Tesla and diathermy machines

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mildewhaus-at-aol-dot-com>

Hi guys! I recently bought an old short wave diathermy machine. I understand 
that befor the tube short wave machines,the machines were powered by a spark 
gap and Tesla coil.Does anyone have working knowledge of the Tesla model, and 
better yet the tube model.Mine has a large transformer(induction?) in the 
bottom.I can't get the tubes to "fire up". Any help? Thank you all
                                                                              
   john in nyc