Quote Originally Posted by Dick Ivers View Post
Good suggestion, but alas, I do not have a scope.
Not a problem! Capture the signal train on your sound card, and see it thru' a sound editor like Audacity as described on Dave Houston's website. Or alternately, for these frequencies a sound card based scope like the one at http://www.zeitnitz.de/Christian/scope_en (my favourite) would work fine. WYSIWYG!

Just remember to scale down the logic levels by 10:1 or more.

Regards,

Anand