JRC NDR-91 Instruction Manual Download Page 6 | Manualshive

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Summary of Contents for NDR-91

Page 1: ...2 REV INSTRUCTION MANUAL RECEIVER o O flrytnadioCo Ild...

Page 2: ...MODELNRD 91 RECEIVER OUTSIDE VIEW DESK MOUNT TYPE o o f f i M O D E LN R D 9 1R E C E I V E R OUTSIDE VIEW CONSOLE OR RACK TYPE...

Page 3: ...RES 4 2 1 BasicOperationof SSBReception 4 2 2 BasicOperationof CW Reception 4 2 3 Operationof DSB Reception 4 2 4 Operationof FSK Reception 4 2 5 Operationof FAX Reception 4 2 6 Further Operation CIRC...

Page 4: ...L 6 3 3 N o i s e a n d B e a t 2 1 6 3 4 Interferenceby the Transmitterof Your Station 22 6 3 5 Intermodulation 23 Appendixed Drawings PartsArrangements Block Diagram Outline Drawing Circuit Diagrams...

Page 5: ...th power switohes when connecting or removing the printed circuit board and cables to external equipments 1 If the AUX mode is selectedat a condition where additional crystal is not provided the recei...

Page 6: ...e frequency can be set correctly 4 BC band rejector BC bandrejectorreduces the interferences suchascross modulation and intermodulation due to the strong radio wave of the broadcastingwave generatingd...

Page 7: ...th3 kHz 400 Hz 30 modulation Selectivity tenuation Bandwid 6 dB bandwidth 60 dB bandwidth 6 kHz 4 4 kHz or more l0 kHz or less 3 kHz 2 2 6 kHz 6 kHz or less 0 5 kHz 0 5 1 0kHz 3 kHz or less 8 Frequenc...

Page 8: ...dphoneoutput Frequencyresponse Distortion factor l1 Radiation I x lO eWor less l8 Norninalinput impedance 50 75 ohrns l9 Variablerangeof BFO 2 kRz or more 20 Variable rangeof Clarifier t50 Hz or more...

Page 9: ...k mount type t NRD 9 I MPBX I0832 NVA 92 ZCJDOOOO5 MPKCO3 I 08 M P_7 6ZXJD5IO43 Receiver Cabinetcase Speaker Powercable BK cable Instruction manu l ANT Connector Spareparts Test data Item Model or cod...

Page 10: ...is inducedin the receivingantenna When the induction current of the transmittingwavesis I ampereor less the receiveris protected by the built in input protective circuit But if the induction current e...

Page 11: ...to the terminal H on the rearpanel 4 If the break inrelay circuit is to be used connectthe specialcable MPKCO3108 to the tBK Lin l connector The AF outputsignal 600S unbalanced speaker output and 600O...

Page 12: ...ConnectorHSl2P 2 CableMPKCO 174l I White 24V For DC power input Cableis option 2 Black OV grounded 3 ANT M P 3ls17 Antenna input 4 B K LINE Connector S 13I2 CEA Cable MPKCO3l08 I White BK key signal 2...

Page 13: ...K FAX or other desirablemode is available Please inform us of your desirablemode or the frequency of the crystal when ordering Mount the crystal accordingto the following procedures I Insert the cryst...

Page 14: ...ightness by this knob accordingto the circumstance LEDs fadeout if this knob is turned fully counterclockwise Keepthis in your mind when usingthis receiver 3 Receivingfrequency indicator Displayingthe...

Page 15: ...level 6000 balanced 9 SPEAKERjack Usedfor connectingthe specialspeaker NVA 92 or the speakerof 600C1 impedance l 0 PHONESjack Usedfor connecting headphoneof 600C2 the optional headphones ST 3 or the i...

Page 16: ...ingtime constant The FAST position is for the receptionof DSB signals and the SLOIVposition is normally for the receptionof CW or SSBsignalaffectedby fading By settingthis switch to OFF the AGC circui...

Page 17: ...ob slightly clockwiseso asto obtain the bestS N of the receptionvoice 4 2 2 BasicOperationof CW Reception MorseTelegraph I Settn 11tQA Nl knob to 4 or 5 graduations 2 Press the ltw I buttonamons ilrel...

Page 18: ...terminal be sure not to change the BANDWID Hafter the circuit is connectedonce Otherwise it may happen that the phaseis out due to the differenceof the delay time of the filter 4 2 5 Operationof FAX...

Page 19: ...adio wave of the desired station These are called cross modulation and intermodulation interferences due to the strong radio wave of the broadcastingwave 525 to 1605 kHz In such a condition by setting...

Page 20: ...eiving signal is supplied to the AGC circuit and demodulator circuit respectively The AGC voltage for automatic gain control is applied to the lst IF AMP 70 455 kHz and 2nd IF AMP 455 kHz In caseof DS...

Page 21: ...ircuit by comparing the pulse of the wavetbrm of the 5 MHz standardsignal the pulsewidth is I 12 cycle of 70 MHz and 70 MHz signalevery l4 cyclesof the waveformof 70 MHz signal the phases of 5 MHz sta...

