Radio age (Jan 1927-Jan 1928)

RADIO AGE for November, 1927 smooth volume control is provided to afford signals that can be heard a block away or in just a whisper. Assembling and wiring the set was an interesting operation. All the parts coordinated perfectly. There is available on the market a front and sub-panel already drilled for the parts to be mounted thereto. As the parts are taken out of the boxes they are screwed down to the sub-panel in the proper places as indicated in Figure 2. Soldering lugs should be inserted on all the machine screws holding the transformers to the panel and also on all the filament terminals of the tube sockets, for electrical connections. Most of the lugs from the plate grid terminal of the transformers should be soldered directly to the tube sockets making practically no leads. Solid bus bar wire can be conveniently used in wiring up the set and the lugs bent so that the wires will be straight or at an angle. This gives the set a very neat and commercial appearance. Spring washers beneath all nuts are a great advantage as 11 they prevent the nuts from loosening and making a poor electrical connection. Assembling the new drum dial and condenser is probably a novel experience but as the fittings are quite obvious there is no difficulty. On the right hand dial, however, slight changes may have to be made so that the condenser will be mounted the opposite way from the left hand condenser. This is simply a changing of the position of the shaft and putting on another gear provided for that purpose with (Continued on page 32) CD X fell 1 1 > I »> H s 1 Z ■ *5 ■ ' . ■ a "to i 5ji ! §5 5 ^ > S IS 2 1 ■» ^ + hi s g