[Boatanchors] For Sale NOS 6146 Tube

[Charles Ring]

On 4/14/2014 0920, Bob Jackson wrote:
> No box. Glass etched "6146 AEB". Base printed "RCA Electron Tube" and "IBM Part No. 3000533". Tested good on Hickok 600A with 6250 transconductance measurement. $35 w/free shipping CONUS. 14 day return - buyer pays return shipping.
>
> Bob  AG5X
> _______________________________________________
>

What did IBM use the 6146 for?

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*Charles Ring W3NU*