Prototype set is here

[ohohyodafarted]

Originally Posted by Mal Fuller

As far as convergence & purity are concerned, are you sure that the CTC-2 chassis and this developmental CRT are fully compatible with each other?

It's Pete Deksnis here at Bob and Tamy's house for an overnight visit. Mal, it's a good question and I believe based only on physical shape, the two are not compatible. As to adjustments for purity are concerned, no, I wasn't about to shift that CT-100 yoke back and forth along the neck with 20 kV 1/2-in. from my hand. I did rotate the purity coil and it did affect the picture somewhat, but this was not the time for perfection... too many variables at play.

My CTC2 had been powered up for the first time yesterday since breaking down the RACS 15GP22 rebuild demo at ETF on May 1; since then it traveled over 1500 miles in the back of my Yaris, so I was very glad to see the HV still working (including the ozone if you were there seeing and smelling it operating at ETF!) and only the green channel not operational.

Glad to have been able to inspect the proto chassis up close; still many, many questions to resolve. Nick and Bob found a socket for a crystal, but there's no positive indication that it is for 3.579595 mc.

What a great opportunity we few had to participate in and witnesss such an historic event.

Pete

[TubeType]

Fantastic work Nick, Pete, and Bob! I'm really glad you guys were able to get to "First-Light 2011" in such a short period of time.

[miniman82]

Originally Posted by Pete

it's a good question and I believe based only on physical shape, the two are not compatible.

Correct. I was speaking more to the electrical compatability between the 2, and they seem to be a perfect match. Bob noted that the gun was almost identical to a production 15GP22 one, only a few added supports differ between them.

[Mal Fuller]

Wouldn't it be nice if you could lay hands on the engineering notes for your prototype? Delay line questions, burst frequency, convergence supply specifications, how and if high voltage is regulated, what tubes go where, the list seems endless.
It looks as if this thread could last a while. That's perfectly fine by me.