[time-nuts] Re: HP Z3801A project update

[paul swed]

Ed these older units do indeed take hours to potentially sync. Powerup and
let go for 24 hours if its been off a long time. Normally doesn't take
anything like 24 hours. But if that much time goes by thats a really bad
indicator.
I actually add in the battery backup to the gps receivers. 2 X AA mounted
externally for easy replacement. That really helps.
Good luck.
Paul
WB8TSL

On Thu, Feb 24, 2022 at 12:41 AM Kit <kitscally at iprimus.com.au> wrote:

> Ed,
>
> I don't have any first-hand knowledge with the Oncore, but with 'other'
> GPSDO's that haven't been turned on for some time (weeks/months or longer)
> or almost always from a significant change in (antenna) location, there
> maybe a significant time lag before the (a) oscillator gets up to
> temperature/frequency and (b) for the internal search algorithm to figure
> out where any satellites are as the almanac in memory has either been
> dumped
> or the previous old QTH is used, hence all the satellite coordinates are
> incorrect.
>
> Try turning the kit off, wait 30 to 60 mins, power up again and see of it
> acquires 'lock' somewhat quicker.
>
> Kit
> VK1LL
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