Category Archives: Teardown

Astro HVO-Vario G 38, teardown of a 862 MHz cable TV amplifier

These are highly modular cable TV amplifiers, they are set up by using a wide range of different insert cards with different frequency ranges or options. These are 38 dB amplifiers in the range from 47 to 862 MHz. This … Continue reading

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Nokia Siemens Networks Flexi WCDMA teardown: Antenna (part 3 of 3)

Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station for use in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 1: System station and Part 2: Power amplifier This … Continue reading

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Nokia Siemens Networks Flexi WCDMA teardown: Power amplifier (part 2 of 3)

Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station for use in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 1: System station and Part 3: Antenna The following … Continue reading

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Nokia Siemens Networks Flexi WCDMA teardown: System station (part 1 of 3)

Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station for use in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 2: Power amplifier and Part 3: Antenna In the above picture … Continue reading

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Ericsson RBS 2216 900 MHz base station teardown

The Ericsson RBS 2216 is a 900 MHz GSM base station that would have been installed at the base of a antenna somewhere out in the field of mobile telecommunication networks. The enclosure contains one BFU-31 battery fuse and relay … Continue reading

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GSM 900 MHz power amplifier teardown

I had the opportunity to take apart a GSM 900 MHZ power amplifier and band pass filter. Here I will show you how it is built and explain a little about the various mechanisms inside the filter.

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Teardown – Eaton Powerware 30 kVA UPS

I had the chance to take this Eaton Powerware 30 kVA / 27 kW (9355-30-N-7-2x9Ah) uninterrupted power supply apart to look for parts worth salvaging for future reuse in other projects. Looking up the type on the Eaton website we … Continue reading

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Teardown – Schneider Electric frequency inverter ALTIVAR71

I picked up two of there 5.5kW frequency inverters from a scrap yard. Both assumed to be thrown out due to malfunction. I took them home to dismantle them for parts to use in other projects. First we have the … Continue reading

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