56 Ultron UK used/good 1952 (4.5ma)
By Tube World
$ 8.99
56 Ultron UK used/good 1952
4.5ma
Gm=1300
Tested on Amplitrex:
Vplate=250V
Vgrid=-13.5V
Iplate good range = 4.5-5.5ma
Good used Gm=1200-1300
(Vfilament = 2.5 volts)See more: vacuum tube
Share:
&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_3ba639ca-923c-4e0b-933f-94dba0704211.jpg?v=1571439164){kind=link}
 "Pin It")