RCA-Victor-Co-Inc-RADIOLA-III-A 电路原理图.pdf

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1、PAGE 4-A RADIOLAS III, III -A AND BALANCED AMPLIFIER Antenna I 0-I 20-1 3o-4 LinkOHIN Antenna Binding Posts -There are two types of circuit avail- able.One is a straight single tuning circuit noted for its sensi- tivity and ease of operation.The other is a type of coupled circuit affording more sele

2、ctivity.Either may be had at will by con- necting the antenna to the proper binding post and putting the link in the proper position.Fig. 3 shows the suggested combina- tions which have the following properties. No. 1-Antenna on 4, link open.This is a single circuit con- nection which on an average

3、antenna will cover the approximate wavelength range of 200 to 360 meters corresponding to a frequency range of 1500 to 830 kilocycles. No. 2-Antenna on 3, link open.This is a single circuit con- nection which on an average antenna will cover the approximate wavelength range of 250 to 480 meters corr

4、esponding to a frequency range of 1200 to 625 kilocycles. No. 3-Antenna on 2 and 3, link open.This is a single circuit connection which on an average antenna will cover the approximate wavelength range of 315 to 560 meters corresponding to a frequency range of 950 to 535 kilocycles. No. 4-Antenna on

5、 2 and 3, link on 4.This is a closed single circuit which on a very small antenna, such as an indoor one, will cover the approximate wavelength range of 290 to 575 meters corresponding to a frequency range of 1070 to 520 kilocycles. No. 5-Antenna on 1, link on 4.This is a selective single circuit co

6、nnection which on an average antenna will cover the approximate wavelength range of 195 to 375 meters corresponding to a frequency range of 1540 to 800 kilocycles. No. 6-Antenna on 1, link on 3.This is a selective single circuit connection which on an average antenna will cover the approximate wavel

7、ength range of 310 to 640 meters corresponding to a frequency range of 970 to 470 kilocycles. -c BLACK WITH GREEN TRACER -A +C GREEN WITH YELLOW TRACER rs GROUND +205+405 MAROONRED -Battery Connections pY T Yellow with Red and BlueMaroon (!) Tracers A -BGnd. + 20B l -r11111111,-111 Black with Green

8、Tracer -C -Diagram of Connections Short Wave Single Circuit Long Wave for very Small Antenna Medium Wave Single Circuit For any Antenna 5 Short Wave Selective Circuit 0 Phones 0 Green with Yellow Tracer (!) 3 Long Wave Single Circuit 6 2 (*). 4 Long Wave Selective Circuit For any Antenna -Showing An

9、tenna Connections to Different Binding Poets RADIOLA BALANCED -AMPLIFIER Red O +4013 RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN Antenna 30-1I Link -111 40-I PAGE 5-A RADIOLASIII, BEA& BALANCED-AMPLIFIER RADIOLARADIOLA-LII BALANCED -AMPLIFIER T

10、 Yellow with Red and Blue Tracers +A -B Gnd. Maroon 1 + 20B RADIOLAIII -A IUX-I99RADIOTRON 3UX- 170RADIOTRONS Stage 2 Black withGreenwith Green TracerYellow Tracer -C-A+C Diagram of Connaction 222 VOLTS 27i VOLT PLATE OR EV BATTERY USED AS C. BATTERY BATTERYCABLE - 6VOLT DRY CELLS IN SERIES - PARALL

11、EL TO GIVE 4i VOLTS FLCABLAMPCORD 6 OHM .7 RHEOSTAT Radiola III -A Output Red O +80B 3UX -120 RADIOTRONS 1UX-199 (RADIOTRON /I /k a RADIOLA III -A 3 EXTRA LARGE HEAVY DUTY IV BATTERIES GROUND RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN