Good question Gil - I actually replaced the splitter with a known good one (that we had taken out of Mikey) a few months back. Now I have TWO surplus, expensive splitters.....
I thought I remember the same thing about a copper foil GS antenna in the cowl - searched and couldn't find it. The stripped Coax helped me confirm that I want the separate antenna - now I'll do a little more research before making my final version - anyone know if there is a better length than 16" (I got that from Knuckoll's dipole design in his book)?
Paul
Paul
It's been a while, what did you conclude about the your GS antenna. I'm installing Bob's Nav and beacon antennas in the wing tips and using two belly com antennas. I'm down to my GS antenna, what's the answer?
Peter Richmond
I've been very happy with my "stripped Coax" GS antenna - it works great! In the -3 we're building, I am going to do the same thing use the Archer in the tip for VOR/LOC and put a GS antenna in the leading edge of one of the gear fairings - the length will be perfect to hide the antenna, and i really only want reception when I am pointed at the transmitter, so I think it will be a good solution.
Paul
Paul, shouldn't the GS antenna be horizontal, not vertical as in a gear fairing?
The typical glideslope transmitter is usually located 750 feet from the beginning of the runway and radiates a 5-watt RF signal from a horizontally polarized antenna array at an inclined glidepath angle of 2.5" to 3.00. The glide slope transmitter operates on one of 40 available channels provided by 150-kHz spacing in the UHF frequency range of 329.15 MHz to 335.00 MHz
For those making your own GS ant:
1. Are you using RG58 OR RG400?
2. Is the stripped portion 16" long with the last 8" of shield peeled back? Is the shield grounded to the airframe?
3. I hear it needs to be mounted horizontally, can it be mounted in the wingtip parallel with the outboard rib or span wise, i.e across the inside of the wingtip?