Here's how the SteppIR UrbanBeam compares to a 5 band (20m-10m) G3TXQ Broadband Hexbeam. Free Space, no additional transmission line loss for either model. The green dot caption in the upper-right corner of each frame in the animation shows the gain difference between the two antennas. Frequency is shown in the lower-right corner. 40m/30m for the UrbanBeam not included.
https://s1.postimg.cc/6k6jgvuqvz/Urban_Beamani3.gif
Matching detailed specs.
https://s1.postimg.cc/1580ygf62n/Compare_UBHB.png
For more information on the G3TXQ Broadband Hexbeam see Steve's page
http://www.karinya.net/g3txq/hexbeam/
and the various sub-pages under that. His EZNEC model can be downloaded from the "Modelling - 2" sub-page.
To download an AutoEZ format model of the SteppIR UrbanBeam see:
http://ac6la.com/aecollection10.html
Dan, AC6LA
SteppIR Urbanbeam tegenover Hexbeam
SteppIR Urbanbeam tegenover Hexbeam
Life is too short for QRP.