[Elecraft] K3 RTC - Battery and more

[David Ferrington, M0XDF]

Well, after 22 hours, the last 15 of which, its been off, the K3 RTC has
lost 4 seconds.
That seems rather high and was the same value yesterday for 18 hours, its
possible that the RTC is not losing that much time, but the reading of it is
incorrect in some way. If I can leave it off for 48 hours, I'll see if it
looses 8 seconds.
Very difficult to leave this rig off :)

Do you think a low voltage battery might account for the loss? Seems more
likely it works or doesn't, but I'm just wondering. I'll have to get the
cover off and check.

I confirm it does read the RTC and update the cpu time at power on.

On 25/1/08 11:22, "David Ferrington, M0XDF" <M0XDF at Alphadene.co.uk> sent:
[snip] 
>>> My K3 clock, which I set about 18 hrs ago and the rig has been off for about
>>> the last 12 of those, has lost about 4 seconds.
[snip]
> Yes, that's what I did - 4 secs for an RTC is not good. Are you positive it
> reads time on power up? I'll run more tests over the next few days.
> I'm using NTP to get time and setting my clock to that (with someone reading
> the time as I set it, so good to within a second). I have just set it, lets
> see what it is around this time tommorrow.
-- 
I know that you believe that you understood what you think I said, but I am
not sure you realize that what you heard is not what I meant.
- Robert McCloskey, State Department spokesman (attributed)