BC-312N_BC-312NX_BC-314G_BC-342N_BC-344D_serv_user_TM11-850N_1943.pdf

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1、 J - . r i 1 TECHNICAL MANUAL No. I l-850 N RESTRICTED WAR D,EPARTMENT Washington, Februar1 4, 1943 r BC-312-N .BC-3Iz-NX BC-342-N BC- 3t4-G BC-344-D a. RADIO RADIO RADIO RADIO RADIO RECEIVER RECEIVER RECEIVER RECEIVER RECEIVER SECTION I SECTION II SECTION III SECTION IV TABLE DESCRIPTION OF CONTENT

2、S Frequency Coverage. V/eight, Size, Source of Power and Input Wattage EMPLOYMENT Unpacking . Installation. . PREPARATION FOR USE Precautionary Measures Pilot Lamps. Vacuum Tubes. Line Voltage Compensation. Fuses. Operation. Operatirrg Pru.rrrriorr,.,. MAINTENANCE (Continued) t Paragraph .4 2 3 4 5

3、6 7 8 9 1 0 1 1 t 2 T3 t4 t5 r6 r7 18 t9 20 ,bi r lta. - -I SECTION V TABLE OF CONTENTS (Continued) Paragraph SUPPLEMENTARY DATA Tables of Voltages. 2l Chart of Minimum Performance. 22 Chart of Normal Performanc. 2j Tabular List of Replaceable Parts for Radio Receiver BC-312-N. 24 Tabular List of Re

4、placeable Parts for Radio Receiver BC-312-NX . 25 Tabular List of Replaceable Parts for Radio Receiver BC-342-N. 26 Tabular List of Replaceable Parts for Radio Receiver BC-3 l4-G 27 Tabular List of Replaceable Parts for Radio Receiver BC-344-D. 28 Index of Manufacturers. 2, t-tt .# .* , ._: tirr-, T

5、M r i1.,. r:* Figure No. I 3 4 5 6 7 8 9 10 1 1 T 2 LIST OF ILLUSTRATIONS Radio Receiver BC-3 12-N, Front View Radio Receiver BC-312-NX, Front View Radio Receiver BC-342-N, Front View Radio Receiver BC-3 l4-G, Front View. Radio Receiver BC-344-D, Front View Radio Receiver BC-312-N, Circuit Diagram .

6、 ., Radio Receiver BC-3 l2-NX, Circuit Diagram Radio Receiver BC-342-N, Circuit Diagram Radio Receiver BC-3 L4-G, Circuit Diagram Radio Receiver BC-344-D, Circuit Diagram Radio Receivers BC-312-N, BC-31z-NX and BC-342-N, Wiring Diagram .28 Radio Reccivers BC-3 14-G and BC- 344-D, Wiring Diagram .2g

7、.,i. ,i:i, ,tJ DESTRUCTION OF ABANDONED MATERIEL IN THE COMBAT ZONE In case it should become necessary to prevent the capture of this equip- ment, and when ordered to do so, DESTROY IT SO THAT NO PART OF IT CAN BE SALVAGED, RECOGNIZED, OR USED BY THE ENEMY, BURN ALL PAPERS AND BOOKS. ilIEANS:- 1. Ex

8、plosives, when provided. 2. Hannmers, axes, sledges, or whateyer heavy object are readily available. 3. Burni4g by means of incendiaries such as gasoline, oil, paper or wood. . 4. Grenades and shots from available arms. i PROCEDURE:- 1. Obliterate all identifying marks. Destroy nameplates and circui

9、t labels. 2. Demolish all panels, castings, switch and instrument-boards. 3. Destroy all controls, switches, relays, connecting means and meters. 4. Rip out. aII wiring in electrieal equipment. Smash S 2 installed, I sPare 2 Lamps LM-27 I Mounting FT-162 (2) 24-28 uolts d-c- RADIO RECEIVER BC- 12-NX

