[time-nuts] Re: GR 1115-C free to good home

[John Franke]

I would be very interested in providing a home, with power, for the oscillator. 

John M. Franke WA4WDL
400Ibis C.
Portsmouth, VA 23703

jmfranke at cox.net



> On August 1, 2021 at 3:56 PM Skip Withrow <skip.withrow at gmail.com> wrote:
> 
> 
> Hello Time-Nuts,
> 
> I am giving away a General Radio 1115-C 5Mhz Standard Frequency
> Oscillator for a friend.  All I ask is the cost of shipping, or it can
> be picked up in Denver, CO.
> 
> Unit comes with a manual (you can view it on KO4BB.com or BAMA boat
> anchor site), one GR874 to BNC adapter, MIL accessory connector for
> 24V and EFC input, and IEC power cord.
> 
> Crystal is a Bliley BG61A-5 (AT cut).  Oscillator uses a copper oven
> inside glass dewar, all foamed-in-place in an aluminum box that plugs
> into the main chassis.  I have verified that the oven is on
> temperature (76.4C indicated on xtal).  The oscillator was way low and
> I changed a couple of caps to bring it back in range.  The dead NiMH
> backup battery has been removed.  The power connector has been changed
> to an IEC type.
> 
> After about 5 weeks the drift is 5.5x10E-10/day and still falling.
> So, it does not currently meet the 1115-C spec, but does come close to
> the 1115-B spec (but who knows how long this unit has been in
> storage).
> 
> Good beginner unit.  There is external EFC control, so could be used
> to build a GPSDO.  Unit is 3U rack mount and weighs about 32 pounds.
> 
> If interested please contact me off line at the above address.
> 
> Thanks,
> Skip Withrow
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