[R-390] Beckman 905 WWVC Receiver

[Bill Cotter]

Roy,

The Beckman 905 WWV receiver is a very nice, modern 
double-conversion design and suitable for conversion to SWL or Ham 
usage. A quick comparison between the '905 and the HBR series, 
reveals a foundation for homebrewing a decent receiver with a 
modest amount of work (VFO, preselector, BFO).

The unusual audio filter circuitry can lend it self to a selectable 
bandpass design using the Ed Wetherhold 88mH toroid filters. The 
downside of the receiver is the great number of black/brown 
beauties that need to be replaced before serious usage. I believe 
there are 27 of these.

73 Bill N4LG






>Sandy,
>
>I have a Beckman 905 WWV Receiver.  It has no scope, a normal type 
>IF
>string, and does not compare.  I had it running well quite some time
>ago.  You are right, unless you love to listen to WWV, there's not a
>lot of use for these now.
>
>Roy
>
>Roy Morgan
>k1lky at earthlink.net
>K1LKY Since 1958 - Keep 'em Glowing!