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w lw 1/2 w 5w 10 w 10 w 10 w 5w 5w 3w 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 2w 1/2 w 1/2 w 1/2 w lw 1/2 w 1/2 w 2w 1/2 w 1/2 w 1/2 w 1/2 w
POSC-7(503C) POSC-7(50'3C) POSC-7(503C) POSC-7(104C) POSC-7(104C) REC- 20BF(l06B) 1360-410(253C) 1360-410(503C) POSC-11(504C) POSC -11(504C) POSC -11 (254C) POSC-11(104C) REC-20BF(l50B) 1360-413 POSC- 25(253C) 977-403 REC-20BF(514B) POSC-22(504D) REC-20BF(224B) REC-20BF(683B) REC-20BF(394B) REP0-42(202B) REC - 20BF(184B) REP0-42-2(202B) REC-41BF(242B) REC -30BF(102C) POSC -11 (252C) REC- 20BF(l05B) REC-20BF(913B) REC-20BF(l01B) REF-60(3832A) REF-60(3832A) REF-60(3482A) POSC-7(253C) REC-20BF(471B) REC - 30BF(363B) REF -60(2152A) REC- 20BF(335B) REC-20BF(l04B) REC -30BF(l03C) REC -30BF(822B) REC-20BF(754B) REC-20BF(ll5B) REC-20BF(203B) POSC -7(103C) REC-20BF(335B) REC-20BF(l05B) REC-30BF(103C) REC-20BF(474B) REU-8( REP0-43(330B) REP0-44(010B) REP0-44(018B) REP0-44(018B) REP0-43(621B) REP0-43(621B) REP0-45(271B) REC-20BF(205B) REC-20BF(334B) REC-20BF(l05B) REC-20BF(l05B) REC -20BF( 434B) REC-41BF(473B) REC-20BF(435B) REC-20BF(l21B) REC-20BF(l21B) REC-30BF(274B) REC-20BF(l02B) POSC-11(105C) REC-20BF(275B) REC-41BF(683B) REC-20BF(395B) REC-20BF(l82B) REC- 20BF(l02B) REC- 20BF(l02B)
R533 R534 R535 R536 R537 R538 R539 R540 R541 R542 R543 R544 R545 R546 R547 R548 R549 R550 R551 R552 R553 R554 R555
9.1M 2.7M 120k 2.2M 287k 390k lOOk 6.2M 75k lk lOOk 9lk 47k 180k 1k 5.6k l.5M 470k lOk 33k 10M 100 100
± 5% ± 5% ± 5% ± 5% ± 1% ± 5% ± 5% ± 5% ± 1% ± 5% ± 1% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ± 5% ±10% ± 1% ± 5% ± 5% ± 5%
1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/4 w 1/2 w 1/4 w lw 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/2 w 1/4 1/2 1/2 1/2
w w w w
REC-20BF(915B) REC- 20BF(27 5B) REC-20BF(124B) REC-20BF(225B) REF-70(2873A) REC-20BF(394B) REC- 20BF(l 04B) REC- 20BF( 625B) REF-65(753A) REC- 20BF(l02B) REF-65(104A) REC-30BF(913B) REC-20BF(473B) REC-20BF(l84B) REC-20BF(l02B) REC-20BF(562B) REC-20BF(155B) REC-20BF(474B) POSW -3(103C) REF-65(333A) REC- 20BF(106B) REC-20BF(101B) REC-20BF(101B)
CAPACITORS
ClOO C10l C102 C103 Cl04 Cl05 C200 C20l C202 C203 C204 C205 C206 C207 C208 C209 C210 C2ll C212 C213 C214 C215 C300A C300B C300C C301A C301B C301C C302A C302B C302C C303A C303B C303C C304A C304B C304C C305A C305B C305C C306A C306B C306C C400 C531 C532 C533 C534 C535
1f.!f 2500 2500 2500 0.0003f.!f 50 0.047J.lf 7 to 45 O.lf.!f 0.0051f.!f 0.0051f.!f 0.005lf.!f 0.047f.!f 0.005lf.l£ 0.047f.!f 0.047f.!f 0.0001f.!f 0.0015f.!f 0.22f.!f 0.047f.!f 0.009lf.l£ 0.000562f.!f 90 30 30 90 30 30 1500 750 750 1500 750 750 50 25 25 50 25 25 50 25 25 0.22f.!f O.OOlf.!f 0.047f.!f 20f.!f O.Olf.!f O.Olf.!f
±10% GMV GMV GMV ±10% ±10% ±10% ± 1% ± 1% ± 1% ±10% ± 1% ± 5% ± 5% ±10% ±10% ± 5% ± 5%
