R.V.R. Elettronica VJ8000-TR, Technical Manual

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Date: 25/07/03 R.V.R. Elettronica S.r.l. (BO) VJ8000-TR - R.F. Tube Amplifier
12
CHAPTER 1
VJ8000-TR GENERAL DESCRIPTION
1.1 MECHANICAL DESCRIPTION
The VJ8000-TR is allocated in a 19" rack, 37HE, of which are free and can be used to insert
an exciter, a receiver or any other equipment. Two analog instruments are placed on the
hinged frontal panel (Fig. 1) with all other controls and commands. The rear panel (Fig. 2)
hasn’t any connectors but only the air input for the cooling blower, completed with the air
filter and the hole for power supply and external exciters cables. A chimney is placed on top
section of the rack (Fig. 3) that allows to push out hot air. The antenna connector is placed
on the top part too. The type of connector for the ouput is 1"+ 5/8.
1.2 ELECTRICAL DESCRIPTION
The VJ8000-TR is a tube amplifier, with grounded grid configuration, working on the
frequency range 87.5-108 MHz. This amplifier is able to operate at 8KW output power with
a driving power of about 350 W. The amplifier has motorized plate, load and input tuning,
and is able to cover the completely frequency range. The VJ8000-TR is been projected to
use a three-phases mains voltage (monphase only on request).
1.3 TECHNICAL SPECIFICATIONS
See as reference the Table A for electrical specifications and Table B for mechanical and
enviromental specifications.
TABLE A - ELECTRICAL SPECIFICATIONS
Alternate mains voltage Three phases: 220-240V ±15%, 50-60 Hz
380-415V ±15%, 50-60 Hz
Mono phase: 220-240V ±15%, 50-60 Hz
Frequency Range 87.5 - 108 MHz (other on request)
Output Power 9000 W max, 8000 W typical
RF Output Impedance EIA 1+5/8" connector, 50 Ohm
RF Input Impedance N-type connector, 50 Ohm
RF Driving Power 500 W max
Tube EIMAC
Yu148 (3CX6000)
Cooling Forced air cooling
Spurious and harmonics suppression Exceed or equal to FCC an CCIR requirements
Power consumption about 10-13 KW