RadioBanter - Machlett ML-500B tubes

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Ralph Cameron

April 8th 04 07:54 PM

Machlett ML-500B tubes

Trying to identify this tube. Is it a Machlett Labs ML-500B tube used for RF
heating or diathermy? Any specs.?

Have similar tube Siemens "GRI" almost identical construction. Large glass
bulb 20" long with two large grid connections.
Any info anyone?
Thanks
Ralph

Mike Andrews

April 8th 04 08:06 PM

Ralph Cameron wrote:
Trying to identify this tube. Is it a Machlett Labs ML-500B tube used for RF
heating or diathermy? Any specs.?

Have similar tube Siemens "GRI" almost identical construction. Large glass
bulb 20" long with two large grid connections.
Any info anyone?
Thanks
Ralph

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