. QST . Frequency range — to 30 Mc. Power input—1000 watts. Thoroughly TVI suppressed. Drive with your Vilcing l/il. Viking Ranger or 30 watt exciter. Modulator frequency response, 200 to 3500 cycles d= 1DB. No coil changing necessary. Pi-network tuning. 240-1000 Johnson, KW Power Amplifier with tubes, wired and tested $ 1 251-101-1 Accessory desk top and right hand pedestal $ 251-101-2 Accessory desk top and left handpedestal $ Write, Wire or Call. CHECK YOUR QSLs WITH . . ^ ^ FASCINATINGLY INTERESTING!FOR OLDTIMER & NEWCOMER ALIKE Features 32 Operating Awards of Amateur
. QST . Frequency range — to 30 Mc. Power input—1000 watts. Thoroughly TVI suppressed. Drive with your Vilcing l/il. Viking Ranger or 30 watt exciter. Modulator frequency response, 200 to 3500 cycles d= 1DB. No coil changing necessary. Pi-network tuning. 240-1000 Johnson, KW Power Amplifier with tubes, wired and tested $ 1 251-101-1 Accessory desk top and right hand pedestal $ 251-101-2 Accessory desk top and left handpedestal $ Write, Wire or Call. CHECK YOUR QSLs WITH . . ^ ^ FASCINATINGLY INTERESTING!FOR OLDTIMER & NEWCOMER ALIKE Features 32 Operating Awards of Amateur Radio Societies in All Six Continents. With complete logging space for each ^X,3S - Possessions $ Foreign LOG SIZE Order From Your Distributor or 64 PAGES Compiled By DXERAMA Sam Fraim W3AXT ^{^^,\,,\^^^ \Z ^ Includes WAA BERTA WBE i^ Multimatch Antenna System {Continued from page 23) again, the capacitor is made up of concentricaluminum or dural tubing separated with poly-styrene, and the coil is concentric. In eachcapacitor, the polystyrene insert (Fig. 4) shouldprovide a tight fit to both sections of tubing,and the insert should be driven into the outerconductor to the shoulder. The inner conductorshould be driven into the insert for a distanceof 2^ inches (thus protruding 2 inches insidethe outer conductor). This gives a capacitanceof approximately 25 ix^l. The trap inductors arewound with No. 8 wire. The 10-meter inductorshave 5 turns 2]/2 i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
