5314028070

Potomac Instruments AM-19 Antenna Monitor

WEIGHT:

11.5 Ibs (5.2 kg)

FIM-21    NPN    Field Intensity Meter

The versatile AM-19 provides accurate measurement of phase angle and loop current in directional AM antenna systems. Phase measurement accuracy is ±1.0 degree with a 0.5 degree resolution. Loop current indications are accurate to within ±1.5% with a resolution of 0.5%. Meters are individually calibrated. Tower selection is accomplished by pushbutton switches, offering the distinct advantage of switching from one tower to any other tower in the array without sequencing. The AM-19 is designed to accom-modate DA-1, DA-2, and DA-3 patterns. Arrays from 2 to 12 towers may be monitored. Outputs are available for automatic logging. For extended frequency rangę, the AM-19D isavailable.

SIZE:    7" (17.9 cm) H;

19" (48.4 cm) W;

12-3/4" (32.4 cm) D.

AM-19    NPN    Antenna Monitor

AM-19 AM Antenna Monitor

Potomac Instruments FIM-21 Field Intensity Meter

Lightweight and highly stable, the FIM-21 provides precise electromagnetic field measurements in the 535- to 1605-kHz rangę. Field intensities between 10 microvolts/m and 10 volts/m are directly indicated on the front panel meter. The printed Circuit loop antenna is an integral part of the cover and is coupled to the instrument automatically when the cover is opened. Built-in standard "D" cells will provide approximately 1,000 readings, dependent on use of meter łights and volume setting of the integral loudspeaker. Calibration accuracy is 1%, referenced to 220 millivolts per meter.

SIZE:    8-3/4" (22.2 cm) H;

11-1/2" (29.2 cm) W;

5-1/8" (13.0 cm) D (cover closed).

FIM-21 Field Intensity Meter

Potomac Instruments FIM-41 Field Intensity Meter

This unit is physically similar to the FIM-21 except that it operates in the frequencv rangę of 540 kHz to 5 MHz.

SIZE:    8-3/4" (22.2 cm) H;

11-1/2" (29.2 cm); ;

5-1/8" (13 cm) D (cover closed)

WEIGHT:    11.5 Ibs (5.2 kg)

FIM-41    NPN    Field Intensity Meter

4-13