It is becoming harder to find electronic parts with pins or that are large enough to work with. The 3SK88 Dual Gate MosFet Transistor is large enough for hobbyist to work with. The 3SK88 is popular as an amplifier. Because the 3SK88 has dual gates one can be used to control the gain. The Dual Gates on the 3SK88 also make it useful as a Mixer.
The 3SK88 Dual Gate Mosfet is in an X type case and is useful into the VHF RF region.