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THE McINTOSH MR 73 SOLID STATE FM/FM STEREO-AM TUNER

Price $1.25

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Summary of Contents for MR 73

Page 1: ...THE McINTOSH MR 73 SOLID STATE FM FM STEREO AM TUNER Price 1 25...

Page 2: ...h instruments at normal service rates To receive the free service under the terms of the SERVICE CONTRACT the SERVICE CONTRACT CERTIFICATE must accompany the instrument when taken to the service agenc...

Page 3: ...Lights when station is transmitting stereo pilot carrier for stereo broadcasting SIGNAL STRENGTH Indicates relative signal strength MODE SELECTOR Select from AM broadcast stereo FM broadcast with Auto...

Page 4: ...ag and the mounting template at hand The PANLOC professional mounting design eliminates the need for any shelf or bracket to support the MR 73 It is completely supported by its own mounting brackets T...

Page 5: ...template If necessary loosen the screws and push the brackets into alignment and retighten Insert the power cord through the opening Care fully slide the MR 73 into the opening so the rails on the bot...

Page 6: ...ENNA An unbalanced 75 ohm antenna can be con nected to the MR 73 A type F connector is used to connect the 75 ohm coaxial cable to the back panel FM ANT 75 input A VHF TV antenna is often effective wh...

Page 7: ...articular type of AM antenna used EXT position is for a conventional antenna usually of the out door type from 50 to 150 feet in length LOOP position is for the built in Ferrite Loopstick ANTENNA CONN...

Page 8: ...ength of the signal as received from the an tenna The higher the indication the stronger is the signal FM TUNING METER An FM station is correctly tuned when the meter needle is in the black area of th...

Page 9: ...rn the tuning knob to the desired station The SIGNAL STRENGTH meter will indicate the relative strength of the particular AM station being received Adjust the VOLUME control to desired listening level...

Page 10: ...lower distor tion a special matching transformer has been designed to interface the FM RF to the FM IF amplifier This matching transformer consider ably enhances the linear phase characteristics of th...

Page 11: ...erload protection against strong local stations than can be obtained with conven tional bipolar transistors The AM RF mixer is also a dual insulated gate MOSFET The use of MOSFET s in the RF amplifier...

Page 12: ...s RADIATION FCC requirements STEREO SEPARATION 35 dB at 1 000 Hz STEREO FILTER d B noise reduction STEREO INDICATOR Front panel multiplex stereo light activated by 19 000 Hz carrier only SCA FILTER 50...

Page 13: ...00 1 V 1 V 10 V 100 V 1mV 10mV 100mV dB 0 10 20 30 40 50 60 70 HARMONIC DISTORTION 1 2 8 4 0 20 100 1000 10000 20000 FREQUENCY IN HERTZ HARMONIC DISTORTION IF AMPLITUDE RESPONSE 10 20 30 40 50 60 70 R...

Page 14: ...Block Diagram 13...

Page 15: ...McINTOSH LABORATORY INC 2 CHAMBERS ST BINGHAMTON N Y 13903 607 723 3512 Design subject to change without notice Primed in U S A 038 448...

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