ST-11CGJN ,. _ and FACTS about 455 EISENHOWER LOMBARD, ILLINOIS 60148 with +2 Extended Range MODEL MANUAL OWNER'S If an extension power cord is used reqularly it would be wise to invest in the 3 wi re type, which has (or can be converted to) a receptacle plug with a ground connection. Any local hardware store or electrical supply store will be able to help you select the proper cord. To use this protection feature simply Insert the power cord into a 3-way adapter (not supplied) and insert the adapter into a suitable wall receptacle or extension cord. The small wire attached to the adapter is the ground wire which is to be connected to any known ground source such as un painted cold waterpipe, gas line, or radiator. As most house hold receptacle boxes are grounded, the wire from the adap ter can be attached to the screw holding the receptacle faceplate. Simply loosen the screw and slide the "C" shaped connector behind the screw head and retighten. For your protection this device is equipped with a 3-prong grounding type power supply plug. The third round prong is a connection which when used properly will lessen the possi bility of accidental electrical shock. CAUTION: ST·l1 DOMESTIC MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 _ 9 + 2 Extended Range Feature 7 16 Scientific Notation Schematic and Parts List 15 _ Replacement Parts 17 14 . . . . . . Range Chart Publications 11 __ Piano Tuning _ 13 _. . 9 Accessories TABLE OF CONTENTS . 7 Organ Tuning Operating Instructions 3 4 How The Tuner Works Introduction 5 Description _ 6 ealibration Band and Orchestral Instruments . .. . . . . . parts. Conn pioneered highly accurate tuning devices many years ago with the introduction of the STROBOCONN. weaken. household power supplies commonly used in North America. Wide acceptance of the Stroboconn led to the development of the light-weight Strobotuner which for years has been the standard of the industry. or create heat. There are no tubes to burn out. It Is actually a digital computer that maintains its accuracy indefinitely using a small amount of electrical power. a special export model must be used as serious damage and erroneous readings will result. Modem transistors and Integrated circuits have led to this advanced model Strobotuner-the most reliable and accurate machine yet produced. Your new Strobotuner is a result of many years of research and experience in bUilding electronic tuning devices. The Strobotuner is assembled with solid-state . As a result of the sophlstlcated circuits the Strobotuner Is accurate within one cent (1/1 DOth of a semitone). SOME FACTS about . 60 Hz. If the tuner is to be used. C. G.3 Your new model is built with the most modern and efficient com ponents available. In Europe or other areas where different voltages and power fre quencies occur. The ST-11 is designed for use on 120 volt. When traveling overseas with the ST-11 local power availability should be checked to deter mine compatibility with the ST-11 tuner. The Strobotuner is de signed with nine integrated circuits assuring many continuous hours of accurate use. . The disc is made of plastic which light will show through. This same effect causes the wheel to appear to slowly rotate for ward or even appear motionless when the wagon is going "full speed" ahead. If the tone is flat the lines in the disc will appear to rotate to the left or counter-clockwise. When everything is exactly synchronized. The stroboscopic ef fect is responsible for the apparent backward rotation of objects such as wagon wheels seen in motion pictures when the wagon is clearly moving forward. Neon lamps are Your Strobotuner operates in a similar manner only the "wheel" in the tuner is a motor driven disc like the one shown in figure "A". The neon lights actually go off and on (too rapidly for the eye to see) at exactly the same frequency as the tone played into the microphone. The Strobotuner works on an optical illusion known scientifically as the stroboscopic effect . If in tune the lines will appear to