Dear all,
The maximum power level of the CMU200 is a topic that comes back in this forum every once in a while. Recently, I recorded a video that digs deeper into that topic (see below).
Installing options B95 or B96 brings down the maximum power level of RF1 from +47 dBm (~50W) to +33 dBm (~2W). The technical reason is that the board of these options actually take the physical space where otherwise the heat sinks and fan are for cooling the shunt resistor of the 50W version. With these options, you get some more functionality at the price of less input power. Fine, that is a choice you can make.
More intriguing is option CMU-U99/B99, titled "RF1 level range identical to RF2 option". As far as I can see, this 'option' is always a downgrade. You give up the 50W capability and get nothing in return. (Unless you have an automated setup where you need to switch between input channels that are both exactly –8 to +33 dBm ?!?). I find it strange to call this an 'option'..
Anyway, here is the video:
https://youtu.be/BtFvhvN3d8A