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 particular amplifier is set up for 862 MHz, 42 channels and has a return path
Astro HVO-Vario G 38, teardown of a 862 MHz cable TV amplifier Read More »
Two days ago I conducted the first successful resistive load test of a 3 phase power meter. It can measure voltage, current, power consumption, harmonic distortion and power factor. Read all about the construction and see all the pictures and video demonstration here.
Finished Project: Merlin Gerin PM700 Power Meter Read More »
Yesterday I conducted the first successful resistive load test of a 3 phase 13 A Lübcke variac stack. It has been been enhanced with safety and monitoring options. Read all about the construction and see all the pictures and video demonstration here.
Finished Project: 3 Phase 13A Lübcke Variac Read More »
Seven users entered the lottery for a board by leaving a comment with a email address. Through a gentleman agreement, they also subscribed to the various channels related to this site. Two random numbers have been drawn between 1 and 7 using random.org The two lucky winners are schiro marc and David! Thank you very much to all
Winners of a DRSSTC UD2.1 Board Read More »
I got two spare DRSSTC driver boards and you now have the chance to one of them home. It is a Steve Ward UD2.1 board as you see in the picture, with free shipping. All you have to do is one or all of the following things: Like my facebook page this is where you get
Win a DRSSTC UD2.1 board for just a like/subscribe Read More »
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 Array This is an obsolete Kathrein XPol 2-port single band panel antenna. The 2 ports means that
Nokia Siemens Networks Flexi WCDMA Teardown: Antenna (part 3 of 3) Read More »
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 12 minute video shows the teardown step by step with explanations, high resolution pictures of
Nokia Siemens Networks Flexi WCDMA Teardown: Power Amplifier (Part 2 of 3) Read More »
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 we see the first DSP board that was visible when the first shield was taken
Nokia Siemens Networks Flexi WCDMA Teardown: System Station (Part 1 of 3) Read More »