Which device is used to measure the current drawn by a small hand-held receiver?

The device that is specifically used to measure the current drawn by a small hand-held receiver is the RF ammeter. This type of ammeter is designed to handle radio frequency (RF) signals effectively, allowing it to accurately measure the current in circuits that operate at RF frequencies, which is common in amateur radio equipment.

An RF ammeter will typically have characteristics that are optimized for the high-frequency signals used in communication devices like hand-held transceivers. It can measure considerable variations in current accurately, ensuring that operators can monitor their equipment's performance and avoid potential damage due to excessive current draw.

Other devices mentioned have different primary functions. A voltmeter measures voltage, while a standard ammeter measures direct current (DC) in lower frequency circuits. A power meter measures the power output and efficiency of a device, which does not directly indicate the current. Thus, while they are useful in different contexts, they are not suitable for measuring the specific current drawn by RF receivers the way an RF ammeter is.