And it's free! -) Once you get familiar with all the capabilities and features of the demo version, you will have acquired the know-how to design more complex antennas. The 'demo version' of the software is fully functional and more than adequate for most ham radio antenna design needs. EZNEC v5.0 This is my review of the EZNEC v5.0 antenna design program. You will find VE3SQB's entire collection of useful antenna software. A graph (bottom right) shows a SWR curve within the 'working' frequency range of the quad. As with most of his programs, you can choose between English (feet, inches) and metric measurements. All dimensions appear in the table on the right hand side. You just set the frequency for which you want to design a quad, indicate the number of elements, the wire size, and choose the type of gain you want. Using Version 3 of his quad design program is very straightforward.

Al has more to say about 'Why Quads'? At the following URL. Certainly much quieter! (Picks up much less QRN). Overall better on receive than a tri-bander Yagi with traps.Better performance in QSB and marginal conditions than the Yagi.Noticeably broader bandwidth response below a 2:1 SWR than a Yagi.Figure 1 illustrates the parabolic antenna. The parabolic dish antenna is the form most frequently used in the radar engineering of installed antenna types of. Home › Electronic Software › Parabola Calculator for Satellite Dish Antenna Design. Parabola Calculator for Parabolic Satellite Dish Antenna Design This. My experience has been that a well designed, 3-element tri-band quad has. Having had a GEM Quad (HF 20-15-10m) for a few years, back in the early 80's, I can testify to the quad's slight advantages over a tri-bander Yagi with the same number of elements. Enough to whet your appetite, I think! VE3SQB Antenna Software Al Legary - VE3SQB - admits that he is a 'quad' man. I only cover a small selection of his useful antenna software (below).

Parabolic dish antenna design software