[R-390] 200-kHz calibrator crystal

[Flowertime01 at wmconnect.com]

Fellows,

The crystal cans in the R390's will unsolder nicely and the crystal unsolders 
from the 
cans pins. 

Many of the new small size crystals will fit in the cans nicely.
Some wire lead crystals have the same size can. These can be set on an old
crystal can base and the wire leads soldered into the socket pins. These will 
set
up a bit higher due to the old crystal can base.

Some of the new resonators will fit in the old cans.

I have used old cans and repacked them a lot like rebuilding caps.

I just run a bit of solder over the top of the can where the frequency is 
stamped in.
This lets me recycle some old crystal cans I have picked up. So I do not have 
to melt down a working crystal that just is not exact enough for what every I 
want.

I have rebuilt several 455 KHz crystals in the IF deck this way for decks 
that had lost the crystal. 

Just an Idea as you need to get a particular part replaced.

You may find the crystal frequency cheap in the wrong package and can live 
with it after some soldering on the bench.

Roger AI4NI