Jan 2, 2013 #1 V vedagarbhamsandeep Full Member level 2 Joined Apr 15, 2008 Messages 121 Helped 17 Reputation 34 Reaction score 14 Trophy points 1,298 Location Bangalore Activity points 1,932 Hi, can anyone help me out with some ideas on how i could achieve the attached specifications.
Jan 2, 2013 #2 P pstuckey Full Member level 4 Joined Oct 5, 2011 Messages 220 Helped 84 Reputation 168 Reaction score 83 Trophy points 1,308 Location Virginia, USA Activity points 2,486 This is not an omni antenna, it has beamwidth in az and el of 160 degrees. It may be a helical design, although the dimensions seem a little small for 400 MHz. But the beamwidth is very wide, so the numbers may work out. https://en.wikipedia.org/wiki/Helical_antenna
This is not an omni antenna, it has beamwidth in az and el of 160 degrees. It may be a helical design, although the dimensions seem a little small for 400 MHz. But the beamwidth is very wide, so the numbers may work out. https://en.wikipedia.org/wiki/Helical_antenna
Jan 3, 2013 #3 R rfmw Advanced Member level 2 Joined May 10, 2001 Messages 543 Helped 93 Reputation 190 Reaction score 51 Trophy points 1,308 Activity points 3,979 Might be that your antenna is Quadrifilar helix? Although I agree, the AZ angle spec should be 360 deg.
Might be that your antenna is Quadrifilar helix? Although I agree, the AZ angle spec should be 360 deg.