Re: Mini VTTC--Possible tubes?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

A question directed to Robert Stephens:
                                        There are a couple of *cheap* 
brand new 813's floating around in my neighbourhood. From what data I 
can find they appear to be beam tetrodes (which implies a pentode 
characteristic). The have graphite anodes. What is your opinion on 
their suitability for a tube coil (in terms of expected power output 
per bottle and ease of use)?

Thanks,
Malcolm