±10% ±20% ±10% ±20% ±20%
400 dcwv
400 dcwv 200 100 100 100 400 100 1000 1000 500 100 100 400 500 300
dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv dcwv
COP- 25(105C) FIE-1(252C) FIE-1(252C) FIE-1(252C) FIE-2(500C) COW-25(473C) COT-12 COW-16(104C) COM -5F(51 2A) COM-5F(512A) COM -5F(512A) COW-25(473C) COM -5F(512A) 1360-49 1360-49 COM -22B(l01B) COM -22B(152B) COW -17(224C) COW-25(473C) COM -1D(912B) COM -22D(5620B)
300 dcwv
COE-52
300 dcwv
COE-52
15 dcwv
COE-9
15 dcwv
COE-9
450 dcwv
COE-10
450 dcwv
COE-10
450 dcwv
COE-10
600 500 400 450 500 500
dcwv dcwv dcwv dcwv dcwv dcwv
COP-25(224C) COC-61(102D) COW-25(473C) COE-5 COC-63(103D) COC-63(103D)
PARTS LIST (Continued) DIODES
0100 D200 D300, D303 D304, D306, D309 , D312, D400
MISCELLANEOUS
2REMl002/lN23B 2RED1 003/1 N34A(S) D30l, D302}
2REl002 /1 N3254
D305 D307, D308,} D310, D3ll, D313
2RE100l /lN3253
Pl P2 PLl Ml Tl
Pilot Lamp Pilot Lamp Plug Meter Transformer
2REl002/lN3254
SOL-14 SOL-14-2 CDPP-10 MEDS-94 365-404
SWITCHES
2REZl01 2/lN758A
Sl S2A S2B
SWT- 333 1360-412 1360-47
S2C S3
1360-412 SWRW-198
FUSES
F1 F2
115 v FUF-1, 2a FUF-1, 2a
I
230 v FUF-1, 1a FUF-1, 1a
TUBES
V100 V200 V201 V202 V203 V400
JACKS
J1 J2
CDSJ-10 BP- 5B
J3 J4
BP-5B BP-10, 11/16
5836 6197 6197 12AT7 12AT7 12BH7A
V401 V531 V532 V533 V534
12AX7 6AV56A 6AN8 5965 5651
NOTES All resistances are in ohms, unless otherwise indicated by k (kilohms) or AI (megohms). All capacitances are in picofarads, unless otherwise indicated by J.Lf (microfarads). Type designations for resistors and capacitors are as follows: COG • Capacitor, COE • Capacitor, COAl • Capacitor, COP • Capacitor, COT - Capacitor, COW • Capacitor, F IE • Filt er
ceramic e lectrolytic mica plastic trimmer wax
POSC ~ Potentiometer, composition POSW • Potentiometer, wire-wound REC • Resistor, composition REF· Resistor, film REPO • R esistor, power
Figure 11. Beam-voltage regulator etched board.
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TYPE 874 COAXIAL COMPONENTS TYPE 874- CONNECTORS
OTHER COAXIAL ELEMENTS
CABLE TYPE 874-A3 RG-29/U RG-8/U RG-55/U RG-58/U RG-58A/U -C58 -C8
CONNECTOR TYPE
874A2
CABLE
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CABLE LOCKING
-CL
-CL58
PANEL
-P
PANEL, FLANGED
RG-59/U RG-9/U RG-116/U RG-116/U -C9
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-CL8
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-P8
-P8
-P62
-PB
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-PB8
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PANEL, LOCKING
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-PL8
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PANEL, LOCKING RECESSED
-PRL
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Example: For a locking cable connector for RG-8/U, order Type 874-CL8 .
