Thanks to many on AK, there is much info on what the proper replacements are. Thanks everyone for that!! Don't get me wrong, I try to replace broken parts with a replacement that is as close to original but still also available!
I think you can still buy service bulbs in incandescent? I use 60 watt bulbs. If you go to home Depot, you can get a double socket adapter. That way you can mix and match for desired wattage. I mostly keep 2 - 60 watts screwed in , but if I want just 60 watts , I unscrew one bulb till it's out...
I had an app signal generator at one time, but it would never produce enough input voltage for power testing gear. OP, I bought a fairly cheap digital signal generator from Amazon. It works quite well for the cost.