[TenTec] Orion backup battery

[Rodney]

why don't we have a clock in the orion  the back up battery has a timekeeper 
in it for date, day,and time.  73 Rod

-----Original Message----- 
From: peterhills at comcast.net
Sent: Monday, October 10, 2011 4:57 PM
To: tentec at contesting.com ; barry.n1eu at gmail.com
Subject: [TenTec] Orion backup battery



Subject: [TenTec] Orion backup battery



TEN-TEC Sold me the ST Microelectronics M4T28-BR12SH1 Timekeeper snaphat 
lithium cell


for $5 + $3 shipping in January of this year. Note M4T, not Z.



It's [January 2011] data sheet: 
http://www.st.com/stonline/books/pdf/docs/13125.pdf was unfound today on 
internet.

The DIP Extractor tool pictured in above looked like simple, flat-sided 
tweezer to pry it up, with small teeth at ends to prevent dropping device.

[ orion565 at yahoogroups.com comments said small screwdriver works]



Its Jan 2011 still available ST Microelectronics Application Note:


http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/mXyyqty.pdf

Use- Life appears to be 7-10 yrs. Storage-Life could be much longer

Mine failed Jan 2011 after approx 7 to 8 yrs near-daily use


I hope this as helpful to you as your inputs to the site have been to me.

Pete W0HXB w0hxb at arrl.net
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