10、 I Dynamotor DM-z1-CX 3 Fuses FU-25-A; 2 installed, I sPare 2 Lamps LM-42 I Mounting FT- 162 (3) I l0-120 ctolts o-c- RADIO RECEIVER BC-342-N j Fuses FU-21-A; 2 installed, I spare 2 Lamps LM-27 I Mounting FT-162 I Rectifier RA-20 b. 150 to 1500 Kc in 4 bqnds- ( I ) I2- I4 oolts d-c- RADIO RECEIVER B

11、C-314-G I Dynomotor DM -21-B 3 Fuses FU -21-A; 2 installed, I spare 2 Lamps LM-27 I Mounting FT- 162 (2) ll0-120 oolrs a-c- RADIO RECEIVER BC-3 44-D 3 Fuses FU-21-A; 2 installed, 2 Lamps LM-27 I Mounting FT- 162 1 Rectifier RA-20 I spare c. Accessorg Equipment- The following items, not included as p

12、arts of the receivers, will be required to operate them: RADIO RECEIVER BC-3 12-N I Power Cord with Plug PL- I 14 * I Headset HS-30- (*) and Cord CD-604 or CD-605 .2 Tubes VT-65 I Tube VT-66 4 Tubes VT-86 1 Tube VT-87 I Tube VT-88 Antenna Source of Power (12 to 14 volts d-c) f,?: - f. fi r,., , f i

13、. .,i: TM ;. !,. 11-850 N 2-3 RADIO RECEIVER BC-3 I2-NX *If Headset HS-30- (t) and associared cords are) not available, Headsed P- l9 may be used. (*) The asterisk within parentheses denotes the applicable issue letter. 3. Frequeney Coverage: a. Radio Receivers BC-3 l2-N, BC-3 12-NX and BC-342-N are

14、 designed for reception over the continuous frequency range of 1500 to 18,000 kilocycles in six bands as follows: I Power Cord with *1 Headset HS:30-(*) or CD-605 2 Tubes VT-65 4 Tubes VT-86 1 Tube VT-87 1 Tube VT-88 1 Tube VT-134 Antenna Source of Power (24 Plug PL-IL4 and Gord CD-604 to to to to 1

15、 x l 2 I 4 to 28 volts d-c) RADIO RECEIVER BC-342.N Cord CD-370, or equivalent (a-c rnput) Headset HS-30- (n) and Cord CD-604 or CD-605 Tubes VT-65 Tube VT-66 Tubes VT-86 Tube VT-87 Tube VT-88 Tube VT-97 Antenna Source of Power (110 to 120 volts a-c) RADIO RECEIVER BC-J I4-G 1 Power Cord with Piug P

16、L-II4 I Headset HS-3 0- ( * ) and Cord CD-604, or CD-605 2 Tubes VT-65 I Tube Vf-66 4 Tubes VT-86 I Trrbe Vf-87 1 Tub.e VT-88 Antenna Source of Power (I2 to 14 volts d-c) RADIO RECEIVER BC-3 44-D 1 Cord CD-370, or equivalent (a-c input) t N -rl -t - l o bl 15 l l 1 6 l t l z ) | r Z l t o I t t t o

17、r I l l l r c J ; O i l : c t l t 6 l L 6 ill rulr 23 F;ttrYilqf q*f:sF ;rff u t- ii .J r, ,. ;-t1.,1; i . l,: TM 11850 N *. 2l o z U o t o t F E x 2 I o a o 065 o:l ztf ooo is9 u : g u 4. o 6 a, g a,-.tEfa 1 , , : 3 r i d : *;r1l: 3 ii:Hil: $ o r g r t z Fts 3? F F 9 g . 9 f FtcuRp 7, RRoro REcprvr

18、R BC-31Z-NX, crncurr DrncRana. a a d 9 z o z l I= z F ? I I i a il:e b t t o l l r F i l t a t t . u t t t z l l l z l r o l l t 3 t . . l l o l l l l o t? rq i l l r d l l ) 6 6t f Fl o J . o 5: o 4 Z L g : 6 to IF T H lq =F l I rtll, r l l h *l l t l it1 l, I t c Ni-+, 24 TM 11-850 N ,2L o- ! 9 e

