2009/6/13 Gary Fiber <gfi...@comcast.net> > More than likely for radio frequency tuning. Using an encoder to > control the tuning of a Direct Digital Synthesizer. Tuning up and > down in frequency in as small as 1 Hertz increments. > For my High Sierra HS1800/Pro adjustable antenna, I utilize SWR > readings to adjust it. > I also have an automatic device that controls the radio tuning > sequence and then runs the motor of the antenna until the SWR > measurement is where I set it to be originally. > > Step motors however would be very useful for satellite communications. > > Gary Fiber K8IZ >
Maybe so, but the DIY'ers I read about use them for _antenna_ tuning - ro rotate the big thing outside that is. (The radio hobbyists I know love gardens, not as much for the apple trees as to fit a bigger antenna...) ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
