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The Super-Autodyne
383
may be soldered to lugs, or to the condensers directly.
Only two connections can be put on the panel alone. These are a connection between the rheostat and potentiometer, and one between the potentiometer and Si. (See Figs. 3 and 4.) Bus-bar should be used, straightened, carefully cut, and bent to proper length before any attempt is made to solder it in place. A long piece of bus-bar should not be soldered to a lug, and then bent and twisted until it reaches the other lug to which it is to be soldered. Each piece should be bent to fit properly, cut to size and then soldered in place.
ASSEMBLING ON THE SUB-PANEL
CTARTING on the sub-panel, all the ^ wiring visible on it in Fig. 3 should be put on, the shelf then turned over, and the wiring necessary on the bottom put in place. All of the r.f. and a.f. transformer cases are connected together, and in turn connected to the negative filament line, which joins the minus lugs of all sockets, just as the positive line joins all the plus terminals of the six sockets. The Benjamin brackets should be fastened
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FIG. 9
to the sub base, and in turn loosely fastened of the panel. The lugs of the bypass condensers Cy and C8 are bent at right angles, and slipped in between the brackets and fastening nuts, as in Fig. 4. This makes a solid mount-? ing for these condensers, after the screws are tightened, as well as for the shelf-brackets. The balance of the wiring is then put in, running between the parts on the sub-shelf and those on the panel. This will not be found difficult, particularly if spaghetti is used only where there is danger of two wires shorting, or a wire shorting on an instrument.
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ROTOR
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OSCILLATOR COUPLER CONSTRUaiON DETAILS
Upper Coil L2
Lower Coil
23 45
DIRECTION OF WINDING
DETAILS OF CONSTRUCTION OF THE OSCILLATOR COUPLER