RTL-SDR Receiver Gains

I am working through a book (see first attachment) and have come across a SIMULINK model of a receiver - second attachment. In this model you will see an RF gain of 50 dB and another gain MHz of 1e6.

Is this related to gain bandwidth product i.e. gain of 50 dB upto 1 MHz ?

Answer 1

[Patel Mounika]

The gain 50 dB is Receiver gain and 100MHz is the center frequency. The center frequency of a channel is measure of center frequency between upper and lower cutoff frequencies.It is usually defined as either the arithmetic mean or the geometric mean of the lower cutoff frequency and the upper cutoff frequency.