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> Ifr fm/am-500A communications service monitor opt 1&4
Ifr fm/am-500A communications service monitor opt 1&4
IFR FM/AM-500A Communications Service Monitor with Options 01 and 04
This unit in good working order come with battery and AC cord
The Unit's Serial Number Tag Reads:
Power Requirements: 115/230 V, 50-400 Hz
* Sensitive 2 µV receiver for AM, FM, and SSB
* 10 Hz to 9999.9 Hz variable audio generator plus audio frequency error meter
* Frequency error meter with 1 Hz resolution
* Peak and average reading watt meter, automatically protected generator output to 150 watts (no bothersome fuses to replace)
* Deviation measurement capabilities to 60 kHz
* Internal rechargeable battery (approximately 2 hour battery operation)
RF Signal Generator Specifications:
Frequency Range: 250 kHz to 999.9999 MHz in 100 Hz increments
Frequency Accuracy: Same as Master Oscillator
Variable Generate: Continuous tuning +/-10 kHz from selected frequency
Residual FM: <100 Hz peak RMS
RF Output Power: -127 dBm to -20 dBm (10 dB steps with 11 dB range continuous vernier)
RF Output Accuracy: +/-3 dB
Output Impedance: 50 Ohms nominal
Output Protection: Fully protected, 25 watts continuous, 150 watts for 1 minute. Auto changeover from generate to monitor will occur at a nominal 100 MW level.
Internal Modulation: See Audio Generator
FM: 2 Hz to 30 kHz (DC when in variable generate)
AM: 10 Hz to 10 kHz (30% maximum modulation above 5 kHz)
FM: <1% to 20 kHz deviation
AM: <10% to 60% modulation
Input Impedance: Greater than 10K OHMS
Audio Generator Specifications:
Internal: Modulation/Tone Out level controlled by 1 kHz or Variable control
Speaker: Tone applied directly to speaker with volume controlled by 1 kHz or Variable control
External plus Internal: External modulation input is summed directly with tones and applied to modulator
Fixed: Same as Master Oscillator
Tone Distortion: (at 2.5 VRMS Output)
Variable: <0.5% at 1 kHz, <1.5% 10 Hz to 9999.9 Hz
Tone Output Level: 0 to 2.5 VRMS minimum either tone into 150 Ohm load
Frequency Range (Variable): 10 Hz to 9999.9 Hz in 0.1 Hz increments
Power Meter Specifications:
Range: 0 to 15 and 0 to 150 watts peak or average responding
Accuracy: 1 to 600 MHz +/-7% reading, +/-3% full scale 600 to 1000 MHz +/-20% reading, +/-3% full scale
Input Power: 25 watts continuous, 150 watts 1 minute on, 5 minutes off
Receiver/Monitor Specifications:
Frequency Range: 100 kHz to 999.9999 MHz in 100 Hz increments
Sensitivity: 2 µV (1 MHz to 1000 MHz, FM Narrow) (Sensitivity decreases below 10 MHz)
Adjacent Channel Rejection:
Output Impedance: 600 Ohms
Output Level (Measured into an open circuit):
Receiver Antenna Input Protection: 0.25 watts maximum without damage
Frequency Error Meter Specifications:
RF Accuracy: +/- Master Oscillator +/-3% of full scale
RF Ranges: +/-10 kHz, +/-3 kHz, +/-1 kHz, +/-300 Hz, +/-100 Hz, +/-30 Hz full scale
Audio Counter Accuracy: +/-0.01% +/-6% of full scale
Audio Counter Ranges: +/-300 Hz, +/-30 Hz, +/-3 Hz full scale
Modulation Meter (Monitor Mode) Specifications:
Type: Maximum of positive or negative peak (AM and FM)
FM Deviation Accuracy: +/- 5% of reading +/-3% of full scale
FM Deviation Ranges: 2 kHz, 6 kHz, 20 kHz, 60 kHz full scale
AM % Modulation Accuracy: +/-5% of reading +/-3% of full scale
AM % Modulation Ranges: 60%, 200% full scale
SINAD/Distortion Meter Specifications:
SINAD: 3 to 20 dB at 1 kHz
Accuracy: +/- 1dB at 12 dB SINAD
Input Level: 0.25 VRMS to 2 VRMS (10 VRMS maximum SINAD)
Impedance: 10 K Ohms nominal
Distortion Range: 0 to 20% at 1 kHz
Master Oscillation Specifications:
Accuracy: 0.2 PPM (0-50°C)
Aging: 3 PPM per year, 1 PPM thereafter
Operating Temperature Range: 0 to 50°C
Line: 105-130/210-260 VAC, 50-400 Hz at 30 watts typical
Ext. DC: 12-14 VDC Nominal at 2 AMPS
Operation on Internal Battery: Approximately 2 hours