The
330D was the ultimate development of Scott's stereo AM/FM tuner line, designed
to receive stereo AM/FM simulcasts. The switching provisions were much improved
over those of the 330C, to provide more flexibility for the reception of AM/FM
simulcasts. The slide switch was changed back to the configuration it had on
the 330B, to allow switching the tuning meter between the AM and FM tuner
sections, without disturbing reception. The power switch was converted to serve
as the mono/stereo switch, in addition to switching power. In addition to
positions for power off, monophonic operation, and stereophonic operation, it
had a fourth position for stereo phase reverse. The phase revere position was
useful in receiving stereo AM/FM simulcasts, to correct for reversed phase at
one of the transmitters. In the 330D, a 6CN7 was used as the AM detector,
replacing the 6AL5 in the 330C. The 6CN7 provided the extra triode section
needed to implement the stereo phase reverse function.
H.H. Scott 330D
Features:
Silver
Plated Front End
FM Cascode
RF End
Multiplex
Output Jack
Meter Tuning
Indicator
Stereo Phase
Reverse Position
Planetary
Tuning Mechanism
Wide Range
AM Detector
AM Loopstick
Antenna
Tape
Recorder Outputs
Output Level
Controls
Separate AM
& FM Sections
Automatic
Gain Control
330D
Technical Specifications
Sensitivity
for 20 dB Quieting : 2 μV
IH FM
Sensitivity: 2,5 μV
FM Detector
Bandwidth: 2 mc
FM IF
Stages: 2
FM Limiting
Stages: 2
Harmonic
Distortion on FM: 0,8%
Capture
Ratio: 6 dB
Am Bandwidth
Position: 3
Output
Voltage for 100% Modulation: 4 - 6
Total Hum
and Noise: 66 dB (below 1 x volt)
Dimensions: 15½ x 5¼ x 13¼ inch (accessory case)
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