[Antennas] Loading coil design software?

[Rob Matherly]

Can anyone point me to a program (preferably free) that will aid me 
in designing a shortened 40 meter antenna?  I'm primarily needing 
something that is focused on loading coils.  What I am wanting to 
design is something similar to what was featured on page 14 of the 
October 2002 CQ.   

For those that don't receive CQ, the antenna is a 6 foot telescoping 
whip loaded by a coil.  The entire assembly then screws onto the so-
239 of your rig.  I'm wanting to play around with different whip 
lengths to see if I could manage to squeeze a little more RF out of 
it.

TIA

-- 
		  72/73/oo - Rob, w0jrm - w0jrm@arrl.net
	ARRL, FPQRP -330, SOC #497, QRPp-I #19, IAQRP #143,
			http://www.qsl.net/w0jrm