Bendix King KMD150

[BigEndBob]

So fitted new Saft battery, refitted unit, battery fail now gone.
Unit started up ok but thought it was off the coast of Africa.
OK i thought it will sort itself out.
So next day goes back to default 1/Oct/1998 position Goodwood.
Trying to set date and time, won't save nor position to speed things up.
Run for 15 minutes, not picking up any satellites.
STATE:No STATUS is the message gps page.

One would have thought battery holds the time/date/int. posn data.
Anyone any ideas, what's missing?

[JuicyLucy]

I did the same to a Skymap 3C a few weeks ago - IIRC they are the same internals…
Old generation GPS receiver needs a very good view of the sky, and a long time to find the first satellite, i think it took about an hour, once it found the first the others came along fast.
We are spoiled by the new generation with super fast acquisition times !

[Maoraigh1]

Has this anything to do with a change in satellite time code? My Garmin Etrex needed an update from Garmin a few years ago. (Still not done as it needed an XP computer. It works for nav but not astro data)

[BigEndBob]

Well removed the battery and the unit works normally, but for not remembering time/date or user preferences.
Have ordered another battery.
Tried to be clever and fitted a battery holder rather than the tagged battery, with non tagged AA type battery.
Now ordered a tagged, axial battery.
Will try that, if not, will just leave out for good.

[BigEndBob]

Well, bought another battery, Saft 3.6v axial tagged, soldered in, all working normally now and remembering presets and date/time setting.
Bit of a mystery why it didn't work first time around.