[time-nuts] While we are talking about Z3801's

John Green wpxs472 at gmail.com
Mon Mar 5 08:27:01 EST 2018


When I removed it from storage, communication was gone. It took a very long
while to lock, but did so and maintained lock for a couple of weeks before
going into holdover. It then locked back for a while.
I definitely need to do more trouble shooting on it before I give up
completely. It was the best unit I have. I also have a couple of
Thunderbolts, but I don't consider them in the same class as the Z3801.
I see Z3801s for sale on eBay, but I am reluctant to buy one. They are at
an age where things are going to fail. Also, for my needs, a Thunderbolt
would suffice. I just like the Z3801 better and would really like to get it
going again.

On Sun, Mar 4, 2018 at 9:27 PM, Hal Murray <hmurray at megapathdsl.net> wrote:

>
> kb8tq at n1k.org said:
> > If still nothing, put a scope on the RX output of the serial chip in the
> > 3801. Do the same  for the TX input of the same chip.
>
> I think the Z3801A prints out a version string at power up.  Sometimes that
> helps debug the transmit path.
>
>
> --
> These are my opinions.  I hate spam.
>
>
>
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