26 September 2022

Almost working circuit with 6LO1 CRT

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A square little 6LO1 CRT and associated circuit.   The are a few reasons why I bought this homemade circuit originally meant to display the ...
17 September 2022

A simple way to 77 GHz

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The Italian government has approved a new frequency allocation document, so I checked which changes would impact the amateur radio world. I ...
11 September 2022

Italian RAI has stopped medium wave service.

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As of today, Sunday September 11th, 2022, the Italian national broadcast RAI has stopped all its medium wave transmissions. 567, 657 and 999...
28 August 2022

Summer 2022 PCB Collection

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In order to reduce the impact of returning home from holidays, this year I prepared a small present that would make me want to get back: not...
26 August 2022

A request to my German (speaking) readers

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At Friedrichshafen fair last June 2022 I bought some stuff from the seller at table A012 ( https://youtu.be/BH29tY4Sjyc? t=154 and next 30...
05 August 2022

Using KiCAD on dual screen on Ubuntu

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When I tried ordering a PCB from a manufacturer in 2017 my choice for generating the Gerber files was KiCAD, version 4 back then. All home c...
21 July 2022

SGS integrated circuits H100/H200 series

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Shortly after posting about H 257 and H 258 never-seen-before(-by-me) ICs, I tried different search keywords and a datasheet popped up from ...
14 July 2022

Integrated circuits SGS "H 258 B1" and "H 257 B1"

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One of the Nixie boards I bought in FN Ham Messe 2022 does not use the usual 7441 Nixie driver + 74xX Latch combo, but rather some undocumen...