Rhomboid Antennas for UHF


Dimensions are in Inches
  435 MHz 910 MHz 1255 MHz
Boom  A-B 234" 112" 81 1/4"
Rear, Front
A-I, J-B
84" 40 1/4" 29 1/8"
Center I-J 66" 31 1/2" 23"
Spreader Rear C-D 87" 41 5/8" 30 1/8"
Spreader Center E-F 125" 59 3/4" 42 5/8"
Spreader Front G-H 36" 17 1/4" 12 7/16"
L1: A-C, F-H,
A-D, E-G
93 1/2" 44 3/4" 32 3/4"
L2: A-E, D-G,
A-F, C-H
161 1/2" 77 1/4" 56"
These dimensions were copied off an internet web page from a scan of a rather indefinite sketch.  I think the boom and spreader measurements are OK, but if you plan to build one of these you should try to check the geometry for yourself.