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Continental 816R1A, 10 KW FM Transmitter
GENERAL
Rated Power
Output:
816R-1A: 10
kW
Power
Consumption:
816R-1A: 18
kW, nominal
Frequency
Range:
88 to 108
MHz, in 10 kHz steps
Frequency
Control:
Output
Impedance:
50 ohms
Output
Connector:
3%" EIA
Flange
VSWR:
2:1, max.
Modulation
Type:
Direct
carrier frequency modulation
Modulation
Capability:
:t 150 kHz
deviation
Modulation
Indication:
Digital LED
display shows true peak level of modulating signal in 5% increments
with accuracy better than +/- 2%
Exciter:
Solid-state
unit with variable output of 5 to 50 watts, and self-contained
harmonic filter.
RF Harmonic
Attenuation:
-80 dB, min.
Power Supply
Rectifiers:
Silicon
MONAURAL
OPERATION
Audio Input
Impedance:
600 ohms,
balanced
Audio Input
Return loss:
30 dB or
better
Audio Input
level:
+ 10 dBm
(6.93 volts peak-to-peak) @ 600
ohms for :t
75 kHz deviation.
Audio
Frequency Response:
:to.5 dB;
flat, 25, 50 or 75 microsecond
pre-emphasis, 20 Hz to 15 kHz
Total
Harmonic Distortion:
0.08% max.;
20 Hz to 15 kHz (Measured
with
Spectrum Analyzer.)
Intermodulation Distortion:
0.08% or
less, 60 Hz/7 kHz 4:1 ratio
FM SIN
Ratio (FM Noise):
75 dB min.
below :t 75 kHz deviation @ 400 Hz, measured within a 20 Hz to 15
kHz bandwidth with 75 microsecond de-emphasis
Asynchronous
AM SIN Ratio (AM Noise):
55 dB RMS
below carrier; reference: 100% AM modulation, full power @ 400 Hz
with 75 microsecond de-emphasis, no FM modulation
Synchronous AM
SIN Ratio (Incidental AM Noise):
40 dB below
carrier; reference: 100% AM modulation, full power @ 400 Hz with 75
microsecond de-emphasis, FM modulation :t75 kHz @ 400 Hz
WIDEBAND OPERATION
Composite
Inputs:
Balanced,
unbalanced and test
Composite
Input Impedance:
5,000 ohms,
nominal
Composite
Input level:
1.25 volts
RMS (3.54 volts peak-to-peak)
for :t 75
kHz deviation
Composite
Amplitude Response:
:to.1 dB, 20
Hz to 100 kHz
Composite
Total Harmonic Distortion:
0.08% max
Composite
Intermodulation Distortion:
0.08% max.;
60 Hz/7 kHz 4:1 ratio
Two SCA
Inputs:
Balanced or
unbalanced
SCA Input
Impedance:
50,000 ohms,
nominal
SCA Input
level:
1.25 volts
RMS for :t 7.5 kHz deviation
SCA Amplitude
Response:
:to.3 dB, 40
kHz to 100 kHz
STEREO OPERATION
Most
Stereo performance parameters are determined primarily by the Stereo
Generator used. The following parameters are influenced by the RF
system. These specifications assume that a "State-of-the-Art"
Stereo Generator is used.
Stereo
Separation:
50 dB min.; 50
Hz to 15 kHz. (60 dB or better, 400 Hz to 7.5 kHz typical)
Total Harmonic
Distortion:
0.08% max.; 50
Hz to 15 kHz. (Measured with Spectrum Analyzer.)
Intermodulation Distortion:
0.08% max.;
60 Hz/7 kHz, 4:1 ratio.
FM Noise:
- 72 dB
referenced to 400 Hz, 75 kHz deviation. Measured with 75
microsecond de-emphasize within a 20 Hz to 15 kHz bandwidth.
Linear
Crosstalk - 55 dB
SCA
OPERATION
Most SCA
performance parameters are determined primarily by the SCA
generator used. The following parameters are influenced by the RF
System. These specifications assume that a "State-of-the-Art" SCA
Generator is used.
Crosstalk, SCA
to Main and Stereo
(67 kHz and/or
92 kHz):
- 60 dB, SCA
deviation 5 kHz, Main 75
microsecond
de-emphasis
Crosstalk,
Main and Stereo to SCA
(67 kHz or 92
kHz):
- 50 dB, Main
and Stereo 75 kHz deviation; SCA reference deviation, 5 kHz and 200
Hz modulation; SCA de-emphasis, 150 microsecond
Crosstalk SCA
to SCA
(67 kHz and 92
kHz):
- 50 dB, SCA
reference deviation 5 kHz and 200 Hz modulation frequency;
de-emphasis, 150 microsecond
ELECTRICAL
Power Source:
200 to 250
volts ac; 60 Hz, three phase; available transformer taps are 200,
210, 220, 230, 240, 250 volts ac; 50 Hz available on request.
Permissible
Line Voltage Variation:
:t 5% (each
phase voltage variation: within 5% of the average of all three
phases). Filament regulator:
+/- 1 % of
optimum
OPERATING
ENVIRONMENT
Operating
Altitude:
7,500 ft.
(2286 m) standard; optional to 10,000 It (3048 m) with modification
kit
Ambient
Temperature Range:
-20°C to +50°C
(-4°F to + 122°F)
MECHANICAL
SIZE,
as shown:
69" (175 cm) H
72" (183 cm) W
28" (71 cm)
D
Weight:
1875 Lb (836 kg) nominal |
