MAGGIORE ELECTRON'C LAB,

Pro

OPERATING AND MAINTENANCEMANUAL

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CON TENTS

I NTRODUCT I OH

0escrlptlonAppllcatlonPhyslcal Deseription0pe rat i ona I Cha racte r i s t I cs

CENERAL SPECI FI CAT IONS

Crystal Specifications.... ..2-lTransistor and Diode Complement.... ...2-l

INSTALLATION AND INITIAL ADJUSTHENT

Unpackln9.... .....3-lPreliminary Procedures ......3-tPre- lnstal lation Notes.... ..3-lSlte Selection ....j-lAntennas /eaiustments. .. .. . . .3- I

RECEIUER APPLICATION INFORHATION

lntroduction .. .. . . r{*lWiring. lnformation .....4-zGettlng lt To l.Jork .....4-3

THEORY OF OPE RAT I ON

lntroduction .,.........5-l

AL I GNMENT

Alignment Procedure.., ......5-l

lt

l-l

1-2

DESCRtPTI0N. Haggiore ElectronicC6'o ratoils Mode I RAU (r i e. I - I )is a sol id-state, completely self-conta ined recei ver, des i gned toprovide rel iable and versati le FM(frequency modulat ion) commun i ca-tions in the frequency range of400 to 512 tltz. The receiver canbe supplied in a wide or a narrowband configuration as describedi n Performance Speci fi cat ionsTable 2-1. The construction iscompact, I i ghtwei ght, and rugged.

APPLICATI0N. The unit may be usedl^,iTE-o'tEer-FM t ransce i ve rs provi ded :(l) transceivers are tuned to thesame channel frequency, (z) trans-ceivers are adjusted to the samemodulat ion deviation, and (:) trans-ceivers are operated in an FH systemof the proper antenna polarization.

PHYS I CAL DESCR I PT I 0N. The d i -ffiare63/16inches long x 3 7/8 inches widex I 3/$ inshes deep.

OPERAT IONAL CHARACTERI ST I CS.e

operating frequency range ofthe receiver is a function ofthe fol Iowing characteristics:( I ) antenna hei 9ht , (Z) te rra i n,(3) receiver sensitivity, (q)condition of operating powersource (batteries) and (5) trans-mi tter power output. Commun i -cation is general ly I imi ted tothe line-of-sight distance be-tween the recei ving and trans-mi tt i ng antennas. Maxi mumoperating range can be obtainedwhen both receiving and trans-mitting antennas do not have anyI arge i nterven i ng objects betweenthem. An improvment in distancecan be real i zed when us i ng h i 9hgain antennas.

1-3.

l-4

l-l

2-1. -RECEIVER SIECIFICATIONS. Table 2-3. TRANStsToR AND DtoDE coHpLEMENT.e speci

fications for the model R4U. and diodes used in the RqU. Thetype and funct ion of each tran-2-2. CRYSTAL SPECIFICATIONS. Crystal sisror and diode are listed for

ffi R4u are rapid identification.provided in Table 2-2.

Tab le 2- I. Performance Speci fi cat ionsGTNERAL

0perating Frequency Lor^r - 400 to 444 MHzHi - \42 to 470 trHzExtended - 465 to 5l ? ilHz

lnput Vol tage I 3.5 Vdc nominal, I 1 .5 V min. ,l5 .0 V maxi mum.

Current Drain Receive Standby (squelched): 75 mA nom.Receive (unsquelched) : l7l mA @ 500 mwaudio.

0perating Temperature Rangeik -30oC to +50'C

Antenna lmpedance 50 ohms-suitable for whip antennas.Type of ltodulation FM voice.

,IN0TE: Amateur equi pment i s f urn i shed for atemperature range of -10'C - +50nCunless ordered for commercial specs.

