E9H07 (D)
Why is it advisable to use an RF attenuator on a receiver being used for direction finding?
A. It narrows the bandwidth of the received signal to improve signal to noise ratio
B. It compensates for the effects of an isotropic antenna, thereby improving directivity
C. It reduces loss of received signals caused by antenna pattern nulls, thereby increasing sensitivity
D. It prevents receiver overload which could make it difficult to determine peaks or nulls
