There is also the 'draw on graph paper' technique.
Full details in the PC Board Menu section at
http://www.qsl.net/g3oou/ Regards
Bob
Bob F Burns G3OOU
C Eng, FIET, MSE
G-QRP 6907
Secretary of Crystal Palace Radio & Electronics Club: www.g3oou.co.uk
Technical web site: www.qsl.net/g3oou
@BobFBurns on Twitter:
http://twitter.com/BobFBurns[Non-text portions of this message have been removed]