Price is for 1 very little used tube. With O-getter with one support, ribbed folded plates and etched code I65 𝛥3J3 decoded for Heerlen plant in Holland. Tube is produced in the 1960's.
Tested STRONG as follow!
Ia1 = 1.4 mA | S1 = 1.7 mA/V | Ri1 = 47.6 | μ1 = 80.9
Ia2 = 1.1 mA | S2 = 1.5 mA/V | Ri2 = 57.1 | μ2 = 85.7
Tested at: Uf = 12,6V | Ua = 250V | Ug1 = -2,0V
Good begins at: Ia = 0,7mA and 100% is Ia=1.2mA
Shipping will be Airmail registered with tracing number. Other shipping methods available on request.