[R-390] BFO Bellows

[Roger Ruszkowski]

I just noticed that the little copper Bellows under the IF Chassis 
 for the BFO control is cracked about half way around one of the grooves.

 Thanks,
 Gordon

------------------
Another opportunity to demonstrate some solder skills.

There is nothing sacred or special about the bellows.
As the BFO PTO is adjusted, the shaft screws in and out.
The shaft through the deck and the front panel are fixed.
Thus the bellows needs to expand and contract.

Like about 1/16 inch as you adjust + / - 3KHZ.
less than 1 turn on the front panel knob.

Time to get out the good non radio flux.

Take the bellows out of the deck.
Bo some good solder prep like
to repair an auto radiator back when they were real metal.

Copper pipe flux may work well.

Just run a bead of solder across the crack.

The loss of one bellow section will not impair
the operation of the device.

I hope Fair Radio still has some bellows on hand.
You do need to ask Fair Radio for what you want.

Demand by part number volume is low compared to
cost to get it printed in the catalog or maintained 
on a web site.

Please do ask here first for parts.
Several Fellows do have stock for sale.
But again the cost / time to advertise exceed return on investment.
These Fellows do not have everything.
So then do ask Fair Radio.

Bellows are also available as stock drive parts
from other sources. These items will not be the
part that leaves an R390 non repairable.

Roger AI4NI