AnsweredAssumed Answered

3 dB vs 6 dB bandwidth

Question asked by timbo on Jun 5, 2012
Latest reply on Nov 20, 2015 by jallnutt
This seems like a simple question but I can't seem to find or derive a calcuation. 
How do you convert 3 dB bandwidths to 6 dB bandwidths? (I doubt that multiplying by two is the correct answer!) 
I have a requirement to use 10 kHz or greater 6 dB resolution bandwidth. I'm using a 4440a spectrum analyzer that is calibrated to 3 dB bandwidths. What bandwidth should I use and how did you calculate it. (I need the formula, not just a number.)