Carl Denks's
Cosy Antenna Installation
Note: All antennas are Antenna Dynamics Co. copper plated on thick mylar film.

[Text and photos by Carl Denk. Send questions and/or comments to Carl.]

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Bottom of fuselage, black line at far edge is marker beacon antenna. Bottom of fuselage showing .012" aluminum sheet transponder and DME antenna ground planes. Here the ground planes are upside down showing stiffener plates and nut plates. The holes are for bonding of outside fiberglass skin to fuselage. Bottom of fuselage with one antenna installed. Before the fuselage was fiberglassed, the left side ground plane was removed, and later a ADF antenna installed inside the fuselage above.
 
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Exterior surface of winglet showing COM antenna. Bottom of canard prepared for VOR antenna (one on each side, left and right). The depression was machined with dremel, router base, straight edge and .75" dia. Flat stone, then coated with micro to provide a surface for contact cement. The square hole is for the antenna balun (matching coil). Bottom of canard, leading edge near showing antenna installation with contact cement. Note balun box center.
 
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Top right side of canard. The coax. Cable came out the top of the Balun with a BNC connector. The groove was routed with a 1/4" dia. Bit, straightedge and the router base. Top center of canard, leading edge near, VOR coaxial cables exiting canard skin. Later they exited the urethane foam canard cover at aft vertical face, above elevator control tube, clearing the belcrank sideways. Note that the radios have a 9" pigtail with BNC connectors, and there is a splitter to provide the glideslope signal. This arrangement would allow a splitter to the glideslope and two VOR's if an antenna should fail. Canopy top, looking forward, showing GPS antenna mounting. The 2 circles are BID fiberglass and Rhomglas, conductive fiberglass as an ground plane effort. Back 7 years ago, there wasn't experience with GPS antenna installations. The antenna is recessed 1/4" into the canopy surface. The coaxial cable is routed in a 1/4" I.D. aluminum tubing conduit to near the hinge. If done again, I would run 2 conduits, one on each side. There is a light in the overhead compass and a interior dome light.
 
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Pilots headrest with ACK ELT antenna inside. Aft side of front seat left side showing ACK ELT installation and bottom of antenna installation.

[Text and photos by Carl Denk. Send questions and/or comments to Carl.]


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Last modified: Fri Jul 9 07:45:34 EDT 1999 1