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I have a Velocity - and am planning on using a Comant CI-105 
		
	
		
		
		
		
		
	
		 
		
	
	
	transponder antenna, and place it out on the wing strake area - as I do not want it close to the engine and near my AHRS setup. As this airplane is a glass airplane, and this antenna requires a ground plane - I have read about a "tuned" ground plane. The suggestion was to make a 5.2" disc - @1090Mhz, 1/2 wave is 5.15229..." Can someone give me a heads up as to what a tuned ground plane really is? Thanks, John  | 
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