RCA-Victor-Co-Inc-211K 电路原理图.pdf

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1、PAGE 779-C FREQUENCY RANGES Broadcast A Medium Wave B SPREAD BAND Short Wave C 11.745.4 me MODEL 211K Chassis No. RC -571 Eleven -Tube, Four -Band, AC, Superheterodyne Electrical and Mechanical Specifications 540-1,600 kc 2.3-6.3 mc 9.35-9.75 mc INTERMEDIATE FREQUENCY 455 kc PUSH-BUTTON RANGES One s

2、tation between approximately 540-1,030 Two stations between approximately 610-1,250 Two stations between approximately 740-1,430 One station between approximately 880-1,600 TUBE COMPLEMENT kc kc kc kc (1) RCA-6SK7 R -F Amplifier (2) RCA-6SA7 1st Detector -Oscillator (3) RCA-6SK7 I -F Amplifie (4) RC

3、A-6SQ7 2nd Detector, A.V.0 (5) RCA-6SQ7 Audio (6) RCA-6SQ7 Phase Inverter RCA-6K6GT (Four) Power Output (11) RCA -5U4 -G Rectifier RADIO ALL HIGHS.LEAST LOWS HI If rIV AESOPING SMUTS POSITION FULL TONE -ALL HIGHS AND ALL LOWS 5f 0HEPL o59T17:3 ALL LOWS MODERATE si:iiSIO-II Itecxcc ALL LOWS, LEAST HI

4、GHS Nlcx vNcxc lwre Nc HEAD PHONES 2000 OR 3000 A. TO AUDIO CHANNEL OF CHANALYST OR AUDIO AMPL IrI ER Phase Checker, using Headphones. PKONO.,TELEV., F. DE ALL LOWS, LEAST HIGHS TONESi3 AGOPIDSUPIEG PID x14x-rITt NLO TONES ALL LOWS, MODERATE HIGHS MACS *opus W NION-FTONSO TOPICS FULL TONE -ALL HIGH

5、AND ALL LOWS Sei lauaTS Mint. T Gx4L 1Ti0N All HIGHS,LEAST LOWS INNINuc MSS aSONII2 POWER OUTPUT RATING Undistorted 10 watts Maximum 12 watts LOUDSPEAKER (RL -70L-4) Type 12 -inch Electrodynamic V.C. Impedance 2.2 ohms at 400 cycles LOUDSPEAKER (RL -81B-6 ) Type 5 -inch Permanent Magnet V.C. Impedan

6、ce 3 ohms at 400 cycles POWER SUPPLY RATINGS 105-125 volts, 50-60 cycles 140 watts 105-125 volts, 25-60 cycles 140 watts Height Width Depth Cabinet Dimensions. 40 in. 28 in. 15 in. Weight (Net, 64 lbs.), (Shipping, 83 lbs.) Tuning Drive Ratio 15 to 1 i DIAL P115H OUT TONS 1 N.a a NW) -. POWER -VOLUM

7、E RADIO -PHONO TUNING CONTROL TONE CONTROL, CONTROL Phasing Speakers For correct tone, it is ESSENTIAL (hat the two speakers operate in phase, so that the two cones move in and out together. It is necessary to check the phasing whenever a new speaker, col field coil, or output transformer is install

8、ed, or whenever the speaker connections are altered in any way. The recommended procedure is as follows: 1. Hook up a phase checker, using headphones or PM speaker units as shown. Connect the checker to an audio amplifier that has an output meter. (The audio channel in the Chanalyst is excellent for

9、 this purpose.) 2. Feed a 400 -cycle modulated signal into the receiver. Turn volume up to medium. Hold both units of the checker in front of the large speaker in set. Throw the toggle switch to each position and note which position gives maximum output on meter. Mark this position of the switch in

10、phase. Mark the other position out of phase. 3. Place one unit of the phase checker in front of each speaker in the set. Throw the toggle switch to each position and leave it at the position that gives greatest output on the meter. Note the switch marking for this position. If it says in phase, the

