= About removing cataracts =

[jr_tech]

Originally Posted by old_tv_nut

The regulator tube problem was not leaded vs. unleaded glass, but tubes that were constructed crookedly so that the source of x-rays at the anode was not blocked by the metal structure at the bottom of the tube. If a defective regulator was mounted vertically and had no shielding underneath, a kid sitting up close with legs under the set would have his legs in the path of the stray x-rays.

Interesting! But wouldn't the leaded glass envelope for the 6BK4 reduce the X-ray emission regardless? or was the stem/header at the base not leaded glass?
Our family cat got better after the 6BK4 was replaced with a leaded one.

jr

[marty59]

As to the front face, bonded or un-bonded there is the protection of x-ray shielding if followed in early interchangeability instructions as well as implosion protection. Even if the front glass is not leaded it would provide protection from "soft" x-rays being emitted as there is that "additional layer". Granted, leaded glass is better I know. The manufacturers' had to ensure precautions from a liability/safety standpoint as well as maintaining interchangeability standards for tube replacement back in the day.

As many of us may have noticed, a curved face for a 21FBP is about twice as thick as a 21FJP. The bonding does make up for some difference though.

I do believe we are plenty safe after doing cataract surgery although I will still maintain my distance!

I know of a retired CRT rebuilder and when he's back in town I'll run have to run this past him.

[marty59]

Originally Posted by marty59

As to the front face, bonded or un-bonded there is the protection of x-ray shielding if followed in early interchangeability instructions as well as implosion protection. Even if the front glass is not leaded it would provide protection from "soft" x-rays being emitted as there is that "additional layer". Granted, leaded glass is better I know. The manufacturers' had to ensure precautions from a liability/safety standpoint as well as maintaining interchangeability standards for tube replacement back in the day.

As many of us may have noticed, a curved face for a 21FBP is about twice as thick as a 21FJP. The bonding does make up for some difference though.

I do believe we are plenty safe after doing cataract surgery although I will still maintain my distance!

I know of a retired CRT rebuilder and when he's back in town I'll run have to run this past him.

My retired rebuilder guy used to work for Video Display Corp in Dallas. According to him, the bonded face glass was there for implosion protection more than anything and were not leaded.

[bluenorm]

video display rebuilt two tube for my and they still strong. I think the guy's name used to be Phill. They were located at Profit Drive. I missed their services. also Louis Stangle from united tuner repair.