Specifications

IMAGE RESPONSE
80dB
RF INTERMODULATION
65dB
STEREO SEPARATION
45dB at 100Hz
50dB at 1000Hz
35dB at 10,000Hz
SCA REJECTION
65dB
AM SECTION
SENSITIVITY
20uV External Antenna Input, 50 ohm generator
SIGNAL TO NOISE
50dB at 30% modulation
60dB at 100% modulation
HARMONIC DISTORTION
.5% Maximum at 50% modulation
FREQUENCY RESPONSE
50Hz to 6kHz NRSC
ADJACENT CHANNEL SELECTIVITY
45dB Minimum IHF
IMAGE REJECTION
75dB Minimum from 540 to 1600kHz
IF REJECTION
68dB Minimum
GENERAL INFORMATION
AUDIO OUTPUTS
Fixed: 1.2V RMS at 100% modulation
Variable: 1.2mV to 1.2VRMS at 100% modulation
POWER
120VAC at 10 watts
SEMICONDUCTOR COMPLIMENT
28 IC's
37 Transistors
8 Varactors
53 LED's
74 Diodes
FRONT PANEL INFORMATION
TUNING KEYBOARD
Buttons 1 thru 8 are for recall of the stations in the
electronic memory. The enter button is used to put
a station into memory. SCAN and are to
electronically search up or down the band for the
next station.
To place a station into the electronic memory you
must first tune to the desired station by using the
tuning knob or the SCAN or buttons, press the
ENTER button, then within 5 seconds select and
press the number you wish to represent that
particular station. Upon release of the button the
station will be memorized. This process is repeated
for each of the 8 memory locations on both FM &
AM.
You may change the station assigned to any of the
memory locations simply by tuning to the new station
with the tuning knob or SCAN, then following the
ENTER procedure described above.
MODE KEYBOARD
The FM and AM buttons put the tuner in either the
FM or AM mode. When FM is selected the audio
processor circuits automatically switch to STEREO
operation and when AM is selected MONO operation.
To change the audio processor mode simply press the
desired button. Note that full stereo operation is not
possible in AM. The unit does not contain an AM
stereo decoder.
The SEARCH button starts the automatic 5 second
audition of each of the preset stations. It operates in
either FM or AM. The SEARCH mode may be
canceled in 2 ways, by pressing the SEARCH button
again or by making some other station selection.
DISPLAYS
In the CENTER section of the display window are
four LED digits that display the frequency to which
MR7083 Product Preview/Page 3
MClNTOSH LABORATORY INC., 2 CHAMBERS STREET, BlNGHAMTON, NEW YORK 13903