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.
current / 3.3V
|No||50 x 30 x 9 mm
|RP-SMA||55 mA (TX)
65 mA (RX)
|STD-503||19.2 kbps||Yes||40 x 29 x 5.5 mm
|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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