stand perfectly still . (neon lights and the spinning disc) the strobo scopic effect is shown as a semi circle of motionless lines around the disc. Fig. A HOW THE TUNER WORKS The stroboscopic effect has remained over the years the most convenient and accurate method for visually dis playing musical intonation. placed behind the spinning disc and are the source of the orange glow when the tuner is running. If the tone is sharp the lines will appear to revolve to the right or clockwise.so the name STROBOTUNER.A synchronous motor turns the disc at 12 different speeds depend ing on the note setting of the SELECTOR KNOB. Connect the power cord to the plug-in on the back side of the tuner. They must go back into this small area in the same Operating your Strobotuner is simple. microphone stand. If you wish to use the microphone stand. Pull the storage compartment door open and take out the cords and microphone. micro phone cord. 5 Insert the microphone plug into the receptacle on the front of the tuner. merely insert the microphone into the flexible holding clips on the top of the stand similar to figure B. 8 POWER CORD PLUG ·IN STORAGE COMPARTMENT DOOR FUNCTION CON TRO L -+--+1- CENTS KNoe AN D POINTER -'1\-\---+-1+. The storage compartment contains the microphone. a little time should be invested in becoming familiar with it. and power cord. MODEL IDENTIFICATION CORD STORAGE -tt--f1I+---jJ-+ M ICROP H0 NE & OPERATING INSTRUCTIONS MICROPHONE PLUG·IN KNOB SE LE CT 0 R --tJ1I--+-++--= PI LOT LI GHT -+fI--+-+t. plug. way as they were packed at the fac tory. Developing the habit of following the sequence of instruc tions below will insure the proper op eration and calibration... Notice how all of these parts fit neatly into the compartment.0 ~==t 'Jr r~~~~~~. And to get the most accuracy and best operation from the machine.CARRYING HANDLE . Connect the other end of the power cord to a source of electrical power suitable for your model tuner.IN 01CA TOR WINDOW Look at figure "B" and become famil iar with the names of the controls.Fig. 5. When cali brating with the function knob pointing to CAL a semi-circle band of lines should appear in the band labeled number 2." If the fines are rotating Since the tuner has all solid-state cir cuits. Doing this turns the tuner on and sets the machine for calibration. +2 3 4 5 6 7 8 9 10 Fig.Fig. 4. 6. Sixty seconds after FUNCTION KNOB is turned on. the machine is fully stabilized. the lines should appear motionless.Note : Due to the great sensitivity of the Strobotuner the word "motionless" suq gests that the lines should appear as stationary as possible-a very slight move ment is normal. If it is not. Notice to the left of center on the win dow that the various bands where tuning will be indicated are numbered 1. OFF ' ~. check the power cord connections and the source of electricity.. no lengthy warm up is neces sary. Study the in dicator window in figure D.MAL FUNCTION CALIBRATION . If the tuner is in perfect calibration. 2. D NORMAL 5 4 3 2 1 It is important to calibrate the Strobo tuner before each use. 7 and 8. C -J/-+2 6 . 3. Turn the FUNCTION KNOB to the CAL position as in figure C. Do not be concerned if the disc starts spinning slowly at first-this is perfectly normal. Be certain that the pilot light is on. and the calibration procedure can proceed . The disc seen throuoh the 'ind ic ato r window should be rotating. For conven ience we will refer to various musical pitches as C 4 . It is logical that an octave below middle C is C 3 . All semi-tones of C 5 through B 5 will be iound on the num ber 5 band of the tuner. the reference pointer connected to it may not be pointing to zero as in figure F. You will find that referring to this chart often will help you in learning the note symbols if they are new to you. IMPORTANT: To realign the pointer to zero without disturbing the calibration simply hold the knob perfectly still with two fingers and with one finger of the other hand move the pointer adjustment lug until pointer is straight