3G

Nokia Siemens 3G Flexi 2.1GHz to 2.4GHz 50W Amplifier Reverse Engineering (Part 3 of 3)

Circuit analysis, reverse-engineering and hacking of a Nokia Siemens Networks Flexi Multiradio base station FRGL amplifier. The user Da_Stier from highvoltageforum.net made a deep circuit analysis of the power amplifier, reverse-engineered how it works, built new printed circuit boards to make it run standalone and built a new enclosure for it. Shifting its output frequency […]

Nokia Siemens 3G Flexi 2.1GHz to 2.4GHz 50W Amplifier Reverse Engineering (Part 3 of 3) Read More »

Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Circuit Analysis (Part 2 of 3)

Introduction I have here a circuit analysis of a 2100 MHz cellular amplifier from a UMTS basestation setup. The initial teardown video can be found in Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Teardown (Part 1 of 3). Video Cellular Basestation Overview The Nokia Siemens Networks FRGL module consists of two 50 Watt amplifier modules.

Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Circuit Analysis (Part 2 of 3) Read More »

nokia siemens frgl rf amplifier 2100 mhz 50 watt

Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Teardown (part 1 of 3)

Teardown of a Nokia Siemens Networks Flexi Multiradio amplifier. This was for example used for mobile phone base station installations and this particular part is a 2×50 Watt FRGL amplifier. This have been in service as a 2 antenna system for mobile telecommunications. It is GSM / EDGE and WCDMA / HSPA capable. Nokia Siemens

Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Teardown (part 1 of 3) Read More »

Nokia Siemens Flexi 3x70W FXEA 1800MHz Base Station Teardown: Power Amplifier

Nokia Siemens Flexi 3x70W FXEA 1800MHz Base Station Circuit Analysis (Part 2 of 3)

Circuit analysis of a Nokia Siemens Networks Flexi Multiradio base station. This have been in service as a 3 antenna system for mobile telecommunications. GSM/EDGE, WCDMA/HSPA and LTE capable. 3×70 Watt output power. Part 1 of the actual base station amplifier teardown can be seen here. Power supply The power supply is split into a

Nokia Siemens Flexi 3x70W FXEA 1800MHz Base Station Circuit Analysis (Part 2 of 3) Read More »

Huawei RRU3928 1800MHz Radio Base Station Circuit Analysis (part 2 of 2)

The RRU3928 is an outdoor remote radio unit. It processes baseband and RF signal data. With the Software Defined Radio (SDR)technology, the RRU3928 supports the dual-mode operation of any two modes of GSM, UMTS, and LTE through software configuration modification. RRU3928 has a dual-transmitter and dual-receiver structure, which supports higher output power and carrier capacity.

Huawei RRU3928 1800MHz Radio Base Station Circuit Analysis (part 2 of 2) Read More »

Huawei RRU3908 base station circuit analysis (part 2 of 2)

The Huawei RRU3908 is an outdoor Radio Base Station with one to four carriers and one to six sectors at 20/40 Watt RF output power per carrier. Other teardowns of radio equipment can be found here. Discussion of the teardown and analysis can be found here: https://highvoltageforum.net/index.php?topic=423.0 Central Processing Units Network communication is handled by

Huawei RRU3908 base station circuit analysis (part 2 of 2) Read More »

Huawei RRU3908 Base Station Teardown (Part 1 of 2)

The Huawei RRU3908 is an outdoor Radio Base Station with one to four carriers and one to six sectors at 20/40 Watt RF output power per carrier. Part 1 is the teardown itself with a walkthrough of different design highlights. Part 2 is coming online in the following 1-2 weeks. Part 2 is a complete

Huawei RRU3908 Base Station Teardown (Part 1 of 2) Read More »

base station power amplifier RF

Ericsson Radio Base Station RBS3206 teardown

The RBS3206 macro is an indoor Radio Base Station with one to four carriers and one to  six sectors at 20/40 Watt RF output power per carrier. All the boards that I have comes from the middle row in the above picture and unfortunately I did not have any of the diplexers at the top

Ericsson Radio Base Station RBS3206 teardown Read More »

Scroll to Top