UPDATE, JULY 1, 2019, DAY 331
FIRST LIGHT AND FLASH
Author: According to the date codes, our 15GP22 was made between March 22-26, 1954. Our chassis was the 147TH produced. Tonight, 65 years after production we have first light from the 15GP22! YEA. Elation followed by a failure, a dreaded arc. Despite Mike’s efforts to control arcing, by pure luck, Mike caught on camera an arc inside the HV cage. Hmm, no arcing with the jigged CRT, but at first light, we get an arc. If you want to see the full resolution image of this event, tap on it to open the image carousel. Go here.
https://visions4netjournal.com/westinghouse/
From Mike: “Greetings. I fired up the CRT this evening. The focus is good and I am able to adjust through both sides of focus with the control. Very happy with the results there. I cannot do any more with adjustments until the “new” magnet arrives but I am able to display all three guns, such as they are with poor purity. The purity should improve after I receive the magnet since I will then be able to set the center convergence properly. There is always interaction between purity and the center convergence adjustments so it is pointless to try any purity adjustments until the center convergence is at least “close”. This is by no means a representation of CRT quality as yet but it is certainly a milestone in the process. Near the end of my photography this evening, there was a high voltage arc. At the time, I was unable to determine its origin. It left the 1AX2 focus rectifier damaged so there was some kind of connection to that circuit at the time of the arc. As it turned out, the last picture I shot before the focus rectifier tube failed, was caught on camera. It was between the top of the 6BK4 high voltage regulator tube and the chassis nearby. It is obvious that I need to do more with controlling the arcing issues both inside the cage and outside.
Picture #1 Red
Picture #2 Green
Picture #3 Blue
Picture #4 The ARC
Cheers, Mike”