up and aligned with zero. A 4 . The octave above middle C is C 5 . Make a mental note that "middle C" can be also stated as C 4 . If lines are rotating to LEFT turn CENTS KNOB also to left (coun terclockwise). All twelve semitones of octave C 4 through B 4 will be found in the number 4 band of the tuner. two octaves below middle C is C 21 etc.Make it a habit to always calibrate the Strobotuner first before tuning. ABOUT NOTATION . the line pattern appearing in the window will still be motionless and you are now ready to operate the ma chine for tuning. (clockwise) until the lines stop rotating. G I? 1\MAL OFF. In turning the CENTS KNOB right or left.jI-+2 FUNCTION After calibrating. two octaves above middle C is C 6 . USING THE TUNER Engineers and musicians agreed years ago to use a system showing which musical octave each was talking about. Happily this system is in uni versal use today and is the simplest and most exact way to refer to musical pitch. If the knob itself has not been moved. FJt 2 . Fig . turn the function switch to NORMAL position as in Fig ure G. turn the CENTS KNOB figure E also to the right.. E 7 Refer to the bands where the note will be seen on the tuner window . Now look at the SELECTOR KNOB figure H. Fig. to the right (clockwise). from here on in this book. etc. You will get a better under standing of this notation and how it relates to music by looking at the range chart on page 14. and C 3 in band 3. C I will appear in the first band (number 1). In any case turn the GAIN CONTROL knob just enough to produce a steady. The knob itself has all twelve semi tones marked on it. A little practice in finding notes of the piano on the tuner will help in familiarizing you with the Set the selector knob to the note and index C as in figure H. I Fig . For example. The amount that the GAIN CONTROL KNOB must be turned to produce a steady light depends upon how loud the tone is . while around the outside of the knob are index lines. All octaves of E will now show on the tuner . If the tone is distant or very faint the knob will have to be turned to a higher number. etc. Direct this tone toward the micro phone turning the GAIN CONTROL clockwise so that the disc lights up steadily when tone is produced.8 What about another note such as E? Turn the SELECTOR KNOB setting so that E al igns with the C index (Figure I). Produce a concert C from any sou rce such as a musical instrument or tuning fork . Any C on the piano keyboard will be indi cated with this setting. Fig. We w ill be concerned with the " C" index now-the others are explained later. and since the piano is in the key of C we use the " C" index. Cor rect intonation is shown when the band of lines stands motionless. clear pattern. The actual intonation of any note will be shown as a band of Iines in an appropriate band in the window. C 2 will appear in band 2. H . Strobotuner so that it can be quickly and accurately used. the note we wish to tune is C on the piano. TRANSPOSING INSTRUMENTS . 2 EXTENDED RANGE 9 Your Strobotuner has an extraordinary feature built into it. Eb. Figu re J shows the SELECTOR KNOB setting for the trum pet (and other Bb instruments) when tuning the written note C. You may have noticed that extremely high notes ap pearing on band 7 and 8 are more difficult to read than notes appear ing on band 4 or 5. other index marks around the SELECTOR KNOB are pro vided for these instruments. the Bb index is used to set the SE LECTOR KNOB. and F. Fig . J Many wind instruments are of the transposing type-that is . There are three com monly used transposing keys : Bb. L Figure K shows the selector knob set ting when tuning the written note C for alto and baritone saxophone (and othe r Eb instruments). To help you read band 7 and 8 more clearly a special setting of the FUNCTION knob is used. Using the + 2 you will find that reading of notes normally found in bands 7 and 8 will be much easier to + Obviously if some other note than C is to be tuned the selector knob must be turned to the proper note