2-1

Table 2- I . performance speci fi cat ions (conti nued)

R.ECEIVER

Sensi ti vi ty

Ci rcui t Type

Selectivi ty (f lR stNno)

Hodul at ion AccePtance Bandwi dth

Spurious and lmage Attenuation

0scillator StabilitY(see note page 2-l)

Residual Hum and Noise

Audio FrequencY ResPonse

Audio 0utput Power

Audi o Di stort ion

Table 2-2. Fi rst Osci

Ty PeHol derHol der Capaci tYCrystal CaPaci tYMode of OperationEffective ResistanceDri ve LevelOperat ing TemPerature RangeFrequency Tol erance

l2 dB quieting: 0.20 nom. uV20 dB. qu iet i ni : 0. 35 max. (0 ':A nom' ) uVI 2 dB S inad : 0 .25 nrax. uVThreshold squelch: 0.2 uV max'

C rystal -cont rol I ed, dual -convers i'onup to 6 channels.

Narrow band: l'l 0 dB min- at +30 kHz(lJ0 dB minimum @ fo kHz oPilonal)Wide band: 90 dB min. at +50 kHz( t oo aa mi n i mum @ $O kHz-oPt iona I )

Narrow band: +6 kHz min.Wide band: +lS kHz min.

90 dB min.

+0.0005% narrow band (10'0002% opt')+O.OOl % wi de bandTrom - 30o to +600 C (z5o c reference)

Better than 55 dB down from rated out-put wi th standard nodulation input'

l/Jithin +2 to -3 dB'of 6 dBloctave de-emphas i s characteri sti c from 300-3000Hz, 1000-llz reference.

Speaker load (8 ohm): 2 watts nom'

Less than B% at rated outPut'

I lator Crystal SPeci fi cat ions

Mi nature Pl ug- i nSimilar to MIL TYPe HC-25/U7 Pf max'32 pt 10.5 pf3rd overtone, paral lel resonance35 ohms max'lmW-3ooc to +5oocCal ibration: +0'0015% of exact speci-fied frequency at room temPerature(25" c +loc reference)

2-2

Note:

Use Fc +10.7 fromUse Fc -10.7 from

Table 2-2. Crystal

RECE I VER

Frequency Tolerance (cont inued)

Crystal Frequency

Speci fi cat ions (conti nued)

(continued)

Drift: Over temperature range(-3OoC to +600C) shall not eiceed+0.00252 (Z5oC reference) narrow band,+0.005% wideband.

Determined by formula: (also see note)

Fx = Fc +10.7 t4{z/9

whe re

Fx = Crystal 3rd overtone freguencyfrequency in HHzand

Fc = Channel f requency in l.,lHz

RECEIVER 2ND CONVERTER

405 to440 to

440 tlHz

512 l{Hz

TyPuHolderF req uency

HodeLoad Capaci tyEffect i ve Resonance Res i stanceDri ve Level0perating Temperature RangeFrequency Tolerance

Crystal Frequency

Minature solder-inSimi lar to HIL Type HC-18/UStandard: 11,155 |{HzAl ternate: I 0.2\5 AHzFundamental, paral lel resonance32 pF +0.5 pF25 ohms (max.)I mlrl max.- 3oo c to +6o0 cCa I ib rat ion : +0. AOII. at 25o/ CDrif t: +0. OO15'4, =30o C to +600 C

Standard frequency used for al I frequenciesexcept alternate to be used when channelfrequency is a harmonic of standard frequency.

' li ' '.tli,),? FcF']l-1

2-3

CIRCUIT SYMBOL

QI

Q2

Q3

q4

a5

DI

D2

D3

D4

lC- | Ltl-3053/CA-30288 Second tF AmpI if ierl9-z L!4-30531CA-3028A 0sci I lator LimiterlC-3 llc-1358 Discriminator

Lt4-3065

I C4 Lt{3046 Sque I ch Ampl i f i e rlC5 LH-380 Audio 0utput

Table 2-3. Transistor and 0iode Complement

TYPE

RECEIVER SECTION

HRFgOI

l'tRF904

2N5t79

2N5 r 70

2N5 I 70

FUNCT ION

l0v

I Ng l,r

lOv

l0v

RF Ampl i fler

Fi rt Convers ionHul tlpl ier

Multipl ier

0sci I lator

Regul ator

I'letering Rectifier

Regu I ator

Regulator

2-\

3-\. SITE SELECTIoN. Due to the Iine-offFt transmission and receptioncha racteri st i cs of the R4U, i t i snecessary to select a Iocation wherethe antenna wi I I be free from obstruc-tions blocking I ine-of-sight trans-mi ss ion. I t i s des i rable to elevatethe antenna as high as practicable tofurther increase the effective trans-miss ion range of the equirpment.

