Below are the SWR plots for the 5 band LightningBolt
Quad. The quad is fed through a 1:1 balun which feds all five
driven elements in parrallel through a single feedline. The SWR
measurements were taken at the transmitter end of the feedline through
approximately 160 feet of LMR-400 Ultraflex coax cable. The SWR
shown is the result of following the assembly instructions. No
additional adjustments were made after assembly. For my
installation, the 20 meter and 15 meter driven elements appear to be a
little long, but they are close enough since the SWR is below 2:1
everywhere.