AND in dex for that instrument. they do not produce the same p itch that is read from the staff. called + 2. K When tuning a Bb trumpet for example. This setting Fig. This is due to the very fine lines printed on the outside edge of the spinning disc compared to the thicker lines toward the center of the wheel. Figure L shows the selector knob set ting when tuning the written note C for French horn in F (and other F instru ments).Fig. will show all octaves of the written note C produced by the trumpet. To save you the mental process of transposing everything to C before you use the tuner . " -+2 FUNCTION II . . M OFF ' . when using the + 2 set ting . when tuning notes normally appear in band 7 turn the FUNCTION knob setting. notes normally read in band see as they will be seen in 6. Your experimenting with notes comparing patterns with and w ithout + 2 will quickly give insight into this important feature. etc.two bands lower. .. See figure M. Special + 2 guide numbers are pro vided on the Strobotuner window to the right of center. So.MAL Remember.band 5 and that would or 8 simply to the + 2 10 Fig. You can see that these numbers indicate which octave is ACTUALLY being shown when using the + 2. The notes normally read in band 8 will appear two bands lower in band 6. Of interest to the hobbyist.. and recording equipment en thusiast is that the + 2 feature will allow the Strobotuner to accurately indicate frequencies up to 31. pipe organ tuner. 7 will appear in band 5 .600 cycles-beyond the range of normal human hearing! This is accomplished by setting the function knob on + 2 and reading bands 7 and 8. 6. This is due to the complex tone of the piano string. But the human ear . that the Strobotuner is calibrated and ready to use. "Stop" one appropriate band of lines by turning the CENTS knob 4. C b • and C 7 ) were exactly twice. As you know. assume the octave C 4 to 8 4 is our temperament octave using A-440 standard. Tune chromatically up ward starting with C 4. PIANO TUNING . If you wish to study the technique of tuning pianos with the Strobotuner we suggest that you obtain the specially prepared manual. Admittedly. or 8 IGNORE THEM FOR NOW UNTIL THE TEMPERAMENT OCTAVE IS TUNED . Sound tuning fork or other sound source 3. the lesser tones (C s. This is not the case in the piano tone. and eight times the tone of C 4 . most pianos with per fectly tuned octaves do not sound well. IF YOU SEE PAT TERNS IN BANDS 5. The popularity of the Strobotuner is due to the large number of piano technic ians who find that the Strobo tuner can increase their speed in learning to tune accurately and is a handy reference to maintain consist ency in their work. C b t C 7 . Ordering information will be found on page 17. four times .As an example. are quite lifeless and produce aural " beats" when the octave is struck.say C 4 is sounded. The reason for this octave phenomenon is that the piano string produces several tones simul taneously other than the one it is tuned to . 11 The job of the meticulous piano tuner would be greatly simplified if when sounding C 4 . Watch only band 4 which will indicate all of the 12 notes in this octave . It is not a course in piano tuning as there are many complexities to tuning which ale beyond the scope of this manual. C b . As you pro ceed from C 4 to C~4' you must turn the SELECTOR switch to Ct using the C index. in addition to C 4 .s by far the most prominent to the ear. Since C 4 to B 4 is your temperament octave you should adjust the string tension so that each one of these notes "stops" the pattern in band 4 only. Obviously the switch must be appropriately set each time a new note is to be tuned . Turn function knob to NORMAL position 2. Mute all but one string per key so that only one string sounds when key is struck. C 4 . "Notes on the Use of the Strobotuner in Piano Tuning". Hold the CENTS knob stationary and reset its pointer to "0" Your Strobotuner is now calibrated to the frequency of the sound source and tuning may proceed. INHARMONICITY Go back