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...
25 June 2021

Gone is the Tektronix oscilloscope, welcome Hantek

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For a number of reasons I needed to relocate the Tektronix 7000 series oscilloscope: large, heavy, noisy, at times unreliable, stuck in an u...