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Troubleshooting ADF


Tommy

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Lately I have noticed my KR-87 ADF *gasps - what the heck is NDB?!* is playing up a bit. It's now spins around haphazardly as if it's hunting the station (I tried various stations but getting the same result). No issue listening to the mose code and it points to right wing when it's in ANF mode (normal). Resetting it with CB didn't do anything. 

Wonder what would cause this? It was working fine two months ago. 

I know it's an old technology but it's still part of commercial syllabus here in Australia 

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Lately I have noticed my KR-87 ADF *gasps - what the heck is NDB?!* is playing up a bit. It's now spins around haphazardly as if it's hunting the station (I tried various stations but getting the same result). No issue listening to the mose code and it points to right wing when it's in ANF mode (normal). Resetting it with CB didn't do anything. 
Wonder what would cause this? It was working fine two months ago. 
I know it's an old technology but it's still part of commercial syllabus here in Australia 


Do you have the combined antenna or the one with the long sensing wire? I would make sure everything is grounded properly. Also I seem to recall my ADF days pulling the unit from the rack and reseating it to solve sensing problems.


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I tried reseating it today. No luck. Going to clean the antenna instead! I used to but now I can't pick up the AM radio stations unless I press BFO and turn the volume right up and even then it's very faint. 

Does it point to an antenna problem?

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