06 September 2021

Laptop WiFi antenna coax

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Laptop computers usually have the WiFi antenna in the upper border of the screen/cover. When you dismantle one down to the last bit, you end...
15 August 2021

Topward TFG-8104: the multimeter challenge

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SPOILER ALERT . This post contains my take to the question asked in the previous post: "how to determine if it works with just a multim...
10 August 2021

Topward TFG-8104: does it work?

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Does the Topward TFG-8104 Function Generator (from the previous post) work? Well, considering the source, the correct question is: " Wh...
05 August 2021

Topward multimeter and function generator - for repair

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I got two Topward instruments at a fundraising event: they give away truly untested and almost certainly broken electronic devices that migh...
30 July 2021

Winding QCX toroids as left-handed

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The other day I resumed building the QCX transceiver kit I bought a couple of years ago in 2018. I had left it to the point of winding toro...
05 July 2021

From Tortona 2021, Nixie and CRT

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The picture shows part of the spoils from Tortona June 2021 flea market. On top is the original box containing a DP7-32 CRT. The letter ...
01 July 2021

Testing the equipment by testing other things

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I found myself stuck in a testing loop while learning on-the-field how to use the Hantek oscilloscope: I was creating test cases for the osc...
29 June 2021

Hantek DSO2D15 first impressions

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Holding the box with one hand. The delivery of the Hantek DSO2D15 oscilloscope was really fast ("EU Direct Shipping" by AliExpres...