Re: Quick question on the CODAR AT5, if anyone has one to hand.
The series tuned circuit is intended to reduce the level of the 1.75-1.9MHz fundamental fed to the output stage when used on 80m.
It should be noted that, while better than nothing, there is still a significant amount of the 1.75-1.9MHz present on the output of the AT5 when used on 80m. It really would benefit from a high pass filter to clean up the output spectrum.
Paula
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