A little CRT fun

[jr_tech]

Originally Posted by Sandy G

Welcome, Mr Keller ! You're among friends here ! (And fellow "Kooks"-grin...)

Ditto that! indeed KOOKs!

I have been having difficulty getting a decent photo of one of my favorite tubes in my collection, the 2F21 Monoscope, used in early TV broadcasting to generate the "Indian Head" test pattern. This is about the best that I have achieved. Note that some paint was removed from the outside of the tube so that the pattern can be seen, normally the entire front of the tube would be painted black.

jr

[bandersen]

Originally Posted by ChuckA

Here's a 5 gun 9ZP1 CRT from my CRT collection:
Chuck

That's really cool. Was this used for a 5 trace oscilloscope ?

Originally Posted by jr_tech

Ditto that! indeed KOOKs!

I have been having difficulty getting a decent photo of one of my favorite tubes in my collection, the 2F21 Monoscope, used in early TV broadcasting to generate the "Indian Head" test pattern. This is about the best that I have achieved. Note that some paint was removed from the outside of the tube so that the pattern can be seen, normally the entire front of the tube would be painted black.

jr

Wow! I've always wanted one of these I saw one months ago on ebay, but they wanted a lot of $$ for it.

[ChuckA]

Originally Posted by bandersen

That's really cool. Was this used for a 5 trace oscilloscope ?

Don't know, the only thing I have been able to find was a small blurb about the tube being used in a high speed display unit used by NASA for radio astronomy.

Chuck