Page 22: ...nter thus the receivingfrequency is increased By setting this switch to I DOWN l the counter operatesasthe down counter and the receivingfrequency is decreased The frequency increasingor decreasing sp...

Page 23: ...CK Table6 1 showsthe generalmaintenanceand checkusingtesterand sometools Table 6 1 Maintenance and Check No Item Maintenance and check I Cleaning For cleaningthe panelsurface knobs switches top covera...

Page 24: ...tinggraduationis different among makers Even in caseof the samemodel receivers there aresomedifferences Also eventhough the distancefrom the partner station and frequencyare the same the wave strength...

Page 25: ...ocked 6 3 3 Noiseand beat Even though changingthe receivingfrequencyband noiseor beat soundcomesthrough the speaker But that noiseis evidentlynot externalnoise Especially in caseof small ship many kin...

Page 26: ...ansmitter of your station At the station where many radio equipments are installed when some transmitter transmitsthe radio wave the receivermay catch the noise in spite of that the frequencyis differ...

Page 27: ...etc 6 3 5 Intermodulation While receiving some frequency it sometimes happen to hear such severalsignal as cannotbe radiatedby that frequency This phenomenonis caused by intermodulation Checkingproced...

Page 28: ...equency convertedradio wave equal to the receiving frequency and interferesthe reception This phenomenonis calledintermodulation For example assumingthat the receiving frequency fn is 3855 kHz and oth...

Page 29: ...1 t I f c F L 1 8 4 n I T C A F 1 9 1 F ILTtrR R F A M P i QMtI 379 T F 2 N D O S C C G A_ T 2 V C O ir cGA e8 l 4 I OOP 1 C B D 5 5 6 P O W E R ffi t i f ffiHilff R 1 r T 1 TOPPARTSARRANGEMENT...

Page 30: ...I I J I r I I I a t BOTTOMPARTSARRANGEMENT...

Page 31: ...I 5 v t rX t t o 1 ril i ili fr l G t wi fi f 1 r t 1 lo r l l J lr tt r i rl 0 uJ lmMi I t 3 REARPARTSARRANGEMENT...

Page 32: ...t I I n l l t o l L J o l F l l l q I E I I W E I G H T 7 k s APPROVED H Pl n t u EClgeTTE 172 scatt N R D 9 I R E C E I V E R t E O U T L I N E D R A W I N G SHTE I 0 CH ECKTD Zle DESICIIED DRAWI fu...

Page 33: ...t l 6 I J t 6 e g ffi g P RFoAtN ltt Ill AF AIN oFF Aoc oFF powER O Vffi O i 9 P i _ PHOiIES o D SPtCIFtt0 TOLERAI ICE l t 2 4 8 1 2 0ntt r5t0ilsPEctFtE0 0 T 0 t 6 ovB 16 ro 50 oTrR 50 ro 250 ora 250...

Page 34: ...o o T l o d 4 O 6 M O U N T IN G H O L E 465 L2 l t l I I l ECI FI EO LERANCI T I L Z L 4 i B r t 2 W E i G H T l l 5 k s N R D 9 I R E C E I V E R I E O U T L I N E D R A W I N G DTSIGNID DRAWN 1 J I...

Page 35: ...o lux I E E E o l a i PHONES o RF OAIN 0 ATT BC BANO REJECT gl 9 tT t U U O F F O F F AOC POWER f f sl orY u oFF u ofF oc UI LESS OT 1ERITISE SPECI FIEO 0lrEilsloilsPEctFlE0 OLERANCE 0 r o 1 6 I oYE...

Page 36: ...L A M P 0 54 5 to 4549 MHz lPr oNEsl IsPEAKERI iBK LINEI B K L I N E o u r I r O ffil lccNTl lcouPL H 4 5 6 5 k H z t 5 A H z a p p r o x o l DCr4 l I J A I BAIDwIDTH kFt L I M I T E R 1 n n I r l t...

Page 37: ...l f l u 4l 1 3SHHz I AH 4 leNrl u Eu J _ ffiffil Lm l a u e l i l r l 13 2iq i x l M x t O M I I ffi 5 i 4hz r _T_ T C C _ t 2 5 k H z I r l r l i L sMHz t x t 0 0 k x l M x 0 1 T l T Tou i i DISPLAY...

Page 38: ...C N 6 3 I P T t 5 D S c D E 3 2 8 D I S P L A Y ru J t I tl J 5 iL I IL 4 LJ r 7 J O I r l r l z I s r s l j F s N u o vl I 2 u t c o N r I S I _ I A S S I S T I T L C O N N E C T I O N D I A G R A M...

Page 39: ...l tr l ir elL 1 l o J 1 b 5 3 t t l O v I fe l t o v r t l 0 V l t r o o v l llr l E r ill tur4b l i i litt 7li l ___ Tn I t l l l l l t l l l l l c B D s 5 6P o l v E R l r r a l l l l t r o D I M C...

