[time-nuts] WWVB Kinemetrics 60-DC EPROM failure

paul swed paulswedb at gmail.com
Thu Dec 31 18:17:38 UTC 2009


Boy that is a challenge. I do not have a dc-60.
I checked and I see kinemetrics is still in business. Though interesting it
looks like symetricom purchased the truetime division. Perhaps a call to
them might obtain a copy of that eprom.
Good luck

On Thu, Dec 31, 2009 at 12:07 PM, Jos <jos at mindspring.com> wrote:

> Happy New Year everyone,
>
>
>
>
>
> I am hopeful someone may be able to help me with my Kinemetrics 60-DC WWVB
> receiver. Recently, several of the caps in the power supply shorted and
> burned up its transformer, but not before frying one of the  5V regulators,
> placing about 15V on the logic boards (CPU and RS232 boards). I wasn't
> ready
> to part with the unit and decided to replace all IC's with new ones (and
> put
> them in sockets). The dilemma I now face is finding replacements for the
> two
> fried EPROMS (M2716's) that make this clock "tick".
>
>
>
> The EPROMS read as follows:
>
>
>
> C60522R7
>
> RS232 (LO)
>
> F1E1  5/22/84
>
>
>
> C60522R7
>
> RS232 (HI)
>
> A81E  5/22/84
>
>
>
> I would be grateful for any suggestions as to how I could obtain or burn
> replacements, and it does not have to be "Gratis". Please feel free to
> reach
> me directly at jos @ mindspring . com (minus the spaces)
>
>
>
> Many thanks,
>
>
>
> Jos / W4JOS
>
>
>
>
>
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