In the last entry, I mentioned not being able to tune the antenna for an SWR lower than 1.5:1. Well, it struck me last night as I was falling asleep why this was so. When calculating the SWR, the Autek VA1 assumes that you’re using a 50 ohm feedline. D’oh!
Fortunately, the Autek allows you to change that setting. You can program it to a number of different values from 25 ohms up to 450 ohms. Now, I’ll just have to remember to do that when working with RG-59 or ladder line or whatnot.
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