[TenTec] Corsair II Keyer failed.

[Mike Bryce]

Paul,

that’s a Microprocessor. You can them ‘em by the barrel but you can’t get the software.

not only does this thing do the keyer, it controls the frequency display.

Use an external counter and count (no pun intended!) your blessings that the display part of the chip hasn’t failed.


Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/
J e e p
o|||||||o 

> On Apr 5, 2018, at 12:28 PM, Paul K. <hglent at frii.com> wrote:
> 
> I am working on my Corsair II trying to locate a failed Iambic keyer.  I have located the problem to be with the MC68705P3 PROM.  This prom is not hard to find, however, I don't know anything about programing it to do the job in the Corsair II.  I need some advice on how to get it programed for the Corsair II.
> 
> Thanks in advance for the advice. I appreciate all the help I get from this group.
> 
> 73
> 
> Paul K.
> 
> WA0BAG
> 
> 
> -- 
> Paul K. WA0BAG
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