Note
Ham Radio, Dec 1976, p. 92.
The Bird Series 3162 RF power monitor/alarm designed to warn of RF power drop-off below a set level to conform with FCC part 21.107 requirements. This fast-acting (50 millisecond) unit can be used, for example, at a mobile terminal site to measure forward power, reflected power (with a momentary-contact front-panel switch), and to obtain VSWR and optimum system data during routine maintenance. It is then left in the line to feed back a signal in response to the transmitter being keyed, indicating whether it is on the air and with sufficient power.
The series 3162 is available for operation at all telephone company communications frequencies and power levels; for example, 2-512 MHz and 1-500 watts. It is available in either a 12-volt DC model or a 117-volt AC model. A typical 12-volt model is priced at $595.00.