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Old 15th Mar 2018, 5:42 pm   #5
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
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Default Re: Yaesu FT221,221R and derivatives

Thanks, Yes on a second look I do see differences in the front ends.
They went from a JFET mixer 2SK19 to a dual gate MOSFET 3SK51.

Of course once you have a Mutek you have a 3SK88 or BF981 in RF amp and a diode ring as mixer.
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