. QST . rise above a safe value. To avoid coil changing, a portion of the plate 1 Grammer, More Effective Utilization of the SmallPower Transformer, QST, Nov., • If this transmitter doesnt become avery popular design for a first transmit-ter Mere g:oing to change fortune-tellers. It has all the desirable features aNovice transmitter can have: full po^ver,maximum >vatls-per-dollar, and ease ofconstruction and operation. In fact, forany kind of crystal-controlled operationon 80 or 40 at the 75-watt level, it ismighty hard to beat. At catalog pricesthe cost is less than , and a litt
. QST . rise above a safe value. To avoid coil changing, a portion of the plate 1 Grammer, More Effective Utilization of the SmallPower Transformer, QST, Nov., • If this transmitter doesnt become avery popular design for a first transmit-ter Mere g:oing to change fortune-tellers. It has all the desirable features aNovice transmitter can have: full po^ver,maximum >vatls-per-dollar, and ease ofconstruction and operation. In fact, forany kind of crystal-controlled operationon 80 or 40 at the 75-watt level, it ismighty hard to beat. At catalog pricesthe cost is less than , and a littlejudicious shopping and swapping canbring the price down still more. coil is shorted out when 40-meter operation isdesu-ed. Co Ji struc tion The transmitter is built on an 11X7X3-inch aluminum chassis and the 6146 and above deck are shielded by a 6 X6 X 6-inch aluminum box. If one lives in anarea where there is no danger of TVI, the tubeand other parts above chassis could be left un-shielded. The controls could be mounted on apanel. However, because TVI must be considered,the construction shown here takes care of thebugaboo. The transformer a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
