Hello all, I want to build a small amplifier with a QB3/300 for HF or VHF. Is there any schematic available? I have some parts for build an amplifier with this tube. I have already made a HF amplifier for HF with 2*GI7B check http://www.pd3lhs.nl/?p=bekijk_album&id=26 Thanks! 73 Laurens PD3LHS