Cisco Cable TV Optical Node and RF Amplifier Teardown

Teardown of Cisco / Scientific Atlanta Cable TV optical node and drop amplifier. These are modern versions running on fiber networks. These small amplifiers are used in houses where it is not practical to use a receiving antenna to get …

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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 …

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Cisco 9900 Series 50-1000MHz RF Signal Splitter Teardown

Cable TV Networks This Cisco headend/hub RF combining and splitting networks is used in Hybrid Fiber-Coaxial networks. HFC is a telecommunications industry term for a broadband network that combines optical fiber and coaxial cable. Advanced HFC networks include numerous 2-way …

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German Weather Balloon Teardown, Vaisala RS41-SGP Probe

During my vacation at the island of Langeland, Denmark, I found a washed up radioprobe from a German weather balloon on the beach. It is a Vaisala RS41-SGP single use instrument in a styrofoam enclosure that can measure air temperature, …

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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. Used in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 1: System station and Part 2: Power amplifier Phased Antenna …

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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 …

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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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