. QST . key. PF reports that the Radio Clubof Brooklyn, founded in 1919, is the oldest amateur radioclub in New York. Officers of the Club are PF, pres.; CCD,vice-pres.; BKP, secy.; AAZ, treas. AOD uses AX9903finals on 144 and 435 Mc. MDM now has a 40-meter groundplane. K2GWW finished the new transmitter using a pair of16258. GXC has joined the 2-meter ranks. Ditto AEE forthe first time in its 41-year history. LG, one of the Tu-BoroClubs charter members, now is on 10 meters. AZY is thelatest addition to the Tu-Boro caravan. K2AED has com-pleted a 2-meter converter. 55 officers of the Mid-Islan
. QST . key. PF reports that the Radio Clubof Brooklyn, founded in 1919, is the oldest amateur radioclub in New York. Officers of the Club are PF, pres.; CCD,vice-pres.; BKP, secy.; AAZ, treas. AOD uses AX9903finals on 144 and 435 Mc. MDM now has a 40-meter groundplane. K2GWW finished the new transmitter using a pair of16258. GXC has joined the 2-meter ranks. Ditto AEE forthe first time in its 41-year history. LG, one of the Tu-BoroClubs charter members, now is on 10 meters. AZY is thelatest addition to the Tu-Boro caravan. K2AED has com-pleted a 2-meter converter. 55 officers of the Mid-IslandRC are JBQ, pres.; KTF, vice-pres.; STG, secy.; and AZT,treas. K2KXZ dropped the N. Ex-K2GSZ now is KP4ACIand is looking for NYC-LI friends on 10-, 15-, and some-times 20-meter phone with his Ranger and 220-ft. has the rig set up in his office. WCR, the (Continued on page 88) 86 the Eimac 4X250B Radial-beam power tetrode • Higher Power • Easier Cooling • Longer Life. ACTUAL SIZE 4X250B/ a new, superior radial-beam powertetrode by Eimac — originators of the famous4X150A—is now available. Unilaterally inter-changeable with the 4X150A in practically allapplications, this amazing new bantam for mod-ulator, oscillator and amplifier application fromlow frequencies into UHF, offers these advantages: HIGHER POWER—Electrical advances permit onincreased plate dissipation rating of 250 watts,plate voltages to 2000 volts and doubled platepower input capabilities of 500 watts. EASIER COOLING—Development of the Eimacintegral-finned anode makes cooling so easythat only one-third the air-pressure and one-half the cubic feet of air ore required. Forcedair is unnecessary during standby periods. LONGER LIFE—A newly designed, highly effi-cient oxide cathode and increased temperaturetolerances, coupled with Eimac-developed produc-tion and testing techniques enable the 4X250Bto meet the most critical standards. New lech- For further details contactour
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
