[GreenKeys] Shipboard Teletype

[Bob Camp]

Hi

The single board construction of the 590A bottom board makes it  
easier to keep running.

Bob


On Sep 20, 2007, at 6:11 PM, Peter Gottlieb wrote:

> 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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