I have DB 664 (VHF) clamped directly to a tower leg with all elements facing one direction and it works nearly as well off the back side range wise.
I think you will have to go with a real corner reflector to knock it down any noticeable amount. Experiment away and let us know your findings. tom Dan Hancock wrote: > > > I have a repeater that I need to have as tight a cardiod pattern as > possible. I have looked at the dipole antennas such as the DB-411 and > they don't really shut down the back door quite enough. > Does anyone have any antenna modeling software that would show the > result of adding an 18" wide screen to the back side of the mast on > the DB-411? Does anyone have any experience in home-brewing a > modification like this? > > Dan Hancock N8DJP > > > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.425 / Virus Database: 270.14.73/2513 - Release Date: 11/19/09 > 07:51:00 > >