I have a SL30 displayed on Skyview with a Bob Archer wingtip nav antenna and RG142 antenna cable. I can tune VOR’s from beyond the published service volumes, localizers from 40+ miles out and get a stabile localizer signal all the way inbound with headings +- 45 degrees of the localizer course.
The problem is with glideslope. When intercepting the glideslope using a published approach, the glideslope will come in the indication limits and then may either drop intermittently and or become erratic. All the while the localizer is steady as a rock.
The installation is 8 yrs or so old, and the aircraft has always been VFR, but now I am starting to work on an instrument rating. I observed this behavior on my post installation check flights, but somehow never got around to chasing this down.
Typically if there are problems with the antenna, or antenna cable, localizer is the indication that can be squirrely. Since reception of VOR’s and localizers is just fine, I believe that the antenna is ok. I’d appreciate it if anyone knows anything about either a SL30 to Skyview interface problem or has other suggestions, to chime in before I take the SL30 to get checked in a shop.
The problem is with glideslope. When intercepting the glideslope using a published approach, the glideslope will come in the indication limits and then may either drop intermittently and or become erratic. All the while the localizer is steady as a rock.
The installation is 8 yrs or so old, and the aircraft has always been VFR, but now I am starting to work on an instrument rating. I observed this behavior on my post installation check flights, but somehow never got around to chasing this down.
Typically if there are problems with the antenna, or antenna cable, localizer is the indication that can be squirrely. Since reception of VOR’s and localizers is just fine, I believe that the antenna is ok. I’d appreciate it if anyone knows anything about either a SL30 to Skyview interface problem or has other suggestions, to chime in before I take the SL30 to get checked in a shop.