Additional Pictures 


The Montogomery Ward electronic D8F aka TXI-8647A looks similiar to
the Radio Shack EC-1000 but lacks the second slider switch on the small PCB.

The label of the Montogomery Ward electronic D8F states the
official  TXI-8647A designation.

If you have additions to the above article please email:

Joerg Woerner, December 30, 2006. No reprints without written permission.