Diagrams, plans, pictures and DIY Kits for sale found in the provided link:
Hmmm....mclapp's website is apparently off-line today.....try again later....
I just sent a heads up to mclapp for him to follow up if need be....
M4 is similar to the steel Coathanger style 4-Bay Antenna you built, except bigger,
using either Aluminum or Copper solid wire...and preferably with a Reflector:
BowLength = 10.0-in (length from tip of AWG8 Whisker to AWG12 Feedline),
Tine Separation = 5.5-in (vertical tip-to-tip), Inner-Inner Bowtie Spacing = 9.5-in,
Inner-Outer Bowtie Spacing = 9.5 (distance between centers of Bowties).
Feedline Separation = 1.25-in, with 1.0-in at Crossover. Center of Crossover
3.125-in from Center of Outer Bowties.
Double Angled Screen Reflector, 16-Gauge, 40"Hx36"W, with outer 10-in bent forward 2.5-in,
Grid = 1"H x 2"W. Separation of Reflector from Bowties=4.5-in (at centerline). [Rabbit Cage/Fence material.]
Additional information and pictures can be gleaned by scanning through the following
4-Bay Bowtie thread: http://www.digitalhome.ca/forum/showthread.php?t=100137