Dogwood,

with respect to the doppler shift software please go to Philly’s hompage

http://www.philsrcworld.fsnet.co.uk/speed.htm

and for more details to John Hughan's hompage

http://www.alphalink.com.au/~hughan/frames.html (Low Cost Speed Measurement by Doppler)


And you may want to try these older but very informative threads here on RCU:

“Measuring speed with acoustics and a tape recorder...“
http://www.rcuniverse.com/forum/m_47.../tm.htm#479136

“How Fast is it going?“
http://www.rcuniverse.com/forum/m_11...tm.htm#1152581

“Speed trap“
http://www.rcuniverse.com/forum/m_84.../tm.htm#847920