I didn’t know this Change page existed until this year, altho i owned BC-474’s going back to 1985.

None of the online SCR-288 manual copies seem to include this Change.

Back then, i solved the “audio oscillation” phenomenon by putting a “damper” resistor across the output transformer.

That does work, and my even be a better solution, in case you don’t have this tube shield, but here is the original

U.S. Army solution. I note the withdrawal of “RESTRICTED” status is May 1944. Was this the date of inception of the

SCR-694 ?

‘Change 1’ included here for your archives.

-Hue Miller