[ForSale-Swap] Tube data needed

[jcw1231]

anybody have the volts/mils typ/max for plate, screen, control on
the Amperex 8509?  Is info in any edition of ARRL handbook?

I have two transceivers that use these that I want to add additional
modes to.

Also, I have a rig on 440 (GE) with identical looking tube, but dif
number, hard to read, looks like 4907; same base and internal
structure as 8509, also Amperex.

thanks

Hans

(been away due to family illness/death, will be contacting some of you
off list re transactions)