You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

No different than a horizontal antenna. Every antenna has published specs and one of those specs is half-power beamwidth. That is how wide the main lobe of the antenna is as measured between the two points where the signal is down by half which is 3 dB. Unless you plan on stacking some long boom yagis you need not worry too much. The Cushcraft 17B2 17 element yagi has a half power beamwidth of about 28 degrees by itself before stacking. Horizontal beamwidth only changes when antennas are stacked side by side. Stacking one above the other results in the same beamwidth as a single antenna but the elevation angle is lowered.

[QUOTE="Captain Kilowatt, post: 543073, member: 39"] No different than a horizontal antenna. Every antenna has published specs and one of those specs is half-power beamwidth. That is how wide the main lobe of the antenna is as measured between the two points where the signal is down by half which is 3 dB. Unless you plan on stacking some long boom yagis you need not worry too much. The Cushcraft 17B2 17 element yagi has a half power beamwidth of about 28 degrees by itself before stacking. Horizontal beamwidth only changes when antennas are stacked side by side. Stacking one above the other results in the same beamwidth as a single antenna but the elevation angle is lowered. [/QUOTE]

Top Bottom