Summary of FL-2000B
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Instruction manual fl-2000b yaesu musen co., ltd. Tokyo japan downloaded by amateur radio directory.
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****************************************** fl-2000b linear amplifier ****************************************** general the yaesu fl-2000b linear amplifier is designed to match the "f" series transceivers and transmitters in appearance and drive requirements to run high power snout covering the ham ...
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Specifications circuit : grounded grid class b frequency coverage : ham bands 80 through 10 meters plate input : 1200 watts pep, 1000 watts cw and 600 watts am plate voltage : 2400 volts dc drive requirement : 100 watts pep input impedance : 50 ohms, unbalanced output impedance : 50 - 75 ohms, unbal...
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Unpacking carefully remove fl-2000b and tubes from their packing cartons and examine them for any visible shipping damage, check the control knobs and switches for complete freedom of action. Should any damage be apparent, notify the delivering carrier immediately stating the nature of the damage in...
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It is recommended that the fl-2000b is operated from its own 220 volt 10 amp or greater circuit. If 117 or 100 volts is all that is available, it should be fused for 20 amps, circuit conductors should be larger than #10 and no other equipment should be operated from this circuit. Do not, under any c...
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Antenna requirement the fl.-2000b has been designed for use with an antenna resonant at the operating frequency and having approximate impedance within the limit of 40 to 80 ohms. The nominal output impedance of the fl-2000b is 50 ohms. When the impedance of the antenna used is far from this value, ...
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Relay control ry and e terminal on the rear of the fl-2000b are provided for connection to the exciter relay circuit which is normally open, and which closes on transmit and thus keys the fl-2000b at the same time. E terminal should be connected to ground for exciters whose relay contact connects to...
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Band plate loading 80 4 2 40 6-7 3 20 7-8 4 15 8-9 5 10 9 6 turn the power switch of fl-2000b on and wait for a few seconds for tube warm up. Turn oper switch onto "oper" position. Turn on the exciter and increase the exciter output while not exceeding 0.2 amps plate current and tune the-plate contr...
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Full scale at swr switch "f" position. Turn swr switch to "r" position, then swr may be read directly from upper scale of the meter. Theory of operation the fl-2000b is designed to use two 572b/t160 zero bias triodes in a class b grounded grid configuration. The rf driving power delivered to the inp...
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Removing shield cover after removing the top cover, the shield cover of the pa compartment can be removed by taking out two screws on the shield cover. The safety lock shorts out the charge condensed in the capacitor. Removing the cabinet after removing six screws on the front end and two in the bot...
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Band switch : on desired band to be tuned loading : fully counter-clockwise plate control : in the position described on page 7. With the exciter tuned up on cw in the middle of the band to be tuned, turn on the fl-2000b. The amplifier now works without plate voltage. Extreme care should be taken, b...
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