Predicta Tandem 17DAP4 CRT for testing ?

[vt105]

I have a Tandem chassis I am restoring but has a bad CRT.

Could I use a 17DAP4 for test purposes considering the heater voltage differences ? The 21EAP4 uses 2.34@ 0.60 17DAP4 2.68@ 0.45 what about HV?

I have a spare tandem yoke and video board (used on rear of CRT) that I would be using with the 17DAP4 and making a shorter cable to connect the test CRT to the chassis. Would this cause any problems being shorter vs the cumbersome 25 footer ?

As always thanks for any advice