Re: Part substitution & transistor/FET spec list

Posted by Ross Primrose N4RP on Dec 09, 2009; 7:52am
URL: http://elecraft.85.s1.nabble.com/Part-substitution-transistor-FET-spec-list-tp4134921p4137949.html

Al Lorona wrote:
> And yet, the lowly 1N34 germanium diode is still going strong. Why is this notable? I have a 1953 QST article of an antenna tuner designed by George Grammer which used a 1N34 in its circuit. That was almost *60 years ago* but you can still buy 1N34s at your local electronics store. That's pretty amazing. What other semiconductor (or vacuum tube, for that matter) has lasted that long?
>  
The 12AX7 has been around since 1947, and is still in production in
multiple countries...

73, Ross N4RP

--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.”

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