FMR-05D Datasheet, PDF (2/3 Pages) List of Unclassifed Manufacturers – Radio data receiver

TECHNICAL DATA ON 27MHz FMR-05D
SUPPLY VOLTAGE :
4.5 to 5.5 V DC, absolute maximum 6.5VDC
CURRENT CONSUMPTION
3.5mA
RECEIVER TYPE :
Dual Conversion Superheterodyne
RECEIVING FREQUENCY :
27.145 MHz (Other frequencies available on 27.045, 27.195 and
27.455 MHz. The 27.455 frequency is not available for Australia).
TYPE OF CRYSTALS USED :
10.245 MHz, Fundamental, 20pf, 30ppm.
16.495 MHz, Fundamental, 20pf, 30ppm.
OPERATING TEMPERATURE RANGE : -5 to + 50°C
1^ST IF FREQUENCY :
10.7 MHz
2^nd IF FREQUENCY :
455 KHz
SELECTIVITY :
-6 dB at + - 5 KHz, -20 dB at +- 6KHz
IMAGE REJECTION :
At 26.285MHz better than –60dB
SENSITIVITY :
-107dBm or 1µV
TYPE OF DEMODULATION :
Narrow-band-width Frequency Modulation (FM).
OCCUPIED BAND WIDTH :
+ - 5.0 KHz
FREQUENCY RESPONSE :
20 to 1500 Hz with 50% duty cycle (Other duty cycles
will degrade sensitivity)
BAUD RATE :
40 to 3000 bps with 50% duty cycle
DATA OUTPUT LEVEL :
0 to 5 volts. See below circuit for output impedance.
SIGNAL STRENGTH OUTPUT :
4.42 Volts at –100dbm (Indicates a valid signal)
ANTENNA :
50 ohms, 27 MHz CB-Antenna or piece of approximately
1 metre of wire.
DIMENSIONS :
50 X 33 X 16 mm
WEIGHT :
22 grams
USEABLE TRANSMITTERS :
Elsema FMT-2705.
Data Output Circuit Diagram
+5V
+5V
12 pF
Antenna
10 Ω
MC13135
+
_
10 KΩ
220 KΩ
270 pF
Data
74HC132
NB: The Data output connection constantly outputs a noise signal between 0 to 5 volts. When sensing
the data pin, care should be taken so that the noise signal is not decoded as data. Use the Signal
Strength connection to detect a valid data.
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