HV coupling and filter capacitors in VT-71 or other 7" sets

[ChrisW6ATV]

Hi-

Besides working on a Motorola VT-71 that I recently did restoration work on, I was making a list of high-voltage capacitors I will need for several electrostatic TV sets that I have. One thing I found out is that some of them (Hallicrafters and National, I think) appear to use ceramic capacitors for the horizontal sweep coupling, and maybe for high-voltage filtering in some cases as well. These are 500pF or .001uF capacitors, 6000 volt rated. Tom Albrecht did some excellent tests of several capacitor types in this discussion, starting in Post #19:

http://www.videokarma.org/showthread.php?t=260749

While Tom's tests were in the vertical deflection circuit, I may have already read that ceramic capacitors are OK in these sets in the horizontal circuits, but I want to know from any of you who has had experience with them. The main reason is, the ASC .001/6kV capacitors are now around $5 each, but there are Vishay ceramics that are available for maybe $1.00 or even less.

Any comments or suggestions? Thanks.