Function Description Item ref
WCDMA B2/LTE B2 PA WCDMA II, LTE B2 (RM-824 US)
WCDMA II (RM-824 AT&T)
N7500
WCDMA B4/LTE B4 PA WCDMA IV, LTE B4 (RM-824 US)
LTE B4 (RM-824 AT&T)
N7530
WCDMA B8 PA N7520
LTE B17 PA N7510
SP10T antenna switch
module
N7505
Cellular RF technical description
The RM-824 transceiver unit supports GSM 850/900/1800/1900, EGPRS (EDGE), WCDMA Band I (2100), II (1900),
IV (1700/2100), V (850) and VIII (900), LTE B2/B4/B5/B17, and HSPA. The transceiver is compatible with 3GPP
Release 6 specification, and supports Bluetooth 2.1+EDR standard and WLAN a/b/g/n (2.4 GHz and 5.0 GHz).
The transceiver consists of a system/RF module which is referred to as the engine, a Bluetooth/WLAN/FM
module, and a GPS module for use while the engine is operating in either GSM or WCDMA mode.
The transceiver consists in one PWB. Located on the top side of the PWB it consists of RF, BT, WLAN and GPS
engines.
The RF module receives and demodulates the radio frequency signals from the base station and transmits
the modulated RF signals to the base station. It consists of the following functional sub-modules: Receiver,
Frequency Synthesizer and Transmitter.
Figure 60 RF block diagram
RM-824; RM-825; RM-826
Service information differences between RM-824 and
RM-825
Page 7 – 16 NOKIA INTERNAL USE ONLY Issue 2
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