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Radio Insulators¹
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·I.F.Cover
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·I.B.Cover
·Back Cover
 
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PYREX Insulators Have Proven Their Worth

The ease with which radio waves traverse many solid substances capable of obstructing the passage of sound, light, and heat waves, is evidence of their elusive qualities.
    Effective results in radio transmission, and to a more limited extent in the collection of radio energy by antennae for broadcast or message reception, depend on ability to confine the radio current to the antennae and their associated conducting systems.
    Leakages not only cut down the transmission range of a broadcasting station, but they may also affect quality through retransmission from adjacent conductors when the separation is dependent on imperfect insulating materials.
    In the case of antennae for commercial, amateur and broadcast reception the total energy collected is extremely small, and it is important that all the available energy be delivered to the detector stage.
    Insulation is a vital factor in the field of radio communication, and as insulators frequently have to be placed in inaccessible positions it is essential that the material used in their construction possess permanent insulating characteristics, and maintain its effectiveness when exposed to fogs, soot, dirt, industrial fumes and rain.
    PYREX Radio Insulators meet these requirements.


PYREX Radio Insulators Conserve Radio Energy

    PYREX Radio Insulators are made from a special glass, developed by Corning Glass Works, which possesses an unusual combination of electrical, mechanical and chemical properties, making them an effective barrier against leakage and eddy losses.
    The power loss of the glass from which these insulators are made is lower than that of any material now available for radio insulation with the possible exception of pure fused quartz. The phase angle difference is 0.16 degrees (30,000 cycles) and the dielectric constant 4.48 (30,000 cycles).
    The surface conductivity of this glass is so low as to be practically negligible.
    The power factor is 0.28% (30,000 cycles).
    The dielectric strength of 35 kv. per 100 mil thickness is higher than that of the best grades of porcelain, and as the specific gravity is low, PYREX Radio Insulators have the advantages of light weight combined with mechanical strength.
    Their flashover values are uniformly higher than called for by the specifications of the A. I. E. E.
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