I have an RV9A and I placed a classic Comant whisker type Nav antenna on the bottom of fuselage under the horizontal stabilizer(near the rear tiedown), a common place for it. However I found that if I am on the glide slope the signal gets blanked by the plane. If I bank away from the approach the Glide Slope shows up as the antenna becomes visible in the path. I really thought this location would work.
I worry that wing tip installations and the fuselage will blank the signal from the far side of the plane in a similar way. My other option to place it on top of HS stabilizer, a bit of work and an eye sore however. This is an IFR plane, it has to work all the time, not a nice to have.
Has anyone else ever seen this type blanking of the NAV/ILS/GS signal?
I am going to take the VNA to the able just to make sure it not a weak signal due to a cable issue. I can get VORs at 40+ miles at 3K feet however.
I worry that wing tip installations and the fuselage will blank the signal from the far side of the plane in a similar way. My other option to place it on top of HS stabilizer, a bit of work and an eye sore however. This is an IFR plane, it has to work all the time, not a nice to have.
Has anyone else ever seen this type blanking of the NAV/ILS/GS signal?
I am going to take the VNA to the able just to make sure it not a weak signal due to a cable issue. I can get VORs at 40+ miles at 3K feet however.