Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on June 16, 2015, 02:09:15 pm

Title: Are this tubes with top and side getter RFT el34 ??
Post by: kagliostro on June 16, 2015, 02:09:15 pm

Are this tubes el34 RFT tubes ?

they have top and side getter

(http://i.imgur.com/FY8euMx.jpg)

(http://i.imgur.com/U4gdmQ0.jpg)

Thanks

K

Title: Re: Are this tubes with top and side getter RFT el34 ??
Post by: super&plexi on June 16, 2015, 06:35:36 pm

I have some also that either have writing/markings  in a language foreign to me, or none at all.  I wonder if can compare with known tube. Can I/we just take readings with multi meter, and if similar, proceed?