. QST . Made up of four individually shielded sec-tions, the Johnson Low Pass Filter providesmore than 75 db attenuation of harmonicand spurious frequencies above 54 mcs. In-sertion loss is less than .25 db . . construc-tion features replaceable Teflon insulatedfixed capacitors. SO-239 coaxial connectors— furnished completely wired and pre-tuned. Handles more than 1000 watts RF. Cat. No. 250-20 Amateur Net E. F. JOHNSON COMPANY WASECA, MINNESOTA. New TENACIIP ,:^, attaches to stops antenna whipping Clear plastic clip quickly fastens to rain mold-ing . . holds light or left antenna
. QST . Made up of four individually shielded sec-tions, the Johnson Low Pass Filter providesmore than 75 db attenuation of harmonicand spurious frequencies above 54 mcs. In-sertion loss is less than .25 db . . construc-tion features replaceable Teflon insulatedfixed capacitors. SO-239 coaxial connectors— furnished completely wired and pre-tuned. Handles more than 1000 watts RF. Cat. No. 250-20 Amateur Net E. F. JOHNSON COMPANY WASECA, MINNESOTA. New TENACIIP ,:^, attaches to stops antenna whipping Clear plastic clip quickly fastens to rain mold-ing . . holds light or left antennas. Preventsdamage to antenna from low hanging limbs ordriving Into garage. See your dealer or orderdirect. No please. PLASTICLES, 4207 GRAND RIVER, DETROIT8, MICH. »J M pcapald Requiring some use and knowledge of the code, auroraDX does not get the play it deserves Perhaps some liesitateto jump in, fearing that their lack of skill in the handling will show uj) glaringly. But nobody need worry on thatscore. Few men are operators of long experience,and many are just getting tlieir first licks in. Even if youcould send and receive at 40 , there would be nopoint in doing it, as experience has shown that there is littleto be gained in going much beyond 15 in auroral communica-tion. If 15 sounds like high speed to you, dont letthat stop you; there is no more cooperative group of hamsanywhere tlian youll find
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
