[TenTec] Paragon II model 586 questions

[GARY HUBER]

I found Jameco has product in stock for $13 at 
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_114260_-1 
the data sheet says that each chip has a AABB (year year week week) date of 
manufacture string.  It appears this is new stock.  YMMV

73 ES DX,
Gary -- AB9M
-----Original Message----- 
From: Carl Moreschi
Sent: Friday, October 05, 2012 1:03 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Paragon II model 586 questions

I wrote the firmware for the Paragon II.  The firmware resides on the
Microprocessor chip not the RAM/ROM/RTC chip.  That chip contains all
the non-volatile memory.  The memory persists because of the built in
lithium battery.  Buying a new chip presents the problem of how long the
new chip has been sitting on the shelf.  The lifespan of the battery is
strictly by time and not by usage. A new chip that was made in 1993 is
just as likely to be bad as the one in the Paragon II.

On 10/5/2012 1:57 PM, Mike Bryce wrote:
> Well now, I'm not too sure about that.
>
> without looking at the schematic, but I'd guess that this RAM/ROM/RTC has 
> some sort of firmware installed at the Ten Tec factory.
>
> It's this firmware that gives the Paragon II its personally.
>
> Installed a new "empty" RAM/ROM/RTC to me just wouldn't work.
>
> It's the same reason why you can't put in a new uprocessor in a Corsair II 
> when the display goes wacky. A new chip, but without the firmware, it 
> won't work.
>
> mike, wb8vge
>
>
>
> On Oct 5, 2012, at 1:31 PM, GARY HUBER wrote:
>
>> Looks like Mike nailed it. $20 in parts to fix the problem. See the data 
>> sheet at 
>> http://www.alliedelec.com/images/products/datasheets/bm/DALLAS_SEMICONDUCTOR/70127784.pdf
>>
>>
>> 73 ES DX,
>> Gary -- AB9M
>>
>> -----Original Message----- From: Mike
>> Sent: Friday, October 05, 2012 8:34 AM
>> To: tentec at contesting.com
>> Subject: [TenTec] Paragon II model 586 questions
>>
>> Hello Pete,
>> Ref the Paragon II
>> The Dallas DS1220y-200  mem chip on the RAM/ROM/RTC board
>> at U2 needs to be replaced....
>> 73 Mike
>
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>

-- 
Carl Moreschi N4PY
121 Little Bell Dr.
Hays, NC 28635
www.n4py.com
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