Spitfire Variations
2 or 4 switching directions
Adapts easily to nonresonant towers (i.e. not l/4)
Scales to other bands (80, 40)
Space-saver single-wing (reflector) Spitfire in development
More gain with arrays of Spitfires. . .
Notes:
The Spitfire array is a flexible design which has a number of installation possibilities. We have already discussed the 2- and 4-direction versions. Computer modeling indicates that the concept works well over a wide range of tower heights. Resonance of the tower on 160 is not a prerequisite for good performance. The design has been applied to the 100 foot loaded tower at K1VR and modeling with towers as tall as 180 feet indicates excellent results, too. The folding geometry of the wings is simply modified for different tower heights. We also have scaled the design to 80 and 40 meter versions. Another variant, which may be of interest to those who are space-challenged, uses just one parasitic wing element and is under development. Finally, for those who are seeking the “ultimate”, even more gain can be obtained by phased arrays of Spitfires...