[Boatanchors] 75TH vs 75TL?

[W2HX]

Hi Friends,

I have a transmitter that uses two 75th's for modulators.  In my quest to always keep an eye out for spares I found a pair and bought them. When they arrived, I realized they were 75 TL's not THs. A quick look at their datasheets shows some differences and some similarities. I am not knowledgeable enough on tube technology to know whether the similarities would allow me to use these as replacement modulators, or whether their differences are too great.

Maybe the answer is "depends ?"

Any thoughts appreciated
73 Eugene W2HX