Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2007
> October
> Ifr fm/am-500A communications service monitor
Ifr fm/am-500A communications service monitor
IFR FM/AM-500A Communications Service Monitor with Options 01 and 04
Comes with a manual and what you see in the pictures. If you don't see it, you probably wont get it.
Specifications are from IFR and may vary slightly due to upgrades, options, or revisions this unit may or may not have.
The unit is guaranteed to work for 30 days, parts and labor. The unit was calibrated by KG Electronics on 9-17-07 and is under calibration until 10-08.
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)
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)
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
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)
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:
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:
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
Dimensions: 29.2 cm (11.5") wide, 12.4 cm (4.9") high, 36.3 cm (14.3") deep, 45.7 cm (18") deep with lid and handle - does not include packaging
Weight (Approximate): 22 lbs. (9.9 kg) with battery - does not include packaging
For More Pictures Please Click the Following:
* Picture 2 - Front Controls, Up-Close
* Picture 3 - Back of the Unit
* Picture 4 - Connections on Back, Up-Close
* Picture 5 - Calibration Tag
* Picture 6 - Serial Number Tag
