Re: 6-gang FM stereo tuner heads
I have read online some news group that someone suggested the use of 4:1 transformer in series with a 130 resistor for both ends of the ceramic filter tester. He claimed it would have a more broad band matching. I have used the Mini-Circuits TC4-1T+ to try out the idea and it turns to be inferior and poorer match in the Smith chart. It is better to stick with LC matching pad.
The TC4-1T is incredibly small, I wonder how it is possible to have the inductance of 400 microhenries for the secondary in such micro package.
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