From: "Nat Puffer" Subject: Re: COZY: Glide Slope Ant Date: Thu, 4 Jan 2001 10:25:04 -0600 John and other builders, Here are the dimensions (each arm) for the following di-pole antennas (per Jim Weir). Marker Beacon - 34.3 in. FM Music Radio - 26.2 in. VOR/LOC - 22.8 in. VHF COM - 20.3i n. Amateur 2m - 17.7 in. Glideslope - 7.5 in. I think the COM is the only one that needs to be vertically oriented. All the rest should be horizontal. The VOR should be a V shape. Some say the marker beacon should be along the airplane centerline. I installed mine in the wing and it worked just fine. You should keep the tips of di-pole antennas away from metal, and away from each other. I have used Jim's measurements and they work well--better than most factory antennas. My GPS antenna is mounted in the nose, just under the inspection cover (pointed upward toward the satellites) and works well there. I like this location because the co-ax is very short. My transponder antenna is in the bottom of the nose, with the probe just sticking through the skin (pointed down toward the ground stations). You can make your own transponder antenna. You can make the radiating rod for an AN-4 bolt with the head removed. It should be 2.65 inches long from the tip to the ground plane, and insulated from the ground plane. The ground plane can be made from .062 aluminum. It is about 8 inches in diameter (I lost my drawing). I have made my own from one of Jim's kits, and also from scratch, and they work well. You attach the center conductor to the radiating rod, and the co-ax ground to the ground plane. You get a lot of satisfaction when you make your own antennas, they are all hidden, and they work better than the ones that cost mucho bucks! Regards, Nat ---------- > From: Epplin John A > To: Cozy Builders Mailing List > Subject: COZY: Glide Slope Ant > Date: Thursday, January 04, 2001 8:53 AM > > Need help! I dug out my RST antenna kit last evening, has the foil tape and > little torriods etc. Big problem, I cannot find the book that came with it. > > > What I need to know is the length of the tape for the glide slope antenna. > Also would appreciate some suggestions as to location and installation > details for the Cozy. The airplane is built so it will go somewhere in the > nose. I don't like the idea of putting it on the nose cover or the canard, > this means disconnecting it when removing these parts. Also I have a GPS > antenna to mount, Garmin 430 type. Any advice would be appreciated here > also. > > Thanks for any help. > > > John Epplin Mk4 #467 N100EP >