[R-390] sitting on the same coils

[Perry Sandeen]

Hi Mike,

FWIW

When I was stationed at the Karamursel Air Station base receiver site we had six or so R390A’s in relay racks that were on fixed frequencies 24X7.  The only time that changed is when we did a routine PM check every six months which they always passed.  In the 18 months I was there they never failed.  And they had been operating like that long before I got there.

We did have multiple muffin fans mounted on a large piece of sheet metal that were mounted in the base of each relay rack for cooling.  The bad part was at night when it got cold there was no  thermostat control on the A/C so one had to wear a field jacket on mid-shift (11PM to 7AM) even in July.

I would have loved to have gotten one of them as surplus.  They looked inside and out like they had just come from the factory. 

Regards,

Perrier