3-5. ANTENNAS/ADJUSTI,iENTS. The antennasffiof twobasictypes i i .e., the s ingle-f requency,pretuned, nonfield adjustable typesand the field adjustable types. Thefield adjustable types are generallytunable over a limited range of about3 to 4 MHz and it is essential toselect the antennas to match the oper-ating frequencies of the unit used.

tJhen the antenna is of the basestation or vehicular type employinga length of coaxial cable for afeedline, it is desirable to checkthe VSWR on the line using a thru-line type VSWR bridge. A VSWR inexcess of 2. I generally indicatesthat the antenna had not been pre-tuned to the correct frequency band.Full I/4 wave vehicular antennas re-qui re Ircutt ing to f requencyr, and i n-structions packed wi th such antennasshoul d be fol lowed careful ly. Whenshortened whip antennas are used(less than I/4 wave) the antennashould be checked for effective ra-diation. This can be done by usinga simple field strength indi cator.

3-?

4-1. tNTRoquciloN. The RIru was spe-ffiA&igned for repeaterservice and provides featuresnecessary for this appl ication.The features are:

l. Helical resonator tuned rfstages.

2. Rapid introduction to band-width determining stages.

3. High overload rejection.

4. Electrical stabi I ity withmultiple voltage regulation.

5. Thermaly stable componentsused extens i vel y.

6. Advanced sguel ch ci rcui try.

7 , Expandab I e up to 5 channel s.

8. Des ignated open col lectorC0R control output.

9. Direct access to unprocessedaud i o.

10. Remote tone control capab i I i ty.

\-2. RECEIVER \/,IRING EXPLANATION.

Pin Connections DescriptionA

-

GTi- power supply for receiver. +13.5 volts f iltered D.C.

B Ground s i de of mai n power supply.-l 3.6 vol ts fi I tered D. C.

C H i gh I evel squel ch control I ed audi o output. B ohmsnominal. Up to 2 watts audio power.

D Ground s i de of I 0k vol ume cont rol .

E Wi per of I 0k vol ume cont rol .

F Remote tone squelch control. 15 volts will squelchaudio s, C0R I ine.

0pen col lector COR control.Ungrounded with presenceof signal. Where a positive voltage is required, apull up resistor of approximately 22k can be used.Do not exceed 20 ma load on this output. Use a pro-tection diode if an inductive load is used.

Wiper of 10k/5Ak squelch control.

Ground s ide of l0k/50k squel ch contro'l .l+- I

H

I

\-2. Pi n Connections Descri pt ion

High side

High side

I+.3. GETT I NG IT TO WORK.A. The squelch circuit. Care

has been taken i n the des i gnto provide a verY stable squelchci rcuit. 0nce the proPer settingis made, the squelch control neednot be cont i nua I I y readj usted.To adjust the squelch control, ro-tate this control completely count-er clockwise. Then slowly rotateth i s cont rol cl ockwi se unt i I thewhite noise present at the audiooutput drops. This is the criticalsetting of the. squelch control, anda slight increase in the same direc-tion is alI that wi lI be needed forthe proper sque I ch sett i ng. Th i ssetting will give the best over-al I squelch action for weak signals-Too tight a setting wil I cause thesquelch to chop the audio duringaudio peaks.

B. Terminal rrcrr on receiver board is anopen collector output controlled bythe squelch ci rcuit. When a signalis present, this terminal goeshigh and is capable of sinking upto 20 ma of current. Th i s termi nalis normal ly used as the input to ourCOR Board. lt can also be used toactivate an L-E.D., reed relay orany other low current device.

I0k/50k squelch control.

l0k volume control.

of

of

14

Discriminator meter outPut. l'leter movement, 50 ua.

Signal level output. Meter movement' 50 um.

Shield, 50 ohm unbalanced.

Center conductor, 50 ohm unbalanced.

C. Terminal rrFrr. The squel ch canbe control led i ndependentl yfrom the normal squelch withthis terminal.

Mode A: Wi th the rece i ve rnormally squelched (no audio)shorting terminal IF'r wil Iopen squelch (audio wil Ibe present).

|{ode B : Wi th the rece i ve rsquelch off (audio will bepresent) ir +5 volts D,c. isapplied to terminal rrFrr, therecei ver wi I I be squel ched(no audio).

