Thinking of acquiring a 9500. but first need to learn a few things. someone
help me with these questions?
What are the "updates/upgrades have been done" that I often see along with a
"for sale" ad?? it seems to include (but not limited to):
What is/are the xfmr/blower/hall effect upgrades made and why are/were they
done? What do they fix/prevent?
What others besides the above are out there?
When did they begin including these into production, at what serial
numbers/years?
How important are they?
How easily done are they ?
Is the firmware archived somewhere to that it can be reproduced to replace a
controller if needed?
The 87A I have seems to be crippled if this occurs, as I understand there
was no archive kept of the firmware and you can end up with a brick.
Apparently some of the devices used have limited write cycles as well and
are now beginning to crap out.
-bob, w9zv
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