Signal Source Specification A 50-Ω source is tuned to 100 MHz and attached to a 50-Ω spectrum ana- lyzer with 200 ft of 50-Ω coaxial cable that has a loss of 4.5 dB/100 ft at 100 MHz. The spectrum analyzer reads a level of signal at 100 MHz of 56.5 dBuV. If the cable is removed and the signal source is attached directly to a 100-Ω load, determine the voltage across this load in dB㎶ [67.98 dBμV]. Determine the reading on the meter of the source in dBm -41.5 dBm]
A 50 Ω source is attached to a 50-Ω receiver with 200 ft of RG58U coaxial cable (4.5 dB/100 ft loss at 100 MHz). The source is tuned to 100 MHz and the meter indicates that the output is -30 dBm. Determine the voltage at the receiver input in dBμV. [68 dB㎶ I. If the voltage at the output terminals of the source is measured and found to be 30 mV, determine the voltage at the input to the receiver in dBm. [-26.45 dBm]. If the received voltage at the terminals of the receiver is measured and found to be -50 dBm, determine the voltage at the output terminals of the source in dB , [66 dBμV]