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FMT-2712
1 Watt 27MHz Radio Data Module
Features
• Enables sending of digital data up to 3000m
• Digital Data supported: pulse width modulation signals, singals from standard encoder-decoder circuits of the given bandwidth
• Direct FM modulation
Application
• telecommand
• radio data communications
• commercial / industrial telemetry. |
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Description
The high power data module allows you to send your digital data up to 3000 metres, when used with the Elsema FMR-05D receiver. Digital data such as pulse width modulation signals and signals from standard encoder-decoder circuits of the given bandwidth, can be transmitted by direct FM modulation.
Applications include telecommand, radio data communications and commercial/industrial telemetry.
Compatibility
All Elsema type FMR-… series:
FMR-05
FMR-05D
Technical Data
Supply Voltage |
11-13.6V. Absolute Maximum 14VDC |
Supply Current |
300mA when enabled pin to +5V
less than 1uA disabled and "M" terminal to 5V |
Enable Voltage / Current |
5-13.5VDC, max current 50uA |
Operating Frequency |
27.145MHz (Other freq. available: 27.045, 27.195 & 27.455MHz. NB. 27.455 freq. is not available for Australia ) |
Oscillation System |
Crystal Controlled, 30ppm at 0-50 deg C |
Operating Temperature Range |
0-50 deg C |
Data Input Level |
Data should swing close to ground and +5V |
Frequency Response |
100Hz to 2400Hz |
Baud rate |
300-2400bps. For a baud rate of 4800bps a 2.2kOhms resister should be used in series with terminal "M". Manchester code is recommended |
Recommended Receiver |
FMR-05D (Outputs your digital data) |
RF Power Output |
1W into 50 ohms at 13.6VDC |
Antenna |
ANT27L with 50 ohms, shielded cable |
Type of Emission |
Narrow-band-width Frequency Modulation (5K00F1D) |
Frequency Deviation |
1500Hz non-return to zero |
Harmonics |
Less than -13dBm (50uW) |
Weight |
8 grams |
Useable Operating Range |
Up to 3000m line of sight |
Block Diagram
| + |
12V DC Positive Supply |
| E |
Enable pin. When +5V applied to this pin the transmitter is enabled. 0V disables transmitter |
| M |
Data input (FM-modulation input). Data should swing close to ground & +5V. A data rate of 2400 baud can be transmitted. For a baud rate of 4800 a 2.2k Ohms resistor should be used in series with terminal M. |
| - |
Negative to supply, ground & RF-ground |
Dimension
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