[time-nuts] Practical considerations making a lab standard with an LTE lite

Bob Camp kb8tq at n1k.org
Mon Nov 24 19:28:46 EST 2014


The Linear LT1764 is a pretty good part. It’s nice and rugged / tough to kill. Bypass the output with a few hundred uF of tantalum caps. Keep at least a volt between input and output. 


> On Nov 24, 2014, at 7:12 PM, Jim Sanford <wb4gcs at wb4gcs.org> wrote:
> Said:
> Several times you've mentioned a low noise LDO regulator.  I've not seen a device specified -- can you share?
> Also, yesterday, in response to my question about using an existing antenna, you basically said, "Try it."  Well, I did -- working great for over 24 hours.  At this moment, I have good lock on 9 GPS birds and a "3d/gps" fix mode reported by U-center.  Interestingly, there are a few GPS birds that show up as blue, even though they have the same C/N ratio as some green birds.  One of them is at 89 degrees elevation -- no blockage like some to the west -- don't get that.
> Anyway, wanted to share that my existing antenna seems to be working fine!
> AND, my first 10 MHZ board arrived today . . . .
> Thanks,
> Jim
> wb4gcs at amsat.org
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