. QST . at the tube line-up is similar toother transmitters in this class. A 6AQ5 clamptube is included to protect the 6146 by holdingthe screen voltage down when there is no excita-tion, and 6AQ5s are used in the two fixed-tunedamplifier/multiplier stages as well. The oscillatorjob (VFO or crystal) is delegated to a 6CL6, andits voltages are regulated by the 0B2 to minimizefrequency changes with changes in line section can be keyed in either the oscilla-tor and first amplifier/multiplier stage cathodesor in the cathode of the first amplifier/multiplieralone, depending upon yo
. QST . at the tube line-up is similar toother transmitters in this class. A 6AQ5 clamptube is included to protect the 6146 by holdingthe screen voltage down when there is no excita-tion, and 6AQ5s are used in the two fixed-tunedamplifier/multiplier stages as well. The oscillatorjob (VFO or crystal) is delegated to a 6CL6, andits voltages are regulated by the 0B2 to minimizefrequency changes with changes in line section can be keyed in either the oscilla-tor and first amplifier/multiplier stage cathodesor in the cathode of the first amplifier/multiplieralone, depending upon your preference and thesetting of a function switch on the panel that alsocuts in the modulator for phone work. The audio portion starts with a 6AU6 speechamplifier, with a chassis-mounted switch thatpermits either carbon or high-impedance crystalor djaiamic microphone to be used. This isfollowed by a 6AQ5 driver and a pair of 6AV5modulators. A negative feed-back loop around VFO-XTAL 1ST AMP-OSC MULTIPLIER. FEED-BACK
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
