. QST . p of the power supply and adjustthe slider for 22 volts bias. The slider should beset at 166 ohms. Make the adjustment with thetransmitter on, as it takes the full current in thetransmit position to cause the 22-volt drop acrossthe resistor. The voltage will be less during re- iContintied on page 114) WHILE NEW YORK CITY SLEEPS Amperex® vhf tubes STAND GUARD I mMlM^^^ u ... end over 70,000 Amperex 5894 or6252 VHF transmitting tubes are nowin use all over the country, in approvedequipment by Fire Departments, CivilDefense, Police and other MunicipalEmergency Services . . because Amperex
. QST . p of the power supply and adjustthe slider for 22 volts bias. The slider should beset at 166 ohms. Make the adjustment with thetransmitter on, as it takes the full current in thetransmit position to cause the 22-volt drop acrossthe resistor. The voltage will be less during re- iContintied on page 114) WHILE NEW YORK CITY SLEEPS Amperex® vhf tubes STAND GUARD I mMlM^^^ u ... end over 70,000 Amperex 5894 or6252 VHF transmitting tubes are nowin use all over the country, in approvedequipment by Fire Departments, CivilDefense, Police and other MunicipalEmergency Services . . because Amperex tubes have provenMOST DEPENDABLE If disaster should strike, will your com-munication equipment meet the test? Intime of disaster, there is no substitutefor dependability — even initial costbecomes secondary! Long life, rugged-ness and reliability were the watch-words in the final selection of thesetubes. If you are planning new fixed ormobile stations, insist on AMPEREX type5894 or 6252 to be sure!. Sonar Radio CorporationsFCDA-approved, ModelCD-2 Transmitter, designedfor CD fixed ond emer-gency operotion uses theAmperex type 6252, Radio Engineering laberaforlei Type 71S Transmitter,vied by New York CItyi Fire Department, employsthe Amperex type 5894. Type 62S2$ Net
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
