Age of early CRTs - Videokarma.org TV - Video - Vintage Television & Radio Forums

		Videokarma.org TV - Video - Vintage Television & Radio Forums > Early B&W and Projection TV
Age of early CRTs

FAQ

Members List

Calendar

Notices

Time to get this site upgraded, so we are passing the hat around. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html


	We appreciate your help in keeping this site going.

Thread Tools

Display Modes

#12

09-02-2010, 02:30 PM

John Folsom John Folsom is offline

VideoKarma Member

Join Date: May 2004

Location: Melbourne Florida

Posts: 932

According to Peter Kellers THE CATHODE RAY TUBE, the 7JP4 was introduced by RCA in 1947. He also indicates the 7AP4 was introduced in 1940. Maybe there was no 1800 series equivalent number for the 7AP4...?

__________________
John Folsom

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules

Forum Jump

All times are GMT -5. The time now is 07:27 PM.