Heath ET-3400 / ETA-3400 Anyone?

steve shumaker shumaker at att.net
Sun May 3 19:26:36 CDT 2015

There is a Yahoo group named "ET3400" that has manuals, schematics, 
projects etc. posted in the files section

On 5/3/2015 1:46 PM, drlegendre . wrote:
> (Still in SBC mode..)
> I'm feeling a need for one of the Heathkit ETA-3400 memory&  I/O expansion
> units for my ET-3400.. or at least a set of documentation such as could be
> used to build one of my own.
> Anybody have an ETA-3400 they'd be willing to part with..? A set of docs in
> PDF?
> As it sits, all I've got here is a copy of the ET-3400 'Modification
> Manual' which details the changes which must be made to the ET so it will
> connect to the ETA module.
> Thanks for any assistance..

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