[R-390] Two questions as I put an R-390a back together

[Barry Hauser]

> There's an image of an R-390A with all the knobs in the right places
> at <http://mikea.ath.cx/R-390A/bigfront.jpg>. It may help. Oddly
> enough, all the knobs on that R-390A seem to have marker lines. It's
> ex-MARS for sure, but I don't know its prior history.


There are two unstriped small knobs, but two are swapped/wrong -- the zero 
adjust has the striped knob that belongs on the audio response switch.. 
Looks like the dial lock knob is (properly) unstriped, probably just a 
reflection of the groove on the side (facing top).

Barry