Environmental Research,
and Special Applications
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Quality Electronics for Wildlife, Environmental Research, and Special Applications |
The µCHP Transmitter is a single-frequency, pulsed-CW transmitter, designed for operation in the 140 - 220MHz frequency range.
| Frequency Range | 140 - 220MHz (w/ 3rd Overtone micro-miniature shock crystal) |
| Frequency Tolerance | ±7ppm max @ 25°C ±25ppm max -0 < Temp < +60°C (<15ppm typical w/ 6:1VSWR variation - CHP-5P through -9P) (Optional: <7ppm typical w/ 6:1VSWR variation - available only w/ CHP-4P) (<5ppm typical over supply voltage range) |
| Temperature Range | -20° to +60° (electronics only) 1 ~0° to +60°C |
| Power Control Component | Externally controllable by presence of a small magnet. |
| Current Requirement |
3.0mA typ peak ('on' state, during RF pulse 5µA typ quiescent current ('on state', between RF pulses) <2µA typ with magnet in place ('off' state) |
| RF Pulse Width |
15msec ±3msec typical at +25°C / 1.5V (18msec±4msec typical at 1.1V) (13msec±2msec typical at 1.8V) |
| Pulse Rate | Configurable from 20 to 300 beats per minute (Pulse Period 200 - 3000msec) |
| Spurious Output |
Coherent Spurs <-10dBc Non-coherent Spurs <-40dBc |
| Available Sensors |
Position (power switch - head up/head down) Temperature (Thermistor) approx 0.1°C resolution (Calibration required for accurate temperature measurement) |
| Dimensions (bare board) |
Crystal Piggyback: 0.25x0.30x 0.22in Crystal End-Mounted: 0.25x0.49x0.09in |
| Packaging | Application Dependent - typically polymeric |
| Weight | Configuration Dependent |
Cautionary Statements:
1. Temperature range is for transmitter only. The typical battery cannot provide the required
peak current and voltage requirements for the transmitter below ~ 0°C.