MODEL AF272:  PORTABLE FM/SCA RECVR & FIELD STRENGTH METER

 

The receiver is a sensitive FM receiver that covers the 88 to 108 MHz standard band and demodulates the main channel audio as well as the standard 67 and 92 KHz subcarrier audio.

Model AF272 picture

Meters are provided that enable the Model AF272 to be used as a portable Field Strength Meter.  There are two tuning methods:  FIXED tune frequency (PLL controlled) and a MANUAL tune control for the entire band.  There are switch selectors for the tuning method used, the audio selection, meter function and attenuator controls.

 

MAIN CHANNEL:
Frequency of operation:............. 88 to 108MHz
Input Impedance ....................... 72 ohm nominal
Sensitivity (mono) ..................... 1.5uV (12dB SINAD) limiting @
                                                     3uV
Attenuation ...............................  30dB set; 30dB meter reading
Total Harmonic Distortion: .... .. Less than 1% at 100% mod 400Hz

 

SUBCARRIER:
Frequency ................................. 67 or 92 KHz (switch selectable)
Sensitivity ................................. 5uV (12dB SINAD) with 10% injection
Total Harmonic Distortion ....... Less than 2% with +/-6 KHz dev., 400Hz
 

 

POWER:
External .................................... 12Vdc nominal, 250mA
Internal (Battery) ..................... Eight "C" size Alkaline (approx. 24 hrs operation)
                                                     or NiCad batteries
    Batteries not included              (internal battery charger supplied)

 

CONTROLS/INDICATORS:
Meters ...................................... Signal Strength
                                                     Tuning/Injection
Switches .................................... On/Off on AUDIO
                                                     ATTN (RF Attenuator)
                                                     MAN/FIXED Tuning
                                                     TUNE/INJ on meter
                                                     MAIN/67/92/"B"
Controls .................................... AUDIO (Volume)
                                                     TUNE (Freq. Tuning)

 

CONNECTORS:
Antenna ..................................... Type "F" connector
Input Power ............................... 2.1mm round
Headset ..................................... 3.5mm audio jack

 

CONVERTER:
115 VAC, 60 Hz to 12Vdc, 300mA wall converter (supplied)

 

DIMENSIONS:
3-3/8" H x 6-1/4" W x 8-3/4" D  (inches)

 

WEIGHT:
3.0 lbs w/o batteries; 5.0 lbs with batteries

 

CASE:
Padded nylon carry case (supplied)

 

Warranty Information

 

 


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Last Updated Friday, March 07, 2003