What is the difference between the STD-502-R and STD-503?
The main differences are communication data rate, channel step option, size/weight, antenna connector type and current consumption.
| Data
Rate | Channel
Step | Size
Weight | Antenna
connection | Consumption
current / 3.3V |
|---|
| STD-502-R | 9.6 kbps*
19.2 kbps | No | 50 x 30 x 9 mm
24g | RP-SMA | 55 mA (TX)
65 mA (RX) |
| STD-503 | 19.2 kbps | Yes | 40 x 29 x 5.5 mm
10g | MHF | 48 mA (TX)
55 mA (RX) |
* Not available in US and Canada.
The STD-503 includes on-board temperature sensor and the STD-502-R does not.
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