HCJB GLOBAL HC 100

GENERAL DESCRIPTION

HC 100 Transmitter General Information

photo HCJB Global HC 100

DESCRIPTION

The HC 100 shortwave multiband amplitude modulated transmitter is a state of the art transmitter using the latest technology in modulation technique and control. The RF section uses time proven techniques with a final tube operating well below its rating to provide high reliability and long life. The modulator design has reduced the heat losses by ten to one over a conventional tube type plate modulator. The computerized control system provided operator and equipment protection not previously available on conventional transmitters. It implements a wide range of fault analysis which is displayed on the monitor screen.

PROTECTIVE MEASURES

Components used in the transmitter have a high margin of safety with respect to their published ratings.

The control and metering systems sense overload conditions and many parts of the transmitter and shut the transmitter down to the nearest safe operating level. Main and individual circuits are protected by fuses and circuit breakers. A computer based control system manages operation of the transmitter with inputs from the operator and feedback to the operator via the metering system and CRT monitor presentation of the data.

Water and air temperatures and coolant flow are constantly monitored with automatic shutdown for overtemperature or lack of coolant flow.

TECHNICAL SPECIFICATIONS
TRANSMITTER RF PERFORMANCE
Frequency range	4.9 to 22 MHz
Wavelength bands	13m, 16m, 19m, 25m, 31m, 41m, 49m and 60 meters
Ouput power	100 kW
Output impedance	300 ohms balanced
Spurious Outputs	Meets FCC and CCIR Specs. (-80 dB max.)
Carrier shift	Less than 2% at 100% modulation
Balun	External overhead, 75 to 300 ohms
AUDIO PERFORMANCE
Type of modulation	Amplitude, Solid state; 64 stepped modules, 120% at 50 to 5000 Hz
Input impedance	600 ohms + 10 dBm for 100% modulation
Freq. response	+1/-2 dB from 50 to 5000 Hz for 95% modulation at 1 kHz reference
Audio distortion	Less than 2% from 50-2000 Hz at 95% modulation. Less than 3 % to 5000 Hz at 85% modulation.
Audio noise	-50 dB or better below 100% modulation
Transient resp.	Zero tilt after clipping. High frequencies attenuated 2 dB at 5 kHz to minimize overshoot.
TUNING
Type	Automatic with servo motors & presets within bands.
Rate	Frequency and band change within 30 seconds
SERVICES REQUIRED
Connect power	480 Vac - 3Ph @ 220 amps maximum demand 120 Vac - 1Ph
Power Factor	> 90 %
Compressed air	60 - 100 psi (Flow only at turn-on/turn-off)
POWER CONSUMPTION
Consumption at % modulation	0 % : 147 kW 30 % : 154 kW 100 % : 220 kW
Overall Efficiency	72 %
CONTROL
Control Panel	Analog and Video metering presentations with push button and keypad operation and data input.
Control System	Computerized, based on the Motorola 68000 CPU
OPERATING ENVIRONMENT
Humidity	95% Max.
Temperature	0 to 50 degrees C
Local location	Indoor operation
Altitude	Operable to 10,000 feet above sea level
CABINET DIMENSIONS
Height	130"
Width	119"
Length	112"
No. of units	Two units (for shipping) 113"L x 83"H x 46"W each
Specifications may change without notice

TUBE COMPLEMENT
RF stages		AF stages and modulator
Number	Type	Number	Type
1	4CV100,000C
1	4CX3500A

THIS TYPE OF TRANSMITTER IS INSTALLED IN THE FOLLOWING COUNTRIES
	ITU	Country	ITU	Country
	EQA	ECUADOR	SWZ	SWAZILAND
	USA	USA