Hi, I am hunting for some GS31B tubes for my 50MHz amplifier. Who has some NOS GS31B spares lying around in the shack that can be traded? Please reply via my personal email or here on the reflector. Vy 73, de Kees. pa7two (at) hotmail (dot) com AmateurRadio : PA7TWO - M5TWO Locator: JO22jp.