As long as tubes light use them in the radio. Watch that the 380 doesn't glow blue or flash inside. Tubes are not the biggest problem. Capacitors become leaky or short over the years.
Your radio is actually the best tube tester. A tube may show weak and still work perfectly in a radio.
Norm
: Help....I need to test approximately 6 T-27 tubes, two 45's and 1 Cunningham 380. Do I have any other outlet other than purchasing a tube tester on line that I know very little about. Will purchase any of the tubes testing bad if possible. Thanks for the suggestions Bill