300b valves

[Jonboy]

http://i419.photobucket.com/albums/pp272/jonboy_01/DSC_0031.jpg
Hot Tubes, has anybody heard of these valves? they seem to be made for Audion
http://i419.photobucket.com/albums/pp272/jonboy_01/DSC_0026-1.jpg
http://i419.photobucket.com/albums/pp272/jonboy_01/DSC_0029.jpg

i can't seem to find any info on them, i'm running four of them in a pair of Audion Silver knights and one tube is now producing a high pitch whistle. i have got a spare pair of Shuguang that i'm using on one of the blocks not good i know but what do you do ?

[Mike]

Hi Jon,

Those 'globes'... are they TJ 'Meshplates' by any chance?

[Jonboy]

Mike but they have now been sold, but we did find an exact match for a spare with no marks on it and i think it was Russian.The whistle turned out to be a loose speaker connection

Cheers

[Mike]

OK, but were they meshplates?...

I've developed an interest in 300B's all of a sudden! :)