[R-390] Active List

[Tisha Hayes]

It can be overwhelming to think of the amount of detail that went into the
design of the R-390- 390A series of radios to go after the level of accuracy
and stability they achieved with tube based gear.

I bet that almost none of it was done using even a primitive computer to do
the curves and calculations of how all of the components came together into
making the design.

Many folks today are in one of two camps;

1. Come up with a design and then kludge together a bunch of stuff on top of
that design to get accuracy and repeatability.

2. Make a computer model of something, then build it and tear your hair out
when it does not behave like the computer model said it would.

To have the honor to work as one of the design team at Collins. This applies
for many different Collins derived designs. They were not too many years
removed off of hand wound coils and galena crystal detectors.

73'
Tisha