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I am no longer on and I will try my best to keep away from some of the people on that server who have taken upon themselves the mantle of upholding the principles of Free Software! I am also observing that mastodon is not so different from twitter when it comes to sane discourse. That is expected - people can't be different when they type on a different browser tab.

I will be mostly tooting my (mis)adventures with amateur radio here and not much about anything else.

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Thank you @M0YNG.

Hello everyone - I am Ramakrishnan. My callsign is VU3RDD and I live in Bangalore, India. I am interested in homebrew electronics and I mostly operate HF/CW at the moment. I have inverted V antenna for 40 and 20m bands.

I do computer programming for a living and work on low level software, cryptography and network protocols..

I have another account but i thought of separating the radio/electronics toots into a separate account.

Are you a software maintainer? Please upload your releases with source code to and make this a part of your release process. This will ensure that anyone wanting to use your software in the future will be able to find it. Please boost.

Feel pretty pleased with myself, I just built my first home-designed PCB and it worked :alex_grin:

It's the small bidirectional amplifier described here: and built by w2aew here

I made a couple of footprint mistakes but didn't need any bodge wires! I spent ages messing with KiCad but learned a lot, and have a few ideas for changes. I don't really have a project in mind, but wanted to build something simple I could use to learn.

@bright_helpings Audiobooks might be a great format for illiterate people to read books. 🤔

I've never seen anybody from the west discuss illiteracy as an accessibility problem.

A lot of people from my grandparents' generation born right after independence, especially women, never learnt to read and write because the new government didn't construct the schools yet. Still they were well informed of the news through radio broadcasts.

#accessibility #illiteracy #audiobooks

Am I the only one who thinks WASM is bad for free software world? We currently have JS "minifiers" which deliberately make code unreadable. WASM is binary blob! If you did a zoom call via a browser, you already downloaded a bunch of blobs already. Browser based software already lies to the users when they say "you don't have to download and install any software". WASM takes it to another level, you no longer can do a "view source" anymore.

"Decentralized" systems are susceptible to catastrophic failure if every node runs the same software created by a single entity. Open Source doesn't change this. *Social* decentralization and diverse implementations for a protocol provide better resilience and distributed agency.

Some interesting radio stuff for sale here..

The QRM eliminator and the active antenna both look very interesting.

tired: computers are problem solving tools.
wired: computers are problem generating tools.
inspired: computers are problem probleming problems


I would also like to to a Pulse Density Modulated 1-bit DAC with FPGA. The idea is to implement a CW keyer with this $20 FPGA board, mostly for learning and also generate sidetone with raise cosine envelope. 1-bit DAC seem perfect for that.

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Played a bit with FPGAs this weekend. It was a lot of fun. Ordered an ADC that can be talked to via SPI bus. SPI bitbang with FPGA is my next project. So much can be done with a $20 Icestick and free software tools!


Learning new skills or developing existing ones by starting projects that don’t end in completion is a perfectly good and positive use of one’s time.

Have any other software devs found that they have to psyche themselves up prior to starting a long coding session (like someone has to talk themselves into it before jumping off a high diving board)? There seems to be a cognitive load associated with getting into the flow state (especially when there's risk of interruption, e.g. during lockdown when the whole family's around all day :) )... Can anyone relate?

building the future is not a purely technical project, I don't even think it's a primarily technical project. it's a project of community and people, which is to say is inherently political. I think that word is a turn off to many programmers in the West who (due to Cold War era education I guess?) are effectively politically illiterate. and when you insist on being "apolitical" then all you can do is bolster the status quo. this is not how you make progress.

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so many people convinced they are "building the future" are actually just rehashing the present and the past. like every new supposedly planet-scale system that is ASCII only on some level, or the cryptocurrency community who's wildest dreams for a future society still involve money, hierarchy, wealth disparity, centralized control. this isn't progress.

The real spirit of amateur radio. (From Sept '21 edition of SolidCopy newsletter)

Today my mind seems to be on how capitalists like Google, Microsoft, & Facebook have subverted free software into free labor for them.

This ties into my advice from this morning to:
1) Pay for the free software you use, &
2) Tackle projects which aren't interesting to them.

@g0fcu I got my copy of Moxon's book today (2nd ed), but the cover looks very different than yours. It has a blueish cover page with HF written on it with RSGB logo at the lower left side.

You better believe FSF staff was at Fight for the Future's protest at the Apple store in Boston! All users deserve to have full control, full freedom, and full privacy on their devices.

Back to the drawing board. This time, I am going to plan a telescopic base for the antenna and fix it on the terrace that can be operated with a winch.

Also, if you are designing a Moxon, please DO NOT use this calculator:

It has a bug in the code, the author has been notified but it has not been fixed. I have a Google spreadsheet that calculates Moxon lengths. I will be happy to share it.

Also factor in velocity factor for the wire. Vf=0.955 is what worked for mine.

Here is what the PSK reporter shows.. Have never been heard by so many stations.. Mr. Moxon - I bow in front of you in reverence.

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