Low-Mu Triode
{Philco Long Pin Tube}
This tube unfortunately had to be Re-boxed in a white
box. The original box was crumbling to dust. The tube on
the other hand is Excellent!
The 99 Vacuum tube went by many names as you can
see from the preferred substitutes below. It is a glass
type used as a general purpose tube designed for dry-cell
operation. The tube comes with either long pins (UX) or
short pins (UV).
Electrical Data:
Heater Voltage ............................ 3.3 DC V
Heater Current ............................. 0.063 A
Preferred Substitutes ................. 99,
57TX99, 99X, 199, 199_CeCo, 299, 399, 2952, AX199, BX, B_CeCo, CX299, CX399, DX-199, ER-X199,
GSX-199, MX199, NU-199XOKX-199, NX-199, RayX-199, RH199_UX, UX99, UX199, UX299, X199