and recheck each note of the temperament octave until you are satisfied that one string of all 12 notes in this octave "stops" the pattern in number 4 band on Strobotuner win dow. one string . If the piano is to be tuned to A-440 use the calibration procedure given on page 6.particularly a sensitive musician's ear will hear C s. 7. Make certain that the " b reak " or change in string construction is not in this octave. This string produces other notes such as C s. Assume also Choose your temperament octave with care. The following procedure is intended to fam iI iarize the experienced piano technician with the Strobotuner. As the For example. and C 7 also. TEMPERAMENT OCTAVE If the piano is to be tuned to a stand ard such as a tuning fork simply: 1. TUNING THE BASS STRINGS This operation of the + 2 feature is explained in detail on page 9 of this manual. Proceed downward through At 3 . Tune the 8 3 string until the number 4 band pattern is motionless.8 s notes with the same respective setting. . Wound bass strings have a higher harmonic con tent than do treble strings.8 4 octave a pleasant soundinq interval. However.C s oc tave w ill not have unpleasant "beats". Wound bass strings will produce a definite change in the inharmonicity as seen on the tuner. and adjust the tuning pin for that string until the number 5 pattern stands still. your solid state model has a number 8 band making a practical C a to 8 a range. You must decide which of these bands is the most pronounced and use that one as a reference. This extra band allows C a to be tuned directly. A 3 . Use the same technique of striking the note an octave below that which you are tuning . And the + 2 feature allows you to see the C a and C 7 . resetting the tuner CENTS knob and pointer each time. Having set the temperament octave you can now tune the C s .8 6 and C 7 8 7 octaves. tained from the lower note.12 Continue your tuning procedure up ward throughout the C 6 . Strobotuner will show.and how much is present. using the number fou r band pattern to tune to . It is this physical trait of the piano string (inharmonicity) that makes it neces sary to "stretch " octaves to make them pleas ing to hear. With the Strobotuner it is simple to do this. Tune all of the octave C s . In any case the Strobotuner will show when inharmonicity is pres ent . Some of the lower notes will show very strong patterns in bands two or three octaves above the note being tuned. Then mute out all but one string of C s. observe the band 5 in the tuner window and you will probably see a pattern of lines rotating slowly clockwise .8 4 notes an octave below. Then strike the C s .8 7 pattern more clearly. You wilt have to decide which band you w ish to refer to in the octave stretching process. Th is procedure will compensate for any inharmonicity in the 8 3 string and will make the 8 3 . the higher C's are SHARP when C 4 is sounded . Earlier model Strobotuners had an ab solute high range of 8 7 . TUNING THE HIGHER OCTAVES You will find that the degree of in harmonicity varies greatly between octaves.. If this is the case you can be certain that inhar monicity is present and you will have to sharpen C s so that the C 4 . ad justing tuning pins to stop the pat terns in band 5.8 s strings. Simply look at the band of Iines an octave above the struck note to set the tuner. A good deal of personal expertise and WOUND STRINGS Make sure th~t the CENTS knob and pointer are returned to zero setting used for the tuning standard and the function knob is on NORMAL. strike it. Strike C 4 of the tempera ment octave. The tuner SELECTOR knob should be set on C. As your speed increases you will probably omit resetting the Strobotuner CENTS knob pointer and simply read direct. Then adjust string tension of the note you wish to tune from this setting ob Merely strike C 4 and adjust the CENTS knob clockwise until the num ber 5 pattern stands still. However. G~3' etc. After tuning the treble strings you have gained enough practice in using the Strobotuner so that tuning bass strings below C 4 will be faster.8 s notes by striking the C 4 . In contrast to piano tuning. 