Squelch control pot 10k/50ktThe higher the resistance ofthe squelch control pot, thefiner the setting that can bemade. The h i gher res i stancepot wilI cause less upper limitsque I ch actLon.

Terminal rrLrr. This output maybe used for frequency monitoring.By placing a 50 ua meter inseries with a 50k zero centerlngpot to ground, wi I I al low rnoni-toring of receiver input fre-quency. Di rect low Ievel audiomay be sampled at this terminalbefore ampl i fi er stages.

D.

E.

4-2

4-1. F. Terminal rrl4il. This outputmay be used to monitor relativesignal level input to the receiver.Since this is only a relative read-ing, a minimum signal of at leastI uv is required to cause a deflec-tion on a 50 ua meter.

4-r

5-1. INTRODUCTI0N. Rapid and effici-

--

ent aPPI i cat ion of ma intenancetechniques requi res comPleteand thorough understanding ofthe circuits used and the theoryof operation. The subsequentparagraphs describe the theorYof operation of the ci rcuitsused in the RltU receiver. Forease of unde rs tand i ng, the c i r-cuits are described in the or-der of s ignal f low. Referencesare made to the block diagram(fig. 5-l) and the schematicd i ag ram.

5-2. RECEIVER Cl RCUITS. The recei verffirsion, super-heterodyne receiver caPable ofoperating in the 400 to 512 MHzreg i on.

RF energy enters the antenna ter-minals and is filtered bY the heli-cal resonator and is amPlified bYa single stage RF ampl i fier stage.The output of this ampl ifier stageis fed to another heI ical resona-tor and than to the mixer. Themixer recei ves i ts local osci I la-tor injection from a crystal con-trolled osci Ilator which uses cry-stals in the h5 MHz range.

The output of the mi xer i s fed to a10.7 MHz lst lF amplifier through a10.7 MHz filter. Up to eight poles offiltering helps to provide up to l05dBadjacent channel rejection. The out-put of the 10.7 MHz lst lF stage is fedto a 455 HHz, 2nd lF limiter stage.Th i s s tage provi des the necessa ry I i mi -ting required for FM reception and willstart Iimiting at about 20uV. The out-put of the 455 MHz 2nd lF stage goesto a quadrature FM detector.

Audio output from the quadrature detec-tor is fed to an audio stage and to asguelch ampl i fier. The audio stageconsists of an 1M380 audio ampl fi ierthat is capacitively coupled to thespeaker. The squelch amplifier ampli-fies neise in the absence of a carrierand produces a D.C. voltage which op-erates a transistor switch to turn offthe audio chip in the absence of acarrier. When a carrier is present'the squelch circuit sees no noise andturns the audio ampl i fier on so thatthe FM audio may be heard.

Figure 5-i

5-1

7.

PROCE DURE

5- l. RECEIVER ALIGNMENT. Completeffi requires theuse of the following testequ i pment:

l. Signal generator with 50-ohmoutput covering 455 KHz, 10.7MHz, and the channel frequency.

2. Sweep generator.

3. VOH test meter.

4. 0sci I Ioscope.

5. Frequency counter covering thechannel frequency,

I2-VDC power source, negativeg round.

AL I GNMENT:

Audio frequency wattmeter orSinadder or equi valent.

RF STAGES.

A. Connect the s i gna I generator. Setreceiver volume control to about midrange. Set the sque I ch cont rol ful I ycounter-clockwise. Connect the recei v-er to the 12-14 volt power source. Somebackground noise should be heard in thes peake r.

B. lnsert a receive crystal into the appro-priate crystal socket. The osci I latoris tuned fi rst by connecting the volt-meter across the emitter resistor of Q4(the negative lead to ground, the posi-tive lead to the top of R33). Adjustthe oscillator coil, Ll2 for a maximumvoltage reading. Renpve and re-applypower to the receiver to make sure theosci I lator wi I I start each time. lf theosci I I ator does not sta rt each t i me,readjust Ll2 slightly off peak until itdoes. Then adj ust Ll i for a d i p, i ndi -cating resonance. Move the test lead tothe q3 side of R3l. Tune LlO for a peakreading, then adj.ust C47 for a dip. Atthis point, the receiver should be ableto detect st rong s i gna l s ( 1 000 mi crovol tsor so). Now adjust Cq5 for max. signal.