19、o I ? o N - l O 9_9 p rtr I () c o o 2 O ; o X c - $ F| 13 n t , t Rnoro RncptvpR # i J z tr z z o o l 6 I a 2 I t o o s5; BC-342-N, Crncurr DrncRau. z5 . .:. j-.l.; -. -:.5 F .-,sl. e H 4 Z 7 Z ze+ I tD I Frcune 10, Raoro REcEIVER BC-344-D, Ctnculr Dtncnanl. ril TM 11-850 N 2L :. t l t: li H ; I I

20、s- ) F a i -t I I I r T I -+ t I I I I r i l _l iliiil ! i r l a ; i : I T FlcuRp 11, RRnro REcErvEns BC-312:N, BC-312-NX AND BC-342-N, WrRlNc DncRarvr. : . t, TM 11-850 N ,1 A L FlcuRE 12, Raoto RECETvERS BC-3 I4-G AND BC-344-D, WlRrNc DrRcnnna. 22. Chart of Minimum Performance: a. Minimum Perf orm

21、snce Charqcteristics f o,r Radio Receiuers BC-3 I2-N , BC-3 1Z-NX snd Band _F.q. Calib. Noise MW Overlap Kc Sensitivity pv Kc Dev. + 1 5 Output t 2 2 I 30 AVC.MVC 7.5 6.0 6.0 6.0 5.0 4.2 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 5.0 BC-342-N. Ima,.ge Ratio 180 M 20 7.5 50 20 /.) 20 7.5 2.5 5.0 . 2

22、.5 1.5 1.8 .75 .47 5 pv MVC 1 0 7 6 Kc I 500 lli-Lo end r455 r492 3015 3 060 29t0 2985 5025 5 100 4850 497 5 8040 8160 77 60 7960 rr055 1 t220 r067 0 10945 1407 0 14282 1 3 5 8 0 13930 I 8090 1 8360 A A A 2200 15 3000 15 B 3000 B 4000 B 5000 C C C D D D E E E 5 000 65 00 8000 8000 9500 I 1000 I 1000

23、 r2500 I 4000 F 14000 F 16000 F 1 8000 Selectivity MVC 2000 kc 10 x-ll to 20 kc 1 5 1 2 T 5 1 7 t5 22 t 5 1 2 r9.5 t9 24 26 24 10 28.5 l 0 33 10 33 10 37 .5 l0 42 10 . 1 0 1 0 r0 42 48 54 .47 5 ,35 . t 9 I-f Rejection Frequency kc I-f Ratio Crystal Selectivity MVC (BC-342-N only) Width 10 x-1400 cyc

24、les Crystal Sensitivity (BC-342-N only) Frequency kc I 500 2200 3000 C-w Sensitivity pv ,Frequeney kc MVC AVC 1500 3 3l 500250 M 30 :-l:i.,:-i . r j TM 11-850 N 22 b. Band Minimum Freq. Kc 150 200 260 260 360 450 450 600 820 820 1 20C 1500 Performs.nce Chmacteristics for Rqdio Rrceiuers BC-314-G snd

25、 BC-344-D. Calib. Noise MW Overlap Kc Sensitivity pv Ima,ge Selectivity Kc Dev. Output Hi-Lo end AVC-MVC C-W Ratio 10 x Limit -i- l0 10 r0 1 0 10 1 0 10 1 0 1 0 .10 I-f Rejection Frequency kc 1 5 0 60 44 Ratio Limit 100 M 4.8 C-w Spurious Frequency 185 kc t78 M t26 100 100 7 l 40 3t.7 1 0 4.5 14.2 :

26、 0.8 Response Limit 100 Mw r45 r49 1 0 3.5 /.) 50A 70 1 0 50 60 1 0 3 7 50 1 0 262 265 252 258 453 459 436 447 824 836 795 8 1 6 I 508 r530 3.5 7.5 4.0 10.0 5.0 10.0 5,3 1 0 1 0 D D D 31 G:,l !.a TM 11-850 N 23 Band A A A B B B C C C D D D E E E F F F Freq. * Kc I 500 2200 3000 3000 4000 5000 5 000