0.thus eliminating the need of the micro phone. as the amount of discrepancy is small. 80 You will quickly learn the best micro phone placement to obtain the clear est pattern. these three keys can be tuned the same as the other bass strings by striking the key and watching the Strobotuner to indi cate which upper band has the strong est pattern . tune the single strings. A patch cord can be devised to make a direct connection between the organ speaker and the Strobotuner . Ao . Then simply tune the string to "stop" that pattern. The patch cord hook-up has the additional advantage of eliminating any room no ises which would inter fere with the tuning process. This procedure saves switching the tuner back and forth from one note to the next fre quently. the Strobo tuner can be used if you w ish.A~o..the initial sound or the sustained pitch.-then you should use the number 5 band when adjusting the string. if when tuning C 2 l band num ber 5 pattern is very pronounced more than band 3 or 4. Usually this decision is easy. the organ tuner does not need to be concerned with inharmonicity and the process of "stretching" octaves can be ignored .e. However. TUNING ORGANS Most piano technicians like to mute out all of the strings at once . i. TUNING THE UNISONS . and then the unison strings. You may find that in the high strings where the sustaining time is short. OTHER THOUGHTS ON TUNING The lowest three notes on the piano are below the direct range of the Strobotuner. Tuning electronic organs is a simple matter using the Strobotuner. You will have to determine by ear which part of the tone is the best in tune . As a train ing and reference device the Strobotuner has few equals. In all cases the service manual for the par ticular organ must be consulted for the precise tuning the instrument was designed for. judgment must be used here. etc . If you are new to the piano tun ing profession you may want to check your ear with the tuner. striking the key in rapid suc cession will produce the best pattern. tune all octaves of C then reset tuner to C#. Unison strings are usually tuned aurally. Remember it is the stronger octave harmonic which you r ear hears and it is this same harmonic which produces the clearest Strobotuner pattern . For example. If the organ is of the tube type a 10 or 15 minute warm up time should be allowed prior to tuning. 13 Most people who tune organs prefer to tune all octaves of the same note. In using the tuner you will immediately discover that notes are flatter shortly after being struck. Use as your tuning reference the band which shows the clearest pattern. however. ii 3 ~ v !J.f .. .. i ~ . C2 D2 E. ~ " :0 ~ t6 ~ § " ::: ~ ! . ! .t- l .. ! i . . F2 G 2 A 2 82 C3 Dl El Fl Gl A3 8l C.~ 1.I lI=. E• . ..I... ~ t1 " ~ ~ ~ 11 0. 10ARD 'MeEIS lK' :)Ml 0' ~ .h SAXOI'HC>Nf TO SAt Ol'HONf. ...I-... mA. .:~ S . >..ss :: :x I ..~~ >.E: :: ::: II ~ Il ~ ~ II 17 ~ ! 8 .. ! ~ : ~ ~ I ~ rOt=. • • • • :: ii ~ C. 8.Cl'tiO 1 Alii • SOfL'HO Q. 0 8.. F. £: ~ r: :! ~ < SOPtIANO VOKI ALIO VOKl Tt:NOR VOf(E. 14 E..t.: ~ ~ ~ Ii I. t 3 E " •• " ! .f I-.. D.r: E 3 l 1- ~ .t- I-.NO . .I- I-.I-.l (J. A. 8 S! = : " " ~ ~ ~ 56 " ~ 5 i Zl . 6 lASS Ell \/IOUN VIOlA ruIA!""1 .A_' ALIO CLAIl1'c. 8. ! . flUfGELHOll AlTO IMELl. ~ II 2 II II 0 £ a :...A:...::... h II 1 . •• ~ :: - ... D.. i G. ~ ! ~ ~ i ::I'" .I .t- -~ ~ Itt- PICCOlO flUTE F. :. 1INOll SAXCl'ti~ 'ON£ SAXClrHONlSSSAXOI'HONf. Fe G.t! r:: •r! l .. .. A..f. " " •• ~ E . .I- t- ft.t-. ~ KJI us l£m .0 J I I i 1\ 0 I- ~ ~ ~ :: ~ .. .. II 2 :: 0 " i 0 II ... " •• " = .t-il-4 . 1= 1= 1= I~ 1~1= 1 r-T_AN AIIP ACCOlDlON AI "A~ RANGE CHART FOR BAND AND ORCHESTRA INSTRUMENTS .I-. Be C7 D7 h . E. ~ :0 .. B7 Ce I ~ ~ q I-I- I- I--f-" ff . BARITONE VOICE Aj OKE 1E\J ~ .I-.:. G. :. .. . = ~ ! .. TlUhftT. 114 C5 Do Eo F5 G S As 85 C. J • COItN£T..· Yl . ~ ASS TIJI A ( ".. Go .f . ~ 61 61 ~ ~ ~ g 0 ~ ~ ~ ~ 71 0 :: 71 7' 16 i i .. A.. ~ ..f .! " " . . I..