[GreenKeys] Shipboard Teletype

[Peter Gottlieb]

Performance wise, the units are so close it is hard to tell the 
difference from the outside, so why do you want to upgrade?

Some of those batteries have leaked and caused a lot of damage to the 
traces of the processor board, so be careful about that point.  I don't 
find the battery that hard to get to.

Peter



Bob Camp wrote:
> Hi
>
> I have a couple of RF-590's in the basement. I would love to upgrade 
> them to 590A's.
>
> My guess is that if you turn the radios on you will come up with "self 
> test error" on the front panel. There's a rechargeable battery buried 
> deep in the front panel assembly. When it runs out of juice the CMOS 
> that holds the channel data comes up dead on the power on self test. 
> It's a chore to replace, simply because you need to dig in to get at it.
>
> Bob
> KB8TQ
>
>
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