[Amps] 2 x 8877

[Steve Thompson]

Ed Briggs wrote:
> Regarding glass windows, I've seen them in pictures, and always
> wanted an amp with one, but was always concerned about RF leakage and
> the possibility of long term exposure to VHF harmonics, particularly
> when I got up close to the window to admire the tubes.
My guts tell me it's unlikely to be a problem. A modest viewing window is
going to be a tiny fraction of a wavelength and thus a very inefficient
radiator, and the energy in harmonics where it will radiate effectively
should be low. If you add metal round the edge so that you're looking
through a 'tube', you can cut radiation dramatically, although I don't know
what the relationship between the dimensions of the window and the length of
the tube needs to be.

Steve