Rf Output Power; Rf Receiving Sensitivity; Operating Frequencies; Recommendation Of Rf Pad Welding - Quectel M12 Hardware Design

M12 Hardware Design

4.2. RF output power

Table 25: The module conducted RF output power
Frequency
EGSM900
DCS1800
Note: In GPRS 4 slots TX mode, the max output power is reduced by 2.5dB. This design
conforms to the GSM specification as described in section 13.16 of 3GPP TS 51.010-1.

4.3. RF receiving sensitivity

Table 26: The module conducted RF receiving sensitivity
Frequency
EGSM900
DCS1800

4.4. Operating frequencies

Table 27: The module operating frequencies
Frequency Receive
EGSM900 925~960MHz
DCS1800 1805~1880MHz

4.5. Recommendation of RF pad welding

If external antenna is connected with RF cable welded on the RF pads, please refer to Figure 45.
Any incorrect welding type may cause poor performance both in transmitting power and receiving
sensitivity.
M12_Hardware_Design_V3.3
Max
33dBm ± 2dB
30dBm ± 2dB
Receiving sensitivity
< -108.5dBm
< -108.5dBm
Transmit
880~915MHz
1710~1785MHz
Min
5dBm± 5dB
0dBm± 5dB
ARFCH
0~124, 975~1023
512~885
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