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![]() How do all these various matching schemes affect bandwidth? 73, Tom Donaly, KA6RUH For the "L", it depends on the Q of the "L" network. You're not in charge of that, you have to take the Q that the transform gives you. With a constant inductor value, I can get pretty close to 1:1 clear across the band just by varying the capacitor value for the frequency. Of course, if you don't have any adjustable "C", YMMV. I'd think you need to get to a pretty high frequency before you didn't have to add "C" to whatever exists, but the big advantage of Voltage feed is that the current to the "Ground" is minimal. When you don't know that your ground is zero Ohms, you're better off putting as little current into it as possible. W4ZCB |
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