Page 40: ...l C z o t t t l l o o ti O l u h ir7 ln t 5 v I L i c6 I t t cr I o ty T tooV m a 1y 7m 7n 7717 zscr i bo rrp 2 t Q 5 v Z rsrsoB 3 3 u Prs lq DIMMER CONT c 1 3 3 l o r j u L v v p r g r r r z nn r c l...

Page 41: ...I o t I 3 N L t t L tf r ta fc RrvtstoNs I f m AC zZV IN A C 2 2 V T N G N I A C l O YI N AC IOV I N G irl C D C 4 V I N DC 4V OU T DC2 V IN M D B E s S s C rr l c rrl z l l o o I 2pl Z J I H I u 5 0...

Page 42: ...M t z B P F L43 L44 1rH 0 68 lH H L4 6 t OO rH L67 loolH a t l E o otV7fi 220 I 7n 3T T J c 8 1 f zzo I m c80 r 8 0 c89 csl o 3 e o c78 1 2 0 i 0 1 7M H z L5 B P F L53 O ryr H c83 0 o1 t L55 C99 1aH 0...

Page 43: ...loo i tH a u 7y n z t b 1 e43 O O1 r p 7 R 5 c 5 9 l o o c 5 1 a r l 2 O c D 8 c 5 E R 6 c 7 7 1 O O c 7 4 4 J o t 8 0 a ot4 fi i n O I I A R 7 c B 5 1 o o C g 7 220 1 5 0 cD l0 4 1 4 ffi R E J E C T...

Page 44: ...t o o o l l t 0 0 i I l c R10 10 01 r s l R6 220 o ottt cos iea Ig r Y 6 i Lt T t 1r l Fl T i dl i gl i l l rii r o t k l l I l l y r t b o r l 0 r l e a _ e r t A 6_r l l 3kHz cs A r s I I t 2 l ig E...

Page 45: ...4 1 T u rt ti l la L l iooo I l l rnl t I r _ i u31o l i 3 c 6 tltl i j 1 v looo L i I B 1 7s6 l p 8 h 7 l i I r7v r t i 1 I s Y l no 1 17 r caz i n i rJJl r Ji tr r 1 i rsf LocAL Pi q o F tt8 Arr r...

Page 46: ...l o k l I lr Cao O 1 g c29 22oy z 8 or 2 c 4 L tzoo c 2 7 o 3 3 y r R 2 3 3 k P l t 1 4 nrarcot z zk c25 lOlt ctoS 7lO I Rt 2 6 r cP s sl T R 9 2SC I8r 5 Y R12 l 4r7 k T 3 R 6 3 10 0 k u J l ly 4 1k T...

Page 47: ...l 9 L r r81s Y 2scrsrs Y T s Olr cnO 4 l t_t H ti i 3 lF4il r I H l I at le rh i 5606ll ii l Fi 3 Ti l N c s r l l J c otAll r dl i ll or l T l T ffi l e o fl i i 4 7k i i h t t t l r l i T R I 6 5 Y...

Page 48: ...x c r03 ol E cs7 Rt3 J 5X R 5 r 0 0 I Q to H 22r ntZ i c o 6 8kF tooo c33 0 out c29 tOlL rT t t i ntpsynv 2sKtgzA BL r Y o R34 410 K 1 k FE Q35 041 L 4 7 R26 R R44 I M i R47 270 5V R48 4 tk l C f f x...

Page 49: ...rt rrt r P13 6 Pt3 7 Pt3 2 P 3 3 P13 4 PE 5 Pt3 t Pr3 r0 P13 g Pr3 8 a 2 V J J tooo F C s 6 iooo c 49 t 0 o 0 t Csz cs4 to o00 c5s t000 totLE r 22 rc26 n It23 25 tC28 c76 34 C84 fl g0 2 0 0 l t L VDD...

Page 50: ...100 Rt6 2 1 r 1 F 4 2 I 4 2 I cD7 13 A A 5 5 4 I K R 0 2 2k a D 2 0 1St588 R 1t 5 5 K n6 t4 r C 3 g t4 1 1 lrl 4 7 0 k r n 2 I I rsrssB i 2 ii 2 1 A 4 r 1 l ql ilr t I T _ toFF i l L ss r 022 L 4r70k...

Page 51: ...O K lBFo cLARri S t 3 S 4 S l 5 ffi I R V 2 A 5 K tRrGArN l DC D C A C A C P s_t Prs 3 S l E NA 3 I t E lsPFiKfr IPHoN s 16 t4 28 tG t4 8 7 8 t 4 8 7 c5 c6 c l A OUI0 0t 0 alt c Rf4 t w l l l l i l 1...

Page 52: ...c 1 U q J o b C l 3 N o t n 9 N o I1 J t tlEl L J IIJ HH o J 3 O u m rl E 3 rn t frl t I f o H i I I H H l t tl l l o lz l 5 o l x J tr To t ututu iH E A 2 2 2 2 D U r m o o e rr n r n 7 N L T r...

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