. QST . , for it willincrease your receiving performance by at leastas great a factor. A Low-Cost 10-Watt Transmitter The little rig pictured here will take an inputof 10 to 15 watts, when used with a 300-volt plate. A 2-tuhc traiismitter, capable of running 10 to15 watts input. The 4-pin connector on the front wall ofthe chassis may be plugged directly into the modulator,or a cable may be run between the two units. Tip jackson the left end of the chassis are for measuring final-stagegrid and cathode current. supply, and it can be adapted readily to portableor mobile, as well as home-s
. QST . , for it willincrease your receiving performance by at leastas great a factor. A Low-Cost 10-Watt Transmitter The little rig pictured here will take an inputof 10 to 15 watts, when used with a 300-volt plate. A 2-tuhc traiismitter, capable of running 10 to15 watts input. The 4-pin connector on the front wall ofthe chassis may be plugged directly into the modulator,or a cable may be run between the two units. Tip jackson the left end of the chassis are for measuring final-stagegrid and cathode current. supply, and it can be adapted readily to portableor mobile, as well as home-station use. When usedin conjunction with the modulator described inQST for December, 1954, it makes a transmitter that will give a good ac-count of itself on 6. After youve made your startwith the rig as described, it may be used to drivehigher power stages at a later date. Two dual triode tubes are used. A 12AT7 servesas an overtone oscillator and doubler, using 25-Mc. crystals. Output is on 50 Mc, driving a12BH7 push-pull amplifier. The second tube canalso be a 12AT7, but the larger tube handles thepower more readily. The rig fits a 5 by 7 by 2-inchaluminum chassis, with plenty of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
