Those patterns always used to be listed in the back of their (Decibel) catalog.
Chuck WB2EDV Laryn Lohman wrote: > --- In [email protected], "Jim Cicirello" <[EMAIL PROTECTED]> > wrote: > >>Is there a recommended distance from the leg of the tower that a >>2-meter or 440 MHz Antenna should be mounted? I am going to have a >>couple of Antenna Mounts welded up and I wondering if they should be a >>1/4 or 1/2 wave from the tower leg or possibly an odd multiple? TIA >> >>73 JIM KA2AJH > > > I used to have a copy of that program, but it is on the drive of my > dead laptop. But the general, short answer is that at 1/4 wave > spacing you get more signal directly out from the tower-in line with > the tower and antenna. At 1/2 wave spacing, the signal is squashed > out at 90 degrees to the line between the tower and antenna, and > decreased straight out from the tower. I have confirmed this in > actual measurements, while remotely switching between a top mounted > omni and a 1/2 wave spaced antenna. Numerous measurements were made > in the field with an in-line attenuator feeding the receiver. > > Hmmm... have to get that DB program from somewhere again. Jeff? > > Laryn K8TVZ > > > > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
