A variation here is the EL-34, a true Pentode with a separate suppressor pin at the base. One version, the E34L from Penta (Teslovak) boasts a 32.5 watt plate dissipation. I use one in grid driven service on a modified Central Electronics 20A that make ~ 55 PEP on 80m in linear mode. It has 700V plate, and 300v G2 on it.
http://www.pentalabs.com/pdfs/EL34S.pdfIf I were to try this as a GG amplifier, I would include the filament as being driven like is often done with the 8877. This minimizes any heater to cathode leakage problems. I bet this series of tubes would do well as a RF amp when cathode driven.
Jim
WD5JKO
