[TenTec] OMNI 5 GOES DEAD ON 40

[Kim Elmore]

Is this a DS-1220Y or -1220AP IC?

Kim N5OP

"People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith

> On Feb 11, 2015, at 8:49, Peter Bertini <radioconnection at gmail.com> wrote:
> 
> Well, I had a few opened up, but it is not a "chip," but a chip encased in
> a plastic case on a DIP header.  The IC inside does have a pin for the
> external battery, but in the module the pin is bent back 180 degrees and
> does not exit the header. The battery is internal, and soldered directly to
> the pins of the IC.
> 
> Yes, it is possible, with some skill and patience, to open the part, dig
> away at the filler, and expose the IC--the device could be modified to use
> an external lithium batter in a holder, and the radio would also need some
> minor mods.
> 
> As I recall, this part, which is a Dallas Time Chip with internal ram,  is
> soldered to the board in the Paragon II.  I added a socket, which is NOT an
> approved modification according to the TenTec factory.
> 
> I could provide some photos, but my guinea pigs are lost in the morass of
> my unkempt shop. I figured I'd cross that bridge when the chips were no
> longer available. My CAT-1000 repeater controller uses a similar Dallas
> Time chip for date, time and to store controller parameters.
> 
> regards
> 
> Pete, KIZJH
> 
> I just did a quick Google, and found that this is not uncharted territory:
> 
> http://www.classic-computers.org.nz/blog/2009-10-10-renovating-a-dallas-battery-chip.htm
> 
> 
> *O.K. I will be the first one to ask. Has nobody figured out yet where the
> positive and negative battery terminals are on this RAM Chip? Maybe I have
> just ask the Stupidest Question, ever ask on this forum. I have never seen
> one of these RAM Chips. Can somebody please send me a picture of an example
> Chip? It just seems to me that some fine wire leads and a battery holder
> with the correct voltage of batteries installed, could place an end to the
> whole problem. Aw Shucks, you could even install a small solar cell
> illuminated from an Ironman or Batman 7 watt nightlight ..... hi .. hi ...
> This is a good question ( I Hope ) Maybe the Internal Battery shorts to
> Zero Ohms? So that an outboard battery won't work? *
> *      As Johnny 5 Says .... Need Input !! 73 from Wade/KJ4WS*
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