You can use the KT88 setting but the real problem is 6550 tubes don't show short with the Hickok 752 even when they are bad.
This may not always be the case but it's happened often enough with my 6550 tubes and my Hickok I only depend on it for transconductance testing (tube life).
Not dependable when searching for defects from shorts.
This may not always be the case but it's happened often enough with my 6550 tubes and my Hickok I only depend on it for transconductance testing (tube life).
Not dependable when searching for defects from shorts.