[R-390] R-390A (digital readout)

[Tisha Hayes]

"R-9XX
The R-9xx is alleged to have contained a small LED digital readout
where the veeder root counter exists in the center of the R-390A. No
documentation or photographs of this model have surfaced yet."
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I could see where something could be cobbled together with a tiny
optical encoder, some digital logic and a display. Going into that
sort of effort would just show you the desired receive frequency and
not the actual frequency. If someone was going to go that far they
might as well replace it with a R-390A version of a digital dial where
you actually are reading the frequency of the radio. That way you
could get around the slightly non-linear performance of a PTO that is
not exactly dialed in to the Hz.

Otherwise all you are doing is replacing a mechanical odometer type of
display with LED's that are reading the same shaft movements.

It is a marvel in itself to keep all of the knobs, odometer display,
cams, PTO, stops and gears all dancing together in synchronicity. That
is one of the things that initially attracted me to the R-390A, that
is is essentially an 80 pound watch with a really good receiver glued
onto the backside (lol).

-- 
Ms. Tisha Hayes/ AA4HA
-
"Life isn't about how to survive the storm, but how to dance in the rain"