TYPE 874- ADAPTORS TO TYPE
874-
TO TYPE
BNC
QBJA QBJL* QBPA
TNC
QCJA QCJL* QCP
UHF
plug jack
c
plug jack
\
plug jack
UHF Air Line
plug
874QTNJ QTNJL* QTNP
jack
QUJ QUJL* QUP
7/8 -in. 1-5/8 -in. 3-1/8 -in.
QUIA QU2 QU3A
HN
plug jack
QHJA QHPA
LC
plug
QLJA QLPA
LT
plug jack
QLTJ QLTP
*Locking Type 874 Connector,
N
plug
QNJA QNJL* QNP
Example: To connect Type 874 to a·Type N jack, order Type 874-QNP.
jack
sc
plug jack
QSCJ QSCJL* QSCP
Type 874A2 A3 D20, DSO EL Fl85 FSOO FlOOO F2000 F4000 G3, G6 G10, G20 GA JR K L10, L20, L30 LA LK10,LK20 LR LT M MB MR T UB 1/C VI VQ VR WlOO W200 WM WN, WN3 WO, W03 X y
50 Q cable (low loss) 50 Q cable 20-, 50-cm adjustable stubs 90° ell 185-Mc low-pass filter 500-Mc low-pass filter 1000-Mc low-pass filter 2000-Mc low-pass filter 4000-Mc low-pass filter { 3-, 6-, 10-, 8 20-db attenuators adjustable attenuator rotary joint coupling capacitor
{ 10-,20-,8 30-cm rigid air lines 33- 58 em adjustable line constant-Z adjustable lines radiating line trombone constaht-Z line component mount coupling probe mixer -rectifier tee balun variable capacitor voltmeter indicator• voltmeter detector voltmeter rectifier 100-Q termination 200-Q termination 50-Q termination short-circuit terminations open -circuit terminations insertion unit cliplock z stand The above is a partial listing. For complete details, refer to the General Radio catalog.
GENERAL WEST
EMerson
CONCORD,
MASSACHUSETTS
9-4400
DISTRICT NEW
RADIO COMPANY
OFFICES
Mission
REPAIR EAST
YORK
Broad Ave. at Linden, Ridgefield, N. J. Telephone N.Y. WOrth 4-2722 N.J. WHitney 3-3140
SYRACUSE Pickard Bldg. East Molloy Rd., Syracuse 11, N.Y. Telephone GLenview 4-9323
PHILADELPHIA 1150 York Rd., Abington, Penna. Telephone TUrner 7-8486 Phila.,HAncock 4-7419
6-7400
SERVICES
COAST
General Radio Company Service Department 22 Baker Ave., W. Concord, Mass. Telephone EMerson 9-4400
NEW
YORK
General Radio Company Service Department Broad Ave. at Linden, Ridgefield, N.J. Telephone N .Y. WOrth 4-2722 N.J. WHitney 3-3140
WASHINGTON 8055 13th St., Silver Spring, Md. Telephone JUniper 5-1088
FLORIDA 113 East Colonial Drive, Orlando, Fla. Telephone GArden 5-4671
CHICAGO 6605 West North Ave., Oak Park, Ill. Telephone VIllage 8-9400
LOS
ANGELES
1000 N. Seward St., Los Angeles 38, Calif. Telephone HOllywood 9-6201
SAN
MIDWEST General Radio Company Service Department 6605 West North Ave., Oak Park, Ill. Telephone VIllage 8-9400
WEST
COAST
General Radio Company Service Department 1000 N. Seward St. Los Angeles 38, Calif. Telephone HOllywood 9-6201
FRANCISCO
1186 Los Altos Ave., Los Altos, Calif. Telephone WHitecliff 8-8233
CANADA 99 Floral Pkwy., Toronto 15, Ont. Telephone CHerry 6-2171
CANADA General Radio Company Service Department 99 Floral Pkwy., Toronto 15, Ont. Telephone CHerry 6-2171
General Radio Company (Overseas), Zurich, Switzerland Representatives in Principal Overseas Countries Prin ted in USA
