What is a potential drawback of using a handheld VHF transceiver inside a vehicle that lacks an externally mounted antenna?
Signal strength is reduced due to the shielding effect of the vehicle✓Bonne réponse
The bandwidth of the antenna will decrease, increasing SWR
The SWR might decrease, decreasing the signal strength
The handheld will overheat due to reflected power in the vehicle
Explication
A vehicle body is largely metal and acts as a shield around the operator, so much of the signal to and from a handheld inside it is attenuated. Mounting an antenna outside the vehicle, where it can radiate freely and use the body as a ground plane, avoids the loss.