[Milsurplus] What is the replacement fr RCA-991?

[Mauricsch at cs.com]

You can buy the RCA 991 from Leeds Electronics. http://www.leedselect.com/
I have brought the 991 from him to restore a RCA TK-1C monoscope camera

Maurice Schechter


john p hutchins <olegerityincj at austin.rr.com> wrote:

>Group - I need the expert help!
>
>I have seen some specs that indicate that the replacement for a RCA-991 
>may be a NE-48/B9A
>Yet I received an Email from a supplier that the replacement for an 
>RCA-991 is NE-16/7AA
>
>I cannot find and RCA-991 specs online  (:-{  Cannot find specs for 
>NE-16 or 7AA
>B9A specs sate 80-125V @.002A or 2mA  (no lower than 80V after 100Hrs of 
>operation 105V Average)  the B9A seems to have the correct base also.
>
>Thank you
>John Hutchins
>
>
>
>
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