Page 13 - GB-4000 Brochure www.QuantumBalancing.com
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For those who want more Power! “M.O.P.A.”
190-Watts - Works exclusively with the “GB-4000”
Please note: The plasma tube is
sold by a separate company. But
we designed and tested it so it is
matched to the “M.O.P.A.” circuit
for the greatest power output. It is
guaranteed to work with the
“M.O.P.A.”
A smaller plasma tube will not be
able to handle the power output of
the “M.O.P.A” and will void the war-
ranty. We will help make sure you
get the correct plasma tube when
you purchase the “M.O.P.A.”
The “M.O.P.A.” (Master Oscillator Power Am- It has two variable frequency ranges. One is
plifier) is a variable 20-watt to a maximum of 190 from about 2.2MHz to about 3.8MHz and when
-watts RF plasma tube amplifier. It is an updated producing harmonic sidebands its frequency
replica of the original vacuum tube equipment range goes from about 1.7 to 4.3MHz. The se-
that was manufactured during the 1930’s/1950’s cond frequency range covers the GB-4000’s
era. It can be run 24/7 without overheating. complete frequency range from 1 Hertz to
Though it has been updated with modern 20MHz or 20 million Hertz.
electronics it still uses the RF tank coil and 812a Why have an instrument that only has a
vacuum tube needed to produce the original an- 180,000 to 400,000 Hertz frequency range when
alog sine wave and square wave waveform out- you can have an instrument with a 20 million
put of the original 1936/1950’s style equipment. Hertz frequency range and is less expensive?
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