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Zehlendorf LW
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LW Antenne Zehlendorf 177 kHz - Cage ropes and guy wires
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Double insulator at the inflexion point
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Foundation for one of the six cage ropes
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Guy foundation
Device for monitoring of sparks across guy insulators
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Modification of the upper guys
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Photos: Arne Schenk
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The existing guy insulation was modified for the upper guys. All guy insulators except for two,- the uppermost and the lowest-, have been bridged in order to ground the guys statically. The lowest insulator of the uppermost guy was bridged by a coil representing a statical short circuit. The coil is a rectance for the operating frequency.
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The value of the reactance determines the current distribution on the guy. By choosing the right value the current distibution of the antenna remains nearly unchanged comparing to the one with the original insulations of the guy.
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A photo showing details.
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Zehlendorf LW
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