C. Connect the voltmeter to testpoi nt rrHrt and ground. (Seeassembly drawing) Fig. l-1.Set the rf s ignal generator tothe channel frequency. Adjustal I of the rf coils for a maxi-mum reading on the meter. Donot adjust the 10.7 or 455 iftransformers. Compensate forthe increase in gain due toal i gnment by decreas ing thesignal level from rf generator.The limiter voltage must be keptbelow the 3-4 volt range (l imit-ing occurs). lf this conditioni s not ma i nta i ned , the rf sys temwi I I not be properly al igned.

IF ALIGNMENT.

NOT RECOI4HENDED UNLESS ABSOLUTELYNECESSARY AND COHPLETELY FAMILIARWITH IF SWEEP ALIGNMENT PROCEDURES.

Connect oscilloscope to secondaryof rrL6't, \55 KHz transformer.

Couple sweep generator set atI0.7 MHz and a sweep width ofapproximately l5 Khz to highside of I'R5" through a rr47t'pf capaci tor.

Adjust "Ll , L2, 13, 14, L5 andL6" for best passband. SeeFig. 6-1.

A.

a

Figure 5-l

Vary the generator frequency FH mod-ulated by-a 1000 Hz tone and 4 kHzdeviation up and down until a maxi-mum voltage is indicated at the F.first Iimiter test point. This willensure the generator is centered inthe bandpass of the crystal filter.Readjust all the if transformers,Ll through L6, for a maximum reading.Repeat this step several times unti Ino increase to the limiter voltagecan be made.

ALTERNATE I F ALIGNHENT.

The di scriminator transformermay be adjusted bY severalmethods. The most accurate isto connect an osci I IoscoPe tothe discriminator test Point orsquelch output, and adjust Llfor noise spikes sYmmetrical lYabove and below the basel ine(no s i gna I ) . Acceptab le res ul tscan be obtained by adjusting L/for peak noise on a signal freechannel. This wi I I correspondto minimum audio distortion.

The voltage at the discriminatortest point should be 5.5 volts to6.5 volts with no signal. lt shouldalso measure the voltage approximate-ly with a signal centered in the re-ce i ve r bandpass . Va ry i ng the s i gna Ifrequency across the bandpass wi I Icause the voltage to change about Ivolt each side of center.

Set the signal generator to the re-ceive frequency. Turn the outputlevel of the generator to the offposition (below -130 dBm). Advancethe squelch control clockwise untilthe audio cuts off. This point isgeneral ly found at one-hal f to threequarters of a ful I clockwise rotation.With the receiver muted or squelched,increase the output level of thegenerator to the point where the audioi s swi tched on. The s ignal level atthis point should be on the order of.J microvolts or less.

NOTE: Some generators develop enoughrf leakage that a proper squelch set-ting may not be achieved without mov-ing generator off frequency.

The receive crystal may be netted onfrequency by adjusting the trlmmeradjacent to the crystal.With A.C. vo'ltmeter connected to pinttCtt ad j ust he I i ca I resonator for mi n i -mum A. C. vol ts ( I owest noi se) .

D.

E.

6-z

PARTS LIST MAGGIORE ELECTRONIC I,ABSCONTRACT NO. FSCM NO.

PLREVIST0N

LTR

DATE

LIST TITLE: Hi Pro Rl{U Receiver AUTHENTICATION:REV AUTH NO. SHEET

OFSHEETS

ITEM ORFIND

NUMBERQTYRQD

QTYRQD

QTYRQD

UNITOF

MEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOMENCLATURE OR DESCRIPTION

CIc2caCqC5

c5r1C8

C9

cl0ci Icl2c]3Cll{ct 5cr6c17crBc19c20c21c22c23CZLt

c25c26CZ7c2 8c29c30cl Ic32c33c 311c35

CIc2caC4

c5c6c7CB

cgcl0cllcl2cl3cr4cr5c16c17cr8cl9c20c2lc22c23c24c25c26c27c28c29c30c3lc32c33c3t1c35

