Date: 25/07/03
R.V.R. Elettronica S.r.l. (BO)
VJ8000-TR - R.F. Tube Amplifier
41
9)
Increase the driving power and then execute a new adjustment through the OUPUT TUNE
and OUPUT LOAD commands until you have the maximum exciter output power. Using
only the modulator is possible to reach an output power of 600-700 W (with valve Yu148).
10)
Decrease at minimum power the exciter and then connect in series the driver amplifier, fron
300 to 500W.
Switch on again the exciter, and position the final OFF, wait the end of post-ventilation, and
repeat the tuning operations sequence of OUPUT TUNE and OUPUT LOAD for the least
output power and consequently of OUPUT TUNE and OUPUT LOAD for the maximum
output power, increasing gradually the input power; in case that increasing driving power
increases the input SWR of the VJ8000, adjust the input tuning by OUPUT LOAD and
INPUT TUNE for the minimum SWR value.
12)
Adjust now, the driving power level and OUPUT LOAD and OUPUT TUNE tuning to
obtain a output power of 5 KW. For all other parameters see as reference the CHECK TEST
TABLE enclosed to equipment, keeping in mind that the maximum value are the following:
IA = 2,5 A
Ig = 500 mA
VF = 7 VAC
If = 78 A
ROS o RFL = 1000 W
Summary of Contents for VJ8000-TR
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