28.8k Supra Modem ext on a //GS?

[ai260@FreeNet.Carleton.CA (Daniel Pfarrer)]

I remember seeing some card for the //GS that would allow a 28.8k modem to
run smoothly on the //GS for about $30. If such a product exists, does
anyone have an idea as to where I can get one?
Thanks!
--
Daniel Pfarrer                              SBA: daniel.pfarrer@sbaonline.gov
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