This would result in 0.9 dB less noise power. The receiver antenna gain can be higher than the 35 dB used. 40 dB seems reasonable. Calculating a link budget with these parameters tells us we need 800 mW of power. On top of the calculated link budget, we have a number of parameters that will further weaken the signal.
Rain is obviously another major cause of loss.
The oscillator generates a 65 MHz LO signal. The circuit sits in a separate box to avoid heat transfer from other components. Here we come in with the 10.7 Mhz from the IF matrix and the 65 MHz LO signal from the oscillator module. This circuit is on standard epoxy pcb. Most filtering is done with helicals.