They also tend to lack external antennas for the same reason.

Do not use telephone in a car without an external antenna.

This can be resolved by using an external antenna.

I'd rather have the external antenna if it gives me better reception.

For the same reason, they also tend to lack external antennas.

The external antennas slowed down aircraft that were already considered of low performance for their role.

With an external antenna, ranges of 10 miles or more can be expected.

Live satellite feeds often break up when an external antenna is not used.

Mantle and foot are very well developed, usually with external antennae.

For this reason in these cases an external antenna is usually desirable.