modified 9 years ago

Antenna Coupling Device

00:44:21

This is low power antenna coupling device with antenna feed coming from left.  Adjust to get maximum feeding to antenna out.

The two SPDT switches represents one DTDT switch.  The right two  SPST represents one DPST switch.  Switches are about 1 foot apart.

This is top view looking down.  The two offset box- looking circuits in center is  two rounded coils not touching each other (the coupling) with power in top side side coil is mounted above lower antenna out coil to the antenna tank circuit.  Top coil can be rotated up or down slightly on a rotating shaft and tightened in position.

published 9 years ago

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