27 PF DISC CERAMIC NP0.OOI MF DlSC CERAI4ICI+1 PF DISC CERAMIC NPO5 PF DISC CERAMIC NPO47 PF Dtsc cERAI{ lc NPo27 PF DISC CERAMIC NPO.OI MF DISC CERAMIC3.3 PF DISC CERAI4IC NPO3.3 PF DISC CERAMIC NPO.02 MF DlSC CERAMIC NPO3.3 PF D ISC CERAI'Ilc NP0.02 MF DISC CERAMIC.02 MF DISC CERAMIC.02 MF DISC CERAMIC.02 MF DISC CERAMIC.O? MF DISC CERAMICDeleted58 PF DISC CERAMIC NPO22A PF D I SC CERAMI C.05 MF DISC CERAMIC.05 HF DISC CERA}4IC.05 MF DrSC CERAHIc220 PF DISC CERA},IIC.05 MF DISC CERAMIC.005 f-4F Dlsc cERAI'1lc.02 MF DISC CERAMICI5O PF DISC CERAMICI OO MF E LE CTROLYT I C CAP .I+7 MF ELECTROLYT IC CAP..02 MF DISC CERAMIC.OOI HF DISC CERA}4IC68 PF DISC CERAMIC NPO.I }4F MYLAR CAP..05 MF HYLAR CAP..OOI MF DISC CERAMIC

PARTS LIST MAGGIORE ELECTRONIC I,A}SCONTRACT NO. FSCM NO.

PLREVISION

LTR

DATE

LIST TITLE: Hi Pro RIU ReceiverAUTHENTICATION: REV AUTH NO. SHEET

OFSHEETS

ITEM ORFIND

NUMBER

QTYRQD

QTYRQD

QTYRQD

UNITOF

MEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOMENCLATURE OR DESCRIPTION

c35t-2 1

C3Bc39Cl+0Cl{ Ic42.c43c44c45c46c\lc48Clr9c50c5lc52c53C5\c55c56c57c58c59c60C5ILbtc63 /68

c69c 70Ll I

c75c75

cl7

c35c37c38c39c40c4 rc\2Ct+ 3

CI{4c45cu6c47c4 8c49c50c5lc52c53c5\c55c56c5lc58c59c50c51c62c63/68

c59c70C7Ito C7 5c76c77

.1 HF MYLAR CAP.I5O PE DISC CERAMIC.OO5 MF DISC CERAMICq] MF ELECTROLYT I C CAP.4.7 MF ELECTROLYT I C CAP.IO MF ELECTROLYTIC CAP.\.7 MF ELEcTROLYT I c CAP,IOO },IF ELECTROLYTIC CAP.I OO MF ELECTROLYT I C CAP.. I HF MYLAR CAP.2.20 PF VAR. CAP.2-20 PF VAR. CAP.\7 PF DISC CERAHIC NPO\7 PF DISC CERAMIc NPO47 PF DISC CERAMIC NPOI2 PF DISC CERAMIC NPO.I PF DISC CERAMIC NPO.OOI DISC CERAHTC NPO5 PF DISC CERAHIC NPO.OOI DISC CERAMIC NPO33 DtSC CERAMTC NP0.OO1 DISC CERAHIC47 PF DISC CERAMIc NPO.005 Dtsc cERAMtc\7 PF DISC CERAHIc NPOFacto ry 0pt ionI8 PF DISC CERAMIC NPO2-20 PF VAR. CAP.

22 MF ELECTROLYTICFactory 0ptionDELETED,02 MF D I SC CERAM I C220 PF DISC CERAMIC

PARTS LIST MAGGIORE ELECTRONIC I.ABSCONTRACT NO. FSCM NO.

PLREvISIONLTR

DATE

LIST TITLE:

Hi Pro RqU ReceiverAUTHENTICATION: REV AUTH NO. SHEET

OFSHEETS

ITEM ORFIND

NUMBER

QTYRQD

QTYRQD

QTYRQD

UNITOF

MEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOMENCLATURE OR DESCRIPTION

RIR/.

