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My comments were directed to Ed not you, however, can you please
explain to me what is the magical ingredient in your OSJ that makes it different than any other antenna known to man in that there will be no common mode current on a coax transmission line when directly connected to the antenna? I can't believe you are saying ALL antennas are exactly the same !!! Understand I am not saying your antenna doesn't work - never did say that. I will say that using a choke at the antenna's feed point will assure that the antenna will be operating at its best (maximum signal towards the horizon). By not using a choke can cause an increase to high angle radiation at the cost of reducing radiation toward the horizon due to common mode current on the transmission line - =A0just like any other VHF antenna feed with coax. There you said it again. In other words the antenna is still radiating the same amount of power, however, much of the your signal is being wasted in the wrong direction (unless you are talking to airplanes). For the sake of me I can't fathom why you can not understand that. No the antenna is NOT perfect. Adding a choke would not make it perfect. If it was perfect like you want, I might not be able to make contact with cross band repeater on a balloon at 60,000 feet 200 miles away. And still use a repeater 100 miles away, full quieting with 5 watts. Check the distance between Denver CO & Cheyenne WY. Your saying all antennas are the same is like saying all antennas with a gamma match have a skewed pattern.=20 73 Al Lowe N0IMW |