The AN/TPN-25 Precision Approach Radar (PAR) transmitter multiplies the different incoming waveforms by a factor of:

The AN/TPN-25 Precision Approach Radar (PAR) operates by using a transmitter that is designed to enhance the radar signals for improved accuracy in landing operations. The transmitter achieves this enhancement by multiplying the different incoming waveforms by a factor of 48. This multiplication factor is integral to increasing the signal strength and refining the radar's ability to process and interpret the signals it receives from aircraft.

Using a multiplication factor of 48 allows the PAR to achieve a high level of precision in its measurements, which is crucial for providing accurate approach guidance to pilots. This precision is essential for safety in aviation, particularly during landing when visibility may be limited or other challenging conditions are present.

The other choices reflect factors that do not correspond to the specifications of the AN/TPN-25 PAR system. These lower factors would not provide the necessary enhancement needed for the precision approach required in its operational context.