View Single Post
  #3   Report Post  
Old March 20th 06, 10:09 PM posted to rec.models.rc.air,rec.radio.amateur.homebrew
Tim Wescott
 
Posts: n/a
Default Amateur Radio Control Shifts

Doug McLaren wrote:

In article ,
Tim Wescott wrote:

-- snip --

... so it looks like there IS a standard now, at least on the six
meter band stuff. I've heard some say that this isn't true, that
brand X 6m RX didn't workt with brand Y 6m TX, but details were never
really given.

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?

If I were designing such a rig I would have the space frequency (off, no
pulse, whatever) be 1/2 of the shift _below_ the nominal frequency, and
the mark frequency be 1/2 of the shift _above_. I may shade the space
frequency to be a bit closer to the nominal frequency to balance out the
spectrum, but I doubt that I'd stick it right onto the nominal frequency.

Thanks again.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/