. QST . The RME-lOO Speech Clipper in its streamlined cabinet. frequencies below 300 cycles. The output im-pedance is 47,000 ohms, and the input impedanceof the stage into which the unit feeds should be aminimum of 100,000 ohms. Hum level is 40 signal at average clipping level.—• D. Fig. 1 — Circuit of theRME-lOO speech resistors J^ watt un-less otherwise capacitances in fit. 44 QST for The P-500 Power Amplifier THE Lakeshore Industries P-500 power ampli-fier is another in the current crop of poweramplifiers designed primarily to boost thepower level of a
. QST . The RME-lOO Speech Clipper in its streamlined cabinet. frequencies below 300 cycles. The output im-pedance is 47,000 ohms, and the input impedanceof the stage into which the unit feeds should be aminimum of 100,000 ohms. Hum level is 40 signal at average clipping level.—• D. Fig. 1 — Circuit of theRME-lOO speech resistors J^ watt un-less otherwise capacitances in fit. 44 QST for The P-500 Power Amplifier THE Lakeshore Industries P-500 power ampli-fier is another in the current crop of poweramplifiers designed primarily to boost thepower level of a single-sideband signal. It usesa pair of 5514 triodes in push-pull, with multi-band tuners^ in the grid and plate circuits tocover the amateur bands from 80 to 10 a consequence, there is no bandswitch of anykind, and the panel has two dials, for the gridand plate tuners, and a knob for controlling the The Lakeshore Industries P-500 power amplifier uses a pair of5514 triodes mounted horizon-tally. Multiband tuners hoth ingrid and plate circuits eliminatethe need for a bandswitch. Nor-mally, the grid-circuit compart-ment is covered by an aluminumplate. The construction of this unit isinteresting in that no normalchassis is used. The grid com-partment is a box within thelarger b
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
