[R-390] Tech Tip re R-390

[Pete Williams]

 G'day list....maybe it's obvious or mentioned in despatches before but if
you find during the lower frequency  alinement point - i.e 4.6 MHz- one of
the slugs has its top level with the rack, suspect the cap within that can
Found that today in a R-390/URR in one of  the 4 to 8MHZ can-- the 910pf
cap.open.
I had to parallel a couple to get near that value but alinement OK after the
substitution

Pete VK3IZ