11、set speakers are correctly phased. If it says out of phase, reverse the leads to the voice -coil terminals of the small speaker in the receiver. Speaker Wiring Diagram. TOCSO L A7 -C TUBE PLATES TO C49 g .N or .L10 rrrrrt9Vsit-D Y ,Om.D10,0,0,01 IxN z -mlpimm4= 3ji Nm1mmQ I I I I I I I g O U O cl ZI

12、i an h. e u gor JZ In PAGF. 7 81-C 211K 收音机爱 好者资料库 RadioFans.CN PAGE 782-C 211K Push Button Adjustment The station push buttons connect to separate magnetite -core oscil- lator coils and separate antenna trimmers which must be adjusted for the desired stations. Use an insulated screwdriver or alignm

13、ent tool such as RCA Stock No. 31031. Allow at least five minutes warm- up period before making adjustments. In the event that the receiver is to be used with an external an- tenna use one or two feet of wire (as an antenna) to ensure sharp peaking during the final adjustment procedure. For loop ope

14、ration, the link should be strapped across terminals on back of set. In either case the procedure is as follows: 1. Make a list of the desired stations, arranged in order from low to high frequencies. 2. Turn the range selector to A band, and manually tune in the first station on the list. 3. Turn r

15、ange selector to PB position, push in station button No. 1 (extreme left). Then adjust the No. 1 oscillator core to receive the station. 4. After oscillator core is set correctly, adjust No. 1 antenna trim- mer for T.ximum output. 580 TOI 1600 KC1 TRIMMER SCREWe S CORE 6 i - 1 140 TO 1430 I 610 TO 1

16、560 KC 1 KC I 0 I 5 4 I 3 2 140 TO 1030 KC 0 ROOS i 0 1 0 0 w Clockwise adjustment of cores and trimmers tunes the circuits to lower frequencies. 5. Adjust for each of the remaining stations in the same manner. 6. Make a final careful adjustment of the oscillator cores and an- tenna tritmers. On the

17、 880 to 1.600 kc push-button, the higher frequency stations may be received with No. 1 oscillator core either in or out (oscillator frequency either 455 kc below or 455 kc above the station frequency). The adjustment with this core in its out position (oscillator frequency 455 kc above the station f

18、requency) is the correct one. Replacement Parts Insist on genuine factory -tasted parts, which are readily Identified and may be purchased from authorized dealers. STOCK N o. DESCRIPTION STOCK No. DESCRIPTION CHASSIS ASSEMBLIES 35595 Resistor -15,000 ohms, 3 watt (RC -571) 30409 Resistor -27,000 ohm

19、s, * watt 30650 Resistor -56,000 ohms, * watt 35966 Board-Antenna-Ground board 14583 Resistor -220,000 ohms, watt 36045 Capacitor-Electrolytic comprising 1 section of 30651 Resistor -270,000 ohms, 3 watt 30 mfd., 450 volts, 1 section of 15 mfd., 450 13479 Resistor -390,000 ohms, watt volts, 1 sectio

20、n of 10 mfd., 450 volts, and 1 30649 Resistor -2.2 meg., i watt section of 20 mfd., 25 volts 38589 Shalt-Tuning knob shalt 38588 Capacitor-Adjustable-25-200 mmfd. for C 31364 Socket-Dial lamp socket band antenna coil 35787 Socket-Phono input socket 36051 Capacitor-Air trimmer 31251 Socket-Tube socke

21、t 38591 Capacitor-Mica trinimer comprising 1 section 31418 Spring-Drive cord spring of 3-30 mmfd. and 1 section of 8-80 mmfd. 12007 Spring-Retaining spring for oscillator coil core 38586 Capacitor-Mica trimmer comprising 1 section of and stud 3-30 mmfd., 1 section of S-80 mmfd., and 1 section of 25-

22、250 mmfd. 38574 Support-L.H. pulley support complete with pul - leys 38587 Capacitor-Mica trimmer -8-80 mmfd 39148 Support-R.H. pulley support complete with pul - 36169 Capacitor-Mica trimmer comprising 2 sections leys of 8-80 mmfd. 38575 Switch-P.B. selector switch 36424 Capacitor-Mica trimmer comp

