Receiver figure of merit So I am solving receiver figure of merit. I have gain in dB and noise temperature in K.

I know 

[G/T] = [G] - [T] dB/K

Here should I need to take T in dB or just as K?
The relationship [G/T] = [G]-[T] dB/K is incorrect.

G/T when in units are already given in dB/K is simply the gain in dB divided by the temperature in K.