Garey, you were right, as usual.
I pulled the 2.4k filter out of the R-4C (late prod). I am hoping I can get it
back in, as it's definitely microsurgery!
After liberating the filter, I checked the continuity of the wiring -
connectivity is fine through both switch wafers.
So I wired up the filter with some short hook-up wire (you can't just plug into
any of the accessory sockets due to the studs for the GND connections) and
plugged it into the .25 filter bay. The additional insertion loss is gone!
Getting this back in its place is going to be a workout. I'm figuring at this
point that we had a bad connection - but I've got a nagging feeling the problem
will be back when I reinstall the filter. Still - this is a better place to be
right now than holding a $100+ replacement and discovering I didn't need it.
73,
Steve Wedge, W1ES/4
"I can't complain, but sometimes I still do."
- Joe Walsh
If the above message appears, it came from Steve's Son of Laptop!
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