UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

g4aaw pete · 9th Aug 2019, 4:17 pm

Hello Mike

If pins 2 & 7 are missing on the two in the middle, they're probably ARP12 with the metal coating removed.

Have a look at the Valve Museum picture:
http://www.r-type.org/exhib/aaa0572.htm

9th Aug 2019, 4:17 pm	#2
g4aaw pete Heptode Join Date: Jan 2008 Location: Birchington Kent, UK. Posts: 596	Re: Unknown valves Hello Mike If pins 2 & 7 are missing on the two in the middle, they're probably ARP12 with the metal coating removed. Have a look at the Valve Museum picture: http://www.r-type.org/exhib/aaa0572.htm __________________ Regards Pete