[R-390] Anyone else have R-390 case besides me?

Norman Ryan [email protected]
Thu, 10 Oct 2002 12:13:07 -0400


Hello, group,

Notice the slightly larger size of this cabinet
<http://www.geocities.com/courir26/Ed390A.jpg>.  It has more louvers, to
be sure, but also more space inside that likely promotes faster
convection.

This cabinet <http://www.pdq.com/boatanchors/cy-979a/cy-979a.jpg> is
identical to the ones Mac sold.  Its tag is marked CY-979A.

If an R-390 (non-A) in a CY-979A is operating at the normally higher
than nominal 115 VAC, heat build-up likely will stress components a bit
even though the radio is designed to operate at voltages 10 percent
higher or lower.

My Mac CY-979A cabinet has an R-390A running at just over 110 VAC by
means of a Variac.  Cabinet feels cozy warm and all is well inside. 
Elapsed time meter shows 735 hours since I rebuilt the receiver.

Would love to find one of those earlier version cabinets for an R-390
(non-A).

73 de Norman KG4SWM