R3

R4

R5

R6

R7R8

R9

Rl0RllRl2Rl3R14Rl5Rr6Rl7Rl8RtgR20R2lR22R23R24R25R26R27R28R29R30R31R32R3 3Rl4Rl5

RIR2

R3R4R5R6R7R8R9R10RllR12Rl3R14R15Rl6Ri 7RI8Rl9R20R2lR22R23R24R25R25R27R2IR29R30R3 tR32R3lR34R35

All resistors4.7K22R330 oHM5 .6r33KIK4.7KI8K100 0HM100 0HM\.7K100 0HM56 oHMIK2.2K22Kl00KIK4.7KIOK8.2Kl0K\.7K8.2KIOOK470K100 0HMIO OHMIO OHMl.2KIOO OHMl0K150 0HMI 00 0Hl'{IK

l/4 watt unless noted.

PARTS LIST UAGGIORE ELECTRONIC II.BSCONTRACT NO. FSCM NO.

PLREVISlON

LTR

DATE

LIST TITLE:Hi Pro R4U Receiver

AUTHENTICATION: REV AUTH NO. SHEETOF

SHEETS

ITEM ORFIND

NUMBER

QTYRQD

QTYRQD

QTYRQD

UNITOF

MEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOM ENCLATUR E OR DESCRI PTION

R36R37R3BRl9RAO

R4 rRq 2

R35R37R38R39R40R4lR42

\7 oHMBz OHMl.2K2.2Kl.2KFactorvIK

0pt ion

PARTS LIST MACGIORE ELECTRONIC iJSSCONTRACT NO. FSCM NO.

PLREVISlON

LTR

DATE

LIST TITLE:

Hi Pro Rl{U ReceiverAUTHENTICATION: REV AUTH NO. SHEET

OFSHEETS

ITEM ORFIND

N UM BER

QTYRQD

QTYRQD

QTYRQD

UNITOF

MEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOMENCLATURE OR DESCRI PTION

HRIHR2

LIL2L3L4L5L6l1LlLBtoLl0Lllrl?

ZIZ27.3

Zll75

HRIHR2

LIt?L3L4L5L6L7LBL9Lt0Ll IL12

ZIZ2z3Z\Z5

L0u, ro7-Hr 147Lo|^/ 107-Ht 1\7

HEL I CAL RESONATORHELICAL RESONATOR

I 0.7 MHZ 1 . F. TRANSFORHERI0.7 t4HZ l.F. TRANSF0RMERIO.7 MHZ I.F. TRANSFORMERIO.7 MHZ I.F. TRANSFORMER\55 HHZ I . F. TRANSFORMER455 I4HZ I.F. TRANSFORMER455 MHZ DISCRIMINATOROSC. OUTPUT COILO5C. OUTPUT CO I LOSC. MULT. COILOSC. MULT. COIL0s c . c0 r L.\7 UH CHOKEIOO UH CHOKEFERRITE CHOKEIOO UH CHOKEIO UH CHOKE OR \55 KHZCERAMIC FILTER

PARTS LIST HAGGIORE ELECTRONIC IABSCONTRACT NO- FSCM NO.

PLREVISION

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OFSHEETS

ITEM ORFIND

NUMBER

QTYRQD

QTYRQD

QTYRQD

UNITOF

IvIEASURE

CODEIDENT

DRAWINGOR

DOCUMENT NUMBER

PARTOR

IDENTIFYING NUMBERNOMENCLATURE OR DESCRIPTION

DID2

D3D4

QIQ2

Q3Q4

Q5

rcltc2tc3lC/{tc5

xt/x6x7XB/XI

DID2

D3

D4

QlQ2

Q3

a4a5

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xl/x6x7X8/XI

IO VOLT ZENERI N9 r 4IO VOLT ZENERIO VOLT ZENER

MRF 90 IMRF 9042N51792 N5l 702N5170

cA3o2BBcA3028BcA3o55cA3o45LM38O

Channel Crystals, First 0sc.Second 0sc. Crystal10.7 Mhz Crystal Filters

Maggi ore Electroni c Loboratory

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AND FREQUENCY RANCE4.SATMATIC PROVIDED FOR REFERENCE ONLY

$."O" NOT USED ON ALL MODELS

HI PRO R4U UHT RICIIVER

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COOE IOENT NO,

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