27、6500 8000 8000 9500 r 1000 r 1000 t2500 I 4000 I 4000 I 6000 I 8000 Calib. Kc Dev. +5 +10 0 -7 +5 -7 -5 +5 +5 -5 +5 -5 -5 +5 0 -5 -5 +5 Noise MW Output Overlap Kc Hi-i,o end 1483, 3037 2955 507 5 4903 8099 7 882 rrI59 107 55 r4196 IJ7 80 18228 23. Chart of Normal Perforrnanee: a. Normsl Performsnce

28、Chsrscteristics for Radio Receiuer BC-312-IL Sensitivity pv AVC MVC 5.4 3.4 2.4 4.3 2. 1,7 3.5 t.9 r.5 -2.2 T,5 1 . 1 1.5 t.3 1.0 1.9 1 . 1 1 . 1 I-f Rejection Image Ratio 4 1 8 M 1 1 5 13.3 84 44 20 29 l 7 8.7 40 7.3 2.2 2 1 . 2 .66 .9 .6 .3 3 8 l 7 I 8 20 3 t4 I 5 a ) 4 2 6 8 5 1 2 2 4.1 2.0 1.4 3

29、.5 1.4 T,2 2.2 t.0 0.9 1.6 T,3 l . t 1 . 1 0.9 0.8 2.3 1 . 1 1.0 Selectivity MVC 2000 kc l0 x-12.7 kc Frequency kc I 500 AVC .8 I-f Ratio No response C-w Sensitivity pv Frequency kc MVC 1500 .7 32 b.Normol Performance Choracteristics of RadioReceioer BC-31z-NX, Calib. Noise MW Kc Dev. Output Overlap

30、 Kc Hi-Lo end 1483 3037 2955 5075 4903 8099 7 882 11t59 . r0755, 14196 13780 Sensitivity pv AVC MVC TM 11-850 N 23 Image Ratio 446 M 128 36 100 42.5 32 42 l 9 8.2 16.5 7.3 2.8 6.7 2.7 0.96 3.0 t.2 0.37 Band A A A B B B C C C D D D E E E F F F Freq. Kc I 500 2200 3 000 3000 4000 5000 5000 6500 8000 8

31、000 9500 I 1000 I 1000 r2500 I 4000 14000 I 6000 1 8000 2 T4 25 I 4.7 t4 3 10 20 7 3 I 9 5 2 2 2 I1 8228 2.8 t.4 1.2 2.0 1 . 1 0.9 r.4 0.7 0.6 t.3 1 . 1 1.5 0.6 0.6 0.6 0.7 0.7 0.9 3.5 2.0 t.7 2.2 r.5 r.3 1.8 1 . 1 1.0 1 . 6 1.3 1.4 0.9 0.8 0.8 0.9 0.9 1.0 +5 -10 0 -5 +5 -5 -5 +5 +5 -5 +5 -5 -5 +5 0

32、 -5 -10 +5 Selectivity MVC 2000 kc 10 x:13.5 kc Frequency kc 1 500 C-w Sensitivity pv MVC .9 I-f Rejection Frequency kc I-f Ratio 1500 No Response AVC .8 a 33 F=Ti1rr=: TM 11-850 N 23 c. Normol Performsnce Charocteristics ofRadio Receiuer BC-342-N. Band A A A B B B C C C D D D E E E F F F Freq. Kc 1

33、.500 2200 3000 3000 4000 5000 5000 6500 8000 8000 9500 1 1000 l 1000 r2500 14000 14000 I 6000 I 8000 Calib. Noise MW Kc Dev. Output +5 +5 -5 0 -5 0 +5 0 0 -5 0 +5 0 0 +5 -r5 -10 -10 3 I3 T5 I 5 l 2 3 4 10 3 3 2 3 5 5 I 2 2 Overlap Kc Hi-Lo end r483 1 3045 2956 5077 490r 81 13 7884 t t t 7 2 t0751 t4

