In message 
          Jan Panteltje  wrote:

> 30 MHz has a wavelength of 10 meter.
> for distances on an eurocard (100x160 mm) board the transmission line issue
> is not very significant.

A common misconception is to relate these issues to the repetition rate.
It can be one cycle per fortnight, but if the transition times are short
(roughly a nanosecond or less), what arrives at the destination may have
more edges in it than were sent, unless the line is appropriately
terminated.

Whether there is a problem also depends on the bandwidth/speed of the
receiver.

David

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