[AMPS] info on tubes required

[measures]

>
>Thanks to all who responded to my query.  It seems the tubes may be 
>TB3/750 which are
>similar to the 3-500Z.
>
€  John:   Did you notice that the Mu is 25 for the TB3/750?    
The Mu of a typical 3-500Z is 130 - 190.  A tube with a Mu of 25 is not 
going to work in a grounded-grid amplifier.  

>I have passed on the info to the ham concerned.  Once again tks.
>
>John	ZS5JF


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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