I have a 1968 Sylvania tube manual with no mention of that tube. That must be an old timer like me. Max Bonnell Bonnell TV Robinson, IL Sender: techassist-bounce@xxxxxxxxxxxxx From: hoytstv@xxxxxxxxxxx(Hoyt's=A0TV) Date: Thu, Apr 22, 2004, 7:12pm (CDT+1) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: anyone have info on this old receiving tube? Reply=A0to: techassist@xxxxxxxxxxxxx That's an old Sylvania part number. When Philips bought Sylvania they began changing them over to their own 10 digit system and soon after that to a 12 digit system. I have a NAP parts price book from 1983 which lists the old Sylvania part numbers in a cross ref. to the NAP numbers. That number isn't in there. Of course I didn't save all the old books when the new one came out each year. I do have a 1986 NAP price book and they don't list any crossovers in it at all. I assume it is a projo tube. If you can give me a possible year I will try to look it up in the microfiche service info. Russ Hoyt Hoyt's TV Exeter, NH ----- Original Message ----- From: <Royal19960@xxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Thursday, April 22, 2004 1:47 PM Subject: [TechAssist] anyone have info on this old receiving tube? Hi all. We ran into a few new/ old stock tubes by Sylvania. They are stamped 13-27681-4. Any of you guys remember what these are? Thanks in advance Roy Roy Adams Bonded TV Service 5158 W Forest Home Ave Milwaukee, WI 53219 414-541-9111 www.Bondedtv.com we have thousands of tubes on the site Webhosting from only 4.95 a month at Bondedhost.com ---------------------------------------------- ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/