RCA CTC4: the barberized Seville

[jr_tech]

Originally Posted by ohohyodafarted

10 -6 torr is 1/1,000,000 of an atmosphere.

Actually it is even less than that... a torr is 1 mm of Hg pressure, and atmospheric pressure is 760 mm of Hg, so 10 -6 torr is 1/760,000,000 of an atmosphere.

jr

[ohohyodafarted]

Originally Posted by jr_tech

Actually it is even less than that... a torr is 1 mm of Hg pressure, and atmospheric pressure is 760 mm of Hg, so 10 -6 torr is 1/760,000,000 of an atmosphere.

jr

You are corrrect. I always get that confused because most of the scale on our militor meter is graduated from 1 torr to .001 torr and the top end of the scale from 1 torr to 1Atmosphere is only 1 graduation, so I always think 1 torr is 1 atmosphere. Sorry for my brain fart :-)

[Penthode]

Congratulations on the CTC4!

I have a question for CTC4 owners. I noticed that RCA in I believe this chassis only, tried to get away with taking the intercarrier audio directly from the video detector instead of having a separate intercarrier detector. The separate detector for intercarrier sound would facilitate better sound rejection to minimize the 920kHz beat.

I believe this was unique only to the CTC4. Do any of you with working CTC4's see the difference with later sets or actually see any detrimental effect of the possibly greater 920kHz interference?

[Penthode]

Another thing: was the title of this thread intended as a playful reference to the Rossini opera? I wanted you to know I appreciated the humor, intended or not.