Viewing profile — curiousfab

Ctrl+i (Firefox) Not generally useful to show this by default, because nowadays most pages are dynamically generated and although it's technically easy to implement, the last modif…

A VPS @ Hetzner, exim4. No problems with deliverability.

The variation in local noise between different locations is huge. As an apartment dweller and radio amateur, this is something I am fighting every day and in a densely populated en…

Setting a dangerous precedent, especially doing this by default (no opt-in) needed. But then again, if the people who carelessly include 3rd party dependencies (i.e. playing with f…

Typical FMCW radars transmit very short ramps (microseconds) at a very long (relatively) intervals (several ten milliseconds), i.e. a duty cycle of less than 0.1%. In order to crea…

I am running a few websites which have a simple feedback forms which POST to a simple PHP script that sends me an email. By filtering for a few keywords, you can get of 99% of the …

Depends on what's "usable" for you :-) This SDR won't be able to compete with expensive high performance receivers that have a lot of pre-selection, but there are many examples of …

Interestingly Wikipedia says the Morse version of it is Morse code "dah-di-di-dah-di, dah-dit" ( –··–· –· ) IMHO more common is to send "ESE" (. ... .) - and the other station repl…

KiCad. It's very stable and offers features that some of the professional programs lack. Extensive part library built-in, and easy to extend. Under active development.

If you find "wave hunting" this interesting but don't have a SDR / receiver of your own, there are plenty of (free to use) WebSDRs to get started: http://websdr.org/

Fantastic tool. It also has a command line version which has almost completely replaced `bc` for me.

From an average of significantly below 500k to almost 2.5M users. This drives up the global number of connecting users from approx. 3M to almost 5M. Hard to imagine that so many pe…

There was an X flare at around 19 UTC: https://www.swpc.noaa.gov/products/goes-x-ray-flux Bands are still doing fine over here in Europe, but I guess the US was hit with it in full…

As you can see if you scroll down the page (with many alerts of a similar magnitude in the last weeks), this is nothing unusual, solar disturbances of this level happen all the tim…

There were many such cases in the past. https://www.arrl.org/news/glenn-baxter-ex-k1man-sk-engaged-i... https://www.arrl.org/news/radio-amateur-to-pay-7-000-face-re... https://docs…

That would be really helpful because taken out of context, single words translated to English will often produce very confusing results. My suggestion would be to ditch the google …

Some hams take this very seriously: http://g3txf.com/QSL-Office/QSL-Off.html Great collection, constantly updated: http://hamgallery.com/whatsnew/

The description of this extension explicitly tells you it will do this (integrated email protection). Works as advertised?

95% happy with DuckDuckGo. For the rest, I resort to Google.

I may not be under the jurisdiction of the FCC :-) Some countries publish full records, others just names, others nothing at all.

On most sites I use my amateur radio callsign (HN is an exception). It's unique and very unlikely to be taken already.

rss2email + mutt

As a solution in between, for those who want to include a OSM map on their website but don't want to put load on the official OSM tile servers, a simple tile proxy may be a good id…

FWIW, for building your own private network, there is no need to rely on something like TTN (hosted by someone else - isn't that a contradiction in itself?). ChirpStack ( https://w…