34、203 r3789 Sensitivity pv AVC MVC Image Ratio 450 M 100 26 62 40 r5 50 t4 4 1 8 7 4 6 3 2 2 l.t 0.5 I-f Ratio No Response AVC t.2 4.9 2.9 2.0 5.4 1.5 1 . 1 2.0 r.3 1.1 1.8 1.4 t.2 1.0 0.9 0.8 r.7 1 . 1 1.0 5.3 3.9 2.8 4,7 2.1 t.6 2.6 t.7 1.4 2.2 t.7 r.2 1.3 1 . 1 0.9 t.4 T,2 1.2 Selectivity MVC 2000

35、kc 10 x-l3.6 kc t8240 Crystal Selectivity MVC Width 10 x-2O0-cycles I-f Rejeetion Frequency kc I 500 C-w Sensitivity pv Frequency kc MVC 1500 .86 Crystal Frequeney I 500 2200 3000 Sensitivity pv kc MVC 2.7 0.6 , 0.6 34 f*.;-t- F r d. Normol Performance Chsrocteristics of Radio Receioer BC-314-G. 6 3

36、0 50 4 30 50 4 20 40 3 I 5 38 7 28 49 6 32 49 7 30 50 8 23 40 Ratio Ratio 580 M 6.0 1.8 5.4 4 . 4 L 2 5.2 r.3 4.2 1.1 3.j 1.0 5.0 r.3 4.3 3.3 I .0 5.3 r.5 3.6 1. 1 3.t 1.0 Im4ge Ratio 2TO M 190 160 r40 95 60 52 2l 7.5 19.4 6 t.7 TM 11-850 N 23 Selectivity 10 x Limit 6.; 5.; 8.0 7.0 Seleetivity 10 x

37、Limit 6.5 6.; l, zl .s Band Freq. Calib. Noise MW Overlap Kc Sensitivity pv Kc Kc Dev. Output Hi-Lo end AVC MVC CW A 150 0 A 200 -1 A 260 -2 82600 B 360 -2 B 450 -2 c4500 c 600 -3 c 820 -2.5 D8200 D 1200 -2 D 1500 -5 150 200 260 260 360 450 450 600 820 820 1 200 I 500 0 -2 -l 0 -3 -2 -2 -1 0 0 -3 -3

38、 I-f Reiection Ratio Frequency kc Ratio 150 500 M t47 263 254 455 440 gz.g 809 1 5 1 8 5.6 5.2 4.3 5.0 4.1 3.2 4.8 4.1 3.1 5.2 3.3 3.0 C-w Spurious Response e. Normal Performance Chatocterisrrcs of Radiq Receiuer BC-344-D Calib, Noise MW Overlap Kc Sensitivity pv Ke Dev. Output Hi-Lo end AVC MVC CW

39、Freq. Band Kc Frequency ke 185 Response 20 MW Image Ratio 208 M 197 r64 138 97 59 54 2T 7.8 20 7 1.3 A A A B B B C C C D D D t47 262 254 455 441 829 809 15r6 5.8 5.0 4.r 4.7 4.0 3.4 4.6 4.3 2.9 4.8 1.2 2.9 6.2 2.0 5.2 4.3 1.8 5.0 r.3 4.2 1.0 3.6 1.0 5.0 1.4 4.3 3.2 1. I 4.9 r.3 3.3 1. I 3.t 1. 1 I-f

40、 Reiection Frequency kc 150 C-w Spurious Response Frequency kc 185 Response 30 MW 35 *.-,i.# . . 1 TM 11-850 N Z:4 RADIO RECEIVER 8C.312.N X t h p r i o i2 K K K K K K K K K K K K K K K K K K K K K F K K F A E E q q q E F 5 . . : S : : : 8 8 S H r F 5 5 5 5 5 5 5 5 5 5 : : 5 K 8 3 K H E H B q . F +

41、+ i i 4 i + + i 4 + + + 4 d d + i + 4 i + i 4 i i i 4 4 F t i . i . i . i . i I r L r - r - r - r - f - L d d d d d d d d d c i d d d d #frA B H H ; B B 3 e33333e32e43.a.a, h a d)a o a a a a 6av) fq f1 frl F1 Fl Fl fl fq fl H fl Fl f.l fl Fl f fq fI frl fl fl fl fl f1 f.l t t F F t F ; Fr F :i lr t