23、rising 1 section of 38590 Switch-Range switch 10-160 mmfd., 2 sections of 25-250 mmfd., 2 38576 Switch-Tone switch sections of 50-400 mmfd., and 1 section of 35636 Transformer-First I.F. transformer 100-540 mmfd. 35790 Transformer-Second I.F. transformer 13001 Capacitor -8.2 mmfd. 38585 Transformer-

24、Output transformer 38868 Capacitor -33 mmfd. 36184 Transformer-Power transformer -105-120 volts, 38887 Capacitor -43 mmfd. 25 cycle 13057 Capacitor -68 mmfd., moulded 36044 Transformer-Power transformer -105-120 volts, 38866 Capacitor -68 mmfd., silvered mica 50/60 cycle 12720 Capacitor -100 mmfd.,

25、moulded 35969 Washer-C washer for tuning knob shaft. 34699 Capacitor -100 mmfd., unmoulded 38865 34700 12725 Capacitor -100 mmfd., silvered mica Capacitor -120 mmfd. Capacitor -150 mmfd., moulded SPEAKER ASSEMBLIES E.M.) RL -70-L4) 38864 13003 12694 38831 30882 34506 34459 33584 Capacitor -150 mmfd.

26、, silvered mica Capacitor -180 mmfd. Capacitor -220 mmfd. Capacitor -630 mmfd. Capacitor -2200 mmfd. Capacitor-.0016 mfd. Capacitor-.0025 mfd. Capacitor-.005 mfd. 13867 36143 11469 36145 11953 36146 36144 Cap-Dust cap Coil-Field coil -550 ohms Coil-Neutralizing coil Cone-Cone complete with voice coi

27、l Plug -4 -prong male plug for speaker Suspension-Metal cone suspension Transformer-Output transformer 4937 Capacitor-.01 mfd. 11315 Capacitor-.015 mfd. SPEAKER ASSEMBLIES (P.M.) 37706 Capacitor-.025 mfd. (RL -S1 -B6) 32787 Capacitor-.05 mfd. 14626 Capacitor-.07 mfd. 35849 Cap-bust cap 31581 Cell-Bi

28、as cell 38683 Cone-Cone complete with voice coil 38367 Coil-Antenna coil-C band 5118 Plug -3 -prong male plug for speaker 38358 Coil-Oscillator coil 38315 37638 Coil-P.B. oscillator coil-high frequency Coil-P.B. oscillator coil-low frequency MISCELLANEOUS ASSEMBLIES 38366 Coil-R.F. coil 38375 Button

29、 -Push button 38364 Condenser-Variable tuning condenser 38684 Capacitor -Mica trimmer -2-20 mmfd 38404 34662 Control-Volume control and power switch. Cord-Drive cord (approx. 76 -in. overall length) 38584 38579 Channel-Rubber channel to hold dial Coil-Loop primary coil 35788 Core-Adjustable core and

30、 stud for oscillator coil 38749 Decalcomania-Control panel decal 35871 Core-Adjustable core and stud for P.B. oscil- 38592 Dial-Glass dial scale lator coils 38582 Escutcheon-Dial scale escutcheon 38359 Cup-Mounting cup and bushing for oscillator 38709 Indicator-Station selector indicator coil 35814

31、Knob-Control knob 38361 Drum-Condenser drive drum 11891 Lamp-Dial lamp 31580 Holder-Bias cell holder 38578 Loop-Antenna loop complete 5119 Plug -3 -contact female plug for speaker cable. 34317 Marker-Station marker 5040 Plug -4 -contact female plug for speaker cable. 33774 Mounting-Speaker mounting

32、hardware for 12 -in. 38832 Plug-Pin plug for antenna loop leads speaker 31373 Pulley-Drive cord pulley 38580 Pivot-Loop pivot located on top of loop frame. 34765 Resistor -100 ohms, watt 38707 Plate-Dial plate complete-less indicator pointer 36096 Resistor -250 ohms, 2 watt 36422 Socket-Loop cable s

33、ocket located on loop 14720 Resistor -1000 ohms, watt 34053 Spring-Push button retaining spring 34767 Resistor -2200 ohms, watt 30900 Spring-Retaining spring for knob 30694 Resistor -3900 ohms, watt 38581 Swivel-Loop support and swivel located on bot - 36714 Resistor -15,000 ohms, 4 watt tom of loop frame