need a 100K-Megaohm resistor (100 Giga-Ohm)

[J. Forster]

The electrometer tubes often getter with use.
-John

Bill Fuqua wrote:

> Another issue is getting a good CK5886 electrometer tube. These are hard to
> come by nowadays and about half of them have a bit of gas in them. Enough
> to make them useless due to ion currents. You may have to get several
> before you find one with low enough grid current.
>
> 73
> Bill wa4lav

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