[NJARC] Oh no not the eye

[John Ruccolo]

Ray and Marty and All,

Hmmm....interesting question.

Now, here's the $64 question: are the eye tubes *dim* because of low cathode emission, or are they dim because the target phosphor screen is "tired?" (Or maybe both).

If the tubes have (very) low cathode emission, then they probably wouldn't be much good as amplifiers.


JR


--- On Tue, 10/14/08, Marty Friedman <radiomf at comcast.net> wrote:

> From: Marty Friedman <radiomf at comcast.net>
> Subject: Re: [NJARC] Oh no not the eye
> To: "New Jersey Antique Radio Club" <njarc at mailman.qth.net>
> Date: Tuesday, October 14, 2008, 8:02 PM
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Ray,
> I don't suppose the value of the Ruhf radio will be
> affected by the 
> substitution of vintage "dud" tubes with good
> amplifier sections. I believe 
> the  lowly Heathkit and Eico testers tested both the amp
> and the eye 
> functions.
>  I did notice one of those eyes had the desirable GE logo
> in the center. On 
> the other hand, perhaps Ruhf got the inspiration to build
> the thing because 
> he was sitting on a bunch of duds:-)
> Marty 
> 
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