If you’ve been following the transponder saga, you know that recently I have had Approach A tell me they’ve lost my transponder (as they slip to the airplane’s 3 or 4 o’clock position), and yet have Approach B (still ahead) see it just fine.
Happened again yesterday, with my home base airport BLM, in site; i.e. I was low, 2,000 feet, when McGuire Approach - at my 3 o’clock - lost my transponder. I requested a 360 and asked them to advise if they picked it up… partway through my turn, when I was headed more or less toward McGuire, they did.
Add to this others’ experiences - so far, I know of two who have had the same thing happen. I am now reasonably satisfied that this problem has some sort of directional nature to it; also satisfied that whatever it is, it’s very borderline, considering that some owners never (or hardly ever) experience it. Stay tuned.