Title: On line Tube Data and History? Post by: W1UJR on September 11, 2005, 12:12:25 PM I am trying to find out a bit more about the RCA 913 1" CRT tube used in early National scopes.
Does anyone have a site online where older tubes can be referenced as to date of introducion and other info? Tnx - Bruce W1UJR Title: Re: On line Tube Data and History? Post by: W1RKW on September 11, 2005, 01:00:22 PM Bruce here are a couple of websites. They seem to be the only ones I could find. Don't know if you've encountered them yet.
http://www.aade.com/tubepedia/1collection/tubepedia2.htm http://uv201.com/Tube_Pages/rca_913_crt.htm GL Bob Title: Re: On line Tube Data and History? Post by: W1UJR on September 11, 2005, 02:34:39 PM Excellent, thanks Bob.
I did find the second site, but the first one you listed was the info I needed. Seems the 913 tube was introduced in 1936, and the National CRM scope must have been produced right after. I'm doing a piece on the National CRM series of scopes for Electric Radio, but have found little data, so thanks for the leads. I have four of them fun lilttle scopes and they are most buzzardly. I currently use one with my HRO station, black crackle and green phosper, real boatanchor glowage. (http://www.io.com/~nielw/nat_list/crm.jpg) (http://www.brucehowes.com/images/HRO%20Glow.jpg) Title: Re: On line Tube Data and History? Post by: Jim, W5JO on September 11, 2005, 05:33:08 PM What kind of info do you need? My 1956 handbook lists the tube with the electrical specs.
Title: Re: On line Tube Data and History? Post by: W1UJR on September 11, 2005, 05:37:17 PM What kind of info do you need? My 1956 handbook lists the tube with the electrical specs. Thanks, did find the datasheet and year of introduction for the tube. Mostly need info on the CRM, when it was introduced, used, price, etc. -BRuce Title: Re: On line Tube Data and History? Post by: Pete, WA2CWA on September 11, 2005, 05:41:00 PM What kind of info do you need? My 1956 handbook lists the tube with the electrical specs. Thanks, did find the datasheet and year of introduction for the tube. Mostly need info on the CRM, when it was introduced, used, price, etc. -BRuce The back of the manual says Net Price $11.10 Without Tubes. |