[TenTec] Some Observations on Orion Stability/Calibration

Mark Erbaugh mark at microenh.com
Wed Jun 4 16:05:43 EDT 2003


The late Rear Admiral Grace Hopper used to give out 'nanoseconds' at her
lectures. They were foot long pieces of wire, indicating the distance an
electron can travel in a nanosecond.  So I would guess that your delay is
roughly 58000 nanoseconds.

Mark

----- Original Message -----
From: "Jim Reid" <jimr.reid at verizon.net>
To: <tentec at contesting.com>
Sent: Wednesday, June 04, 2003 13:56 PM
Subject: Re: [TenTec] Some Observations on Orion Stability/Calibration


>
>
> > This has given me some ideas for synchronizing signals
> > around the shack,  including the use as an ultra-high stability
> > reference for my RX-340....
> > I just ordered the set from www.buylegacy.com
>
> Hmmm,  well I am tempted,  but....
>
> I live maybe 11 miles East of the WWVH antenna farm
> here on Kauai.  I suspect the  ground wave signals I rcv
> from them here have pretty good time accuracy,  hi.
>
> They are available at 2.5 (an omni antenna), 5, 10, and
> 15 MHz from VH.  How many nanoseconds per mile at
> light speed?  Doppler shift on ground wave?
>
> Is there a real point in my also ordering a GPS time standard?
> Or,  should I spend the $350 to be sure?
>
> 73,  Jim  KH7M
>
>
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