~ ~()( HGUSH'He N ~I4ONIA'~ a .I- l - .I . i 0 f.. Cover is black grained vinyl. Conn. A full repair facility is maintained by C. G. Slips over the carrying handle #9999 . $12. power cord. Made of heavy expand ed vinyl reinforced with heavy stitching and extra material. A rugged cover w ith heavy stitching and reinforcements. Pockets are large enough to carry microphone. $26. where Strobotuner repairs are done. 3 large pockets-2 with snap flaps-one large expandable pocket with zipper. Slips over Strobo tuner in seconds #8882-3 . We strongly urge SERVICE & REPAIR Front you to return the instrument to this facility if any repairs are necessary. Front of cover has rigid panel built in to protect viewing window and front knobs. . . Back DELUXE "ROADIE" COVER A must for the tuner that travels. service could be necessary. Complete with sewn-in holder for identification card . and a lot more .The solid state circuitry used in the Strobotuner is as reliable as modern manufacturing techniques permit. The Conn Corporation reserves the option to avoid any warranty claims where repair to a Strobotuner under warranty is attempted by any person not employed by the Conn Corporation. How ever.95 PROTECTIVE COVER An ideal accessory to protect your Strobotuner.. 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LED Capacitor 250 UF 15V Capacitor 40 UF 75V Capacitor . 16P Integrated Circuit 74121 Integrated Circuit 7476 71521-160 71667-1 72182-2 72232-2 72232-3 72314 71521~130 72186-2 59618-1 59807-1 59970-13 59970-14 70534-1 71497-12 71497-111 71552-1 71681-1 72326-1 72327-1 72328-1 72329-1 72521-1 43743 45223-1 52041 55162 55162-1 55177 58187 58557 59518-1 71521-3 71521-7 71521-21 71521-36 71521-38 71521-41 71521·42 71521-46 71521-48 71521-50 71521-63 71521-68 71521-74 71521-90 71521-101 71521-102 71521·103 71521·104 71521-105 71521-113 Lamp . Power Transistor NPN Transistor PNP Transistor NPN 4923 Light Ampl itier Generator Board Matrix Board Switch.22 Meg Resistor . "Function ".6 MFD 1OOV NP Resistor 100 Ohm 1/2W Resistor 47K 1/2W Resistor 15K 1/ 2W Resistor 1K 1/2W Resistor 1K 1/2W Resistor 180K 1/ 2W Resistor 390 Ohm 1/2W Resistor 10 Ohm 1W Resistor 2. 100 Ohm Plug . Motor Lamp NE 024 Knob.PARTS LIST Plate Mounting S Plate Mounting L Fuse. Transistor Clip.7K Resistor 820 Ohm Resistor .7K 1/2W Resistor 5.5K Resistor 1.047 UF 100V Capacitor 100 MFD 50V Capacitor 100 PF 100V Capacitor 12 PF 500V Capacitor 10 U F 20V Capacitor 50 U F 6V Capacitor 20-20 M F 250V Capacitor 1500 MF 60V Capacitor 2000 M F 15V Capacitor 820 PF 500V 5% Capacitor 5.2K Resistor 100 Ohm Resistor 47 Ohm Resistor 18K Resistor 2.C. 3 Wire With Plug Disc.3 K Resistor 4. Off/Norm/Call + 2 Socket. Selector Window Dial Front Panel Microphone . Recessed 3P Hub Nut. Function " Knob. Scanni ng Cont rol 500K Jack Potentiometer. Illinois 60148 Phone: 312 932-5580 59689-10 59689-10 59689-11 59689-12 70107-3 71119-2 71119-4 71226-1 71226-4 71226-5 71411-2 71411-13 71443-102 71657-2 71687-101 71719-10 71819-1 71963-1 72079-1 72079-3 72079-5 72090-2 72091-1 72092-1 72093-1 72097·2 72097-3 72097-4 72101-2 72179-1 72179-2 72181-1 72185-1 59616~4 43633 44986 48446-2 50903-2 50357-6 55015-9 55052-4 56242-2 56542-101 57809-2 57810-2 57824-3 57828-3 57829-6 57874·101 57874-102 58691-5 59292-2 STROBOTUNER (SOLID STATE) .15 Meg Resistor 4. Window Transistor PNP Cover. Order above parts from Strobotuner Service Dept.6V Insulator..7 Ohm 1W NOTE: All Resistors IJ4W Unless Stated Otherwise . Escutcheon Transistor NPN Transistor NPN Rectifier 1A 50 PIV Rectifier 1A 200 PIV Rectifier 1A 600 PIV Transformer. Zener 5. Zener 12V 1W Diode. Lombard. "Selector" Knob. I. .10 Meg Resistor 47K Resistor 27K Resistor 10K Resistor 1K Resistor 470 Ohm Resistor 3. I.7K Resistor 3. Pigtai I Power Cord. "Gain " Knob. 14P Socket. 455 Eisenhower. "Cents" Control Motor Diode GP Diode GP Transistor NPN Transistor NPN Transistor NPN Diode.10 UF 100V Capacitor .2K 2W Resistor 1K Resistor 10K Resistor 100K Resistor .2 Meg Resitor 4. . C ONN ..