In article ,
Tim Wescott wrote:

| That was useful, but I forgot to ask:
|
| Is the space (no pulse) frequency the nominal frequency, or is it (more
| sensibly IMHO) 1/2 the shift below -- or at least _some_ amount below
| the nominal?

Do not know.

--
Doug McLaren,
We can hike anytime. This is our chance to see cars driving. --Homer Simpson