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

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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 […]

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Huawei RRU3908 Base Station Teardown (Part 1 of 2)

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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

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Ericsson RBS 2216 Auxiliary Power Units teardown

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I have updated a old teardown post with a new video about the auxiliary power units. Read the old post and see all the details, pictures and amplifier teardown here: http://kaizerpowerelectronics.dk/teardown/ericsson-rbs-2216-900-mhz-base-station-teardown/

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Moving To A New Lab (Part 3&4) Workshop Tours

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Here you get a short glimpse of the new space for the workshop. This is part 3 and 4 in a series of videos on moving out, moving in and setting up the new lab / workshop. Part 5 & 6 is available here. I am moving out of the apartment and into our own

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Teardown of a Merlin Gerin Pulsar ESV 22+ UPS

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Here is a new teardown of a small Merlin Gerin Pulsar ESV 22+. It is a 2.2 kW UPS that provided backup power for a small radio system used by a taxi company. For more UPS teardown videos and articles, check out the complete list of teardowns.

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Moving to a new lab (Part 2) New basement lab and workshop tour

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The previous episode: Moving to a new lab (Part 1) Old basement lab tour and future projects. Here you get a short glimpse of the new lab space and work shop. This is part 2 in a series of videos on moving out, moving in and setting up the new lab / work shop. I

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Moving to a new lab (Part 1) Old basement lab tour and future projects

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Follow me as I move from my old small 10 sq.m. lab to a new 20 sq.m lab and with additional 20 sq.m work shop. This is part 1 in a series of videos on moving out, moving in and setting up the new lab / work shop. I am moving out of the apartment

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Taxi Radio Basestation teardown – UHF/VHF Storno radio

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This is a teardown of a complete Taxi computer and UHF/VHF Storno radio base station system. The Taxi car computer and connection box is used for location tracking, taxation, passenger detection and correct price calculation. All done in order to make sure that correct taxes are paid to the government but also to ensure that

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