[GreenKeys] [OT] R-105B Freq. Standard

[Don Robert House]

The R-1051 also has a jack on the back for an external oscillator input.

There is a brand new oscillator on ebay from Columbia electronics  
still in the packaging.
You might have to cobble a mounting and supply power to it
as it is for an Army G-106 transceiver.

Don
K9TTY


On 9 Mar 2009, at 2:20 PM, Geoff Fors wrote:

Jerry, there's an R-1051 reflector at QTH, which you might want to  
subscribe
to, as there has been some semi-recent traffic about this issue over  
there.

The frequency standards should be the same module from B through at  
least D
and
probably H, although there are some different internal designs as they  
get
newer.  I am not sure whether the no-suffix R-1051's module is the  
same as
the others.

It's my understanding that the oven has to be right or the crystal  
will not
oscillate at the right frequency, or maybe at all.  The oven  
controllers and
the bridge circuit they use are a known problem with these standards.

The ones Fair Radio has are $ 30, but their catalog says "outputs may  
need
repair, crystal is checked."  The crystal is probably OK in your unit as
well, so you would be gambling that their module itself will work.  If  
not,
you're back to square one.

Geoff
WB6NVH

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