Transcom

 

Continental 317C-2

 

Carrier power:

Rated 50 kW

Capability 60 kW

Power reduction 25 kW or 10 kW

 

Modulation:

High-level screen-grid/impedance modulation

 

Emission:

A3

 

Frequency range:

Any single frequency 535-1620 kHz

 

Frequency stability:

5 Hz

 

Audio input:

+ 10 dBm + 2.0 dB at 100% modulation

 

Audio response:

+0.5dB, 1 0 Hz to 7500 Hz; 1.5dB, 15,000 Hz; ref. to 1 000 Hz; at 70% modulation

 

Phase response:

+ 20 from 10 to 1,000 Hz, and phase linear to 30 kHz with output lagging 45 at 15 kHz

 

Audio distortion

less than 2.5%, 20 to 10,000 Hz at 95% modulation

 

Intermodulation distortion:

3.5% at 90% total modulation by SMPTE test method using 60 and 7,000 Hz in 4:1 ratio

 

Carrier shift:

2% or less at 100% modulation

 

Tilt and overshoot:

Clipped sinewave:

3% variation in modulation percentage using 6 dB symmetrical clipping, 30 to 10,000 Hz at 90% modulation

 

Squarewave:

5% variation in modulation percentage, squarewave frequencies from 30 to 7,500 Hz at 60% modulation

 

Modulation capability

100% continuous at any frequency 20-10,000 Hz + 125% positive peak with asymmetrical input

 

Noise unweighted:

-60dB below 100% modulation

 

Spurious & harmonic emission:

- 8OdB

 

Output impedance:

40 to 300 ohms as specified by customer

 

Power source:

46OV, 3 phase, 50/60 Hz, other available by special order

 

Permissible combined voltage variation:

+5% voltage, +2.5% frequency

 

Power factor:

Approximately .95

 

Overall efficiency:

better than 60% at any depth of modulation

 

Altitude:

7,500 feet (2286 meters) higher by special order

 

Ambient temperature:

- 4 to 122F (-20 to 50)

 

Cooling:

transmitter is air cooled

 

Size:

transmitter is 144" wide, 54" deep, 78" high (365.76 CM wide, 137.16 CM deep, 198.1 CM high) plate transformer enclosure is 24" wide, 46" deep, 72" high (60.96 CM wide, 116.84 CM deep, 183.2 CM high)

 

Total floor space:

62 sq. ft. (5.8 sq. meters)

 

Net weight-

transmitter (all cabinets) weighs 4,891 lbs. (2,273 kilos); plate transformer enclosure weighs

1,990 lbs. (903 kilos)

 

Export shipping:

gross weight 9,700 lbs. (4,400 kilos); 800 cubic feet (22.65 cubic meters)