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Via: http://www.jumlers.com/rec.radio.amateur.homebrew/

If I can throw in my two-penny-worth...

I have dealt with Mirrorbow Electronics, purchased their USB IO
board and it does exactly as advertised. their technical support is
100%, delivery is very quick and overall service is second to none!
I have no hesitation in recommending them to anyone. I only wish
some other companies would take a leaf out of Mirrorbows book for
customer service!

Off my soap box now...

73s, Jason G7KPM