42、fi ! Lt ! ! ! ! ! ! ! ! ! | *AAAAAAAAAAAOOOOOT- q) I 9 9 9 9 v v v v v v v v v v v v v v v b0 f r o r : o c : o o o c l o c . l . - t o o o o o o o Q c . : O O O Q o I =in:? C cl c c I O S -l-) I cd g O o) si Ax i-. t F s YA - . . ! g g d ; g f ; o = c E e ) B h 0 q H s E cFt zi Q) 5 v ! E x . i s H

43、 g !ri: x o - o . o ) E ri rn o a ! 8 d f i a !*r*lT,r.,.iT*-Yr+*!i !d3i ii il A i i X * a S i I n * i f i r . , i h F l i l d d d s o 6 _ _ a m v t , r o I E E I S g F F F F E F S I I S S I : t : i i : E E g ; g E l u t q a r u u f u u r f u u b f f ! h t r r : e p d h B f ; E E E I E F E E E E E F

44、 E E E H E E E E E H H H T T N g g T A ; : E E E E E E E E E . E F . E . E F F F F F F F . F E E E E - ; + i * f l : ! i E E EE EEE i E ! E i ! s F E E i E E E 5 E i Es : 5 E 3 I F i. 5, dr m r) -r r-r ci. pq O A ftl g. d n c.l Q H fr1 m - A r-a r- P *i.*i.-i+iri T H . / , - . r F L . r H = I Y Y T

45、T T - f ? Y l ? t l t Y T Y t 6 E f I I - , f . , j d + d + d d d + d + d + + + d + + + d o q = l e o o H . . t H l . | - e s s t r s t r t r t r t r t r t r t r t r t r s t r s t r E E . E - E E E u ; i ; u ; E d d d d d ; ; r : d ; d d d d R d d d d d d lu lv Lu lv Lv Lv Lu Lv Lu Lv Lv LuLv lv Lv

46、Lv rv !v rv tv /v. r,y- r.r /.i n /y.1 .ii di rn rn rn rn m rn rn r1.1 .yl l.i.l m m m m Fq m A ; J ;l ; ; ; Ci Fl Fl ll Fl Fi H Fi Fi Fi H F l l* r- H t s 8 T T T +r S ,li qi .r-! E * E o t s + + E t_l rorrJr() - 3 o T p r r q q e F q T u l = Y s - r J i 6a(o : E,hRo *.ts a : : E H H .; H ,-ro,r*dd

47、do*o*o*dddl*e*c)*ddd a a a a u ) a a a a a a a a a a - - 8 . t , f r . 8 i i g g 3 g I 5 O) r- r- O O O O) r-l t-l O O O Q t-9 O Oq) i -l O O Ot qa S rO t S? ry q q q q s r y s q q q q r y q q q q q q q q q q qqqry q q E l O O c ; - l C - 1 . ; ; ; q ; O O O O O ( J O O O ( J ( ) C J O O Q O Q O O O

48、 tr ! tr Fr ts tq tr Fi tr Fr r ! ! r F: r F ! | F. ts F Fr F S | rr S I r 5 s s s s s E s s E E s S S s s E . . . ! E 6 E E E E E E E -o E E q q 6 q q q q q q q q q q q q q q q q F d E i F 6 6 6 F c i 6 d S d d S C t 6 s d d A c s c B c n d d d c S c c A E p . n p , A d . e . A E e d . + + r i q q q q + + q + a q * q q e . q + d d d d d d a d l - ; i h ; l a l i d d d r d i ; d ) a t r d d d C S C S C $ 3 8 ( 5 , 5 8 3 8 ( 3 , 5 6 E E d d 8 d d d - c S d d d d d r S d o ( ) d o c ) o r F r ! - o o o o ) t - ! - l o o o o ) F ! i o o o o ) - l i o o o s