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Continental 816R2A through 816R4 Specifications

 

 GENERAL

 Rated Power Output:

816R-4: 27.5 KW

816R-3: 25 KW

816R-2A: 20 KW (21.5 KW max.)

 Power Consumption:

816R-4: 42 KW nominal

816R-3: 40 KW nominal

816R-2A: 31 KW nominal

(33 kW @ 21.5 KW RF output)

 Frequency Range:

88 to 108 MHz, in 10 kHz steps

 Frequency Control:

Phase Locked Loop Frequency

Synthesis from high stability master oscillator

 Frequency Stability:

+ 250 Hz

 Output Impedance:

50 ohms

 Output Connector:

31/8" EIA Flange

 VSWR:

2:1, max.

 Modulation Type:

Direct carrier frequency modulation

 Modulation Capability:

+ 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 75 kHz deviation.

 Audio Frequency Response:

+0.5 dB; flat, 25, 50 or 75 microsecond

pre-emphasis, 20 Hz to 15KHz

 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 S/N Ratio (FM Noise):

75 dB min. below +75 kHz deviation @

400 Hz, measured within a 20 Hz to 15

kHz bandwidth with 75 microsecond de-emphasis

 Asynchronous AM S/N 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 S/N Ratio

(incidental AM Noise):

40 dB below carrier; reference: 100% AM modulation,

full power @ 400Hz with 75 microsecond de-emphasis,

FM modulation + 75 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 +75 kHz deviation

 Composite Amplitude Response:

+0.1 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 7.5 kHz deviation

 SCA Amplitude Response:

+0.3 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-emphasis 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 kH#

-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:

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 ft (3048 m) with modification kit

 Ambient Temperature Range:

- 20 C to + 50C (- 4F to + 122F)

 MECHANICAL

 Size, as shown:

69" (1 75 cm) H

72" (1 83 cm) W

28" (71 cm) D

 Weight:

1962 lb (890 kg) nominal