[Elecraft] Part substitution & transistor/FET spec list

[Ross Primrose N4RP]

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.”