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About KDefran

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  • Birthday 10/06/1986

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    San Diego, CA
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  1. It appears as though my glideslope woes have been fixed. I sent the KX155 to Bevan Aviation. They were great and talked me through my options and were able to get it fixed for a reasonable price. Today, I flew the plane and both of the glideslopes worked as expected! In the end, it appears as though there was not a common cause and both units independently had failed glideslope receivers. Thank you everybody for the help and guidance!
  2. I just wanted to follow up on this topic. I recently got the airplane back from its annual inspection. While it was there, I made the decision to send the GNS530 to Garmin for refurbishment. This has appeared to fixed the problem. I've taken it on a few flights so far and have had no issue with the ILS glideslope at a couple of locations. Since this fixed the problem, I will likely send the KX-155 for refurbishment next time the plane is down for a while. After all was said and done, I was wrong that it was something to do with the splitter, but I'm glad it is working.
  3. Problem is still not fixed. I tried to do some troubleshooting with a glideslope antenna inside the cockpit and the splitter removed from the equation. It appears to confirm that both the 530 and KX-155 are not processing the glideslope signal. Next annual I am planning on sending either the 530 or the 155 back to the manufacture to repair. If the manufacture fixes one, then the other one is probably fixable too. I still find it hard to believe that two relatively independent units failed in the same way, but that is what the evidence is saying.
  4. https://www.aircraftspruce.com/catalog/avpages/ramiav585.php Here is the diplexer/splitter that I'm talking about. The coaxial from the antenna goes into the input, and there are 4 outputs; 2 VOR/LOC and 2 G/S. I'm not exactly sure what the term diplexer means, but I guess it acts more as a splitter.
  5. UPDATE: Looked at the airplane today and found something weird. Coming out of the diplexer there are 4 coax cables, 2 VOR/LOC and 2 glideslopes. It appears as though the wires were switched. Basically the VOR/LOC output from the diplexer would go to the glideslope input for the unit. The opposite was also true with the glideslope output was routed to the VOR/LOC inputs. This was the case for both the 530 and 155. I switched the wires and noticed immediately that the localizer needle moved more forcefully however there was still nothing on either glideslope. I decided to take it up fo
  6. -Engineer yes, great memory no. Learned about it years ago and it just stuck. I'm not as familiar with my antenna as I should be, but I'm going to become more familiar with it. I'm definitely a fan of WAAS approaches so that's why I'm not in a big rush to fix the ILS. I'll have to ask around to see if there are any 155s to check it with. I'm not sure of the process that he used. That will be a question for me to ask him as I never would have thought of that. This might the the cheapest/easiest way to test the units myself. I'm going to do some searching for a good int
  7. Hello All, This is my first post, but I've been reading and learning a lot from this site for years. I have been having an issue with my ILS glideslope since I bought the plane ~2 years ago and still have not figured it out and I'm hopefully that some members might have some ideas that I haven't thought about yet. The NAV/COMs in my airplane consists of a GNS 530W and a King KX-155. When I bought the plane, the ILS glideslope would be very weak. Sometimes it would work, sometimes it would not. This would occur on both the 530 and the 155. I can't clearly remember exactly what was hap
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