In
JIMMIE wrote:

I bought 3 old cell phones at a yard cell the other day to tinker
with. These are GPS equipped. I was wondering it would be possible to
take a signal off of these I could use as a time reference. At work we
have such a reference that supplies 10Mhz, 1Mhz 1 Hz and I think there
are other frequencies. I opened one up and dont have a clue to what
any of the chips do. Any help would be appreciated.

Rather than beating your head against a wall trying to figure that out, why
not look into a GPS module? You can get a Garmin GPS15 for less than $50.

https://buy.garmin.com/shop/shop.do?cID=157

I'm sure there are similar products from other makers.


--
Bert Hyman St. Paul, MN