[time-nuts] Practical considerations making a lab standard with an LTE lite
saidjack at aol.com
Mon Nov 24 20:27:32 EST 2014
Bobs suggestion is good; look at for example the LT3060 for something that needs less than 100mA.
Glad your antenna is working well. What C/No numbers is uBlox indicating?
Sent from my iPad
On Nov 24, 2014, at 16:28, Bob Camp <kb8tq at n1k.org> wrote:
> 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:
>> 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 . . . .
>> wb4gcs at amsat.org
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