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667@lemmy.radioto
Showerthoughts@lemmy.world•It would be so funny if China colonizes Mars, then the Martian Colonists declare independence, and Mars become a new bastion of Freedom and Prosperity.English
1·9 days agoOr to Stranger in a Strange Land, at least the very beginning.
However you go about it, keep it simple. If it’s complicated or a chore to do, compliance will likely fall off and you might not maintain it.
I do the YMD thing with folders, but fail to do the text file; it’s not a deal killer for me, but there are times we have to figure out what on earth we were doing. We can get a lot of contextual clues from the photos themselves. Depending on what you’re shooting, establishing shots can be really helpful.
Folders get YYYY-MM-DD, files get whatever they get. A simple text.txt file get placed in each folder describing the photos of that day.
667@lemmy.radioto
Showerthoughts@lemmy.world•Billionaires are robbing us blind, but i still feel like a theif taking a few hundred dollars in cash out of my bankEnglish
22·14 days agoWhen you borrow $1M from the bank, it’s your problem. When you borrow $100M, it’s the bank’s problem.
667@lemmy.radioto
Ask Lemmy@lemmy.world•Cloudflare went down today and took half of the internet with it. How does one company have that much impact? Do you think that's concerning?English
791·22 days agoRelevant XKCD, as always:

XKCD//2347
667@lemmy.radioto
Ask Lemmy@lemmy.world•what everyday technology do you think future generations will find completely baffling?English
111·27 days agoHey everyone, that guy doesn’t know how to use the three seashells lol
667@lemmy.radioto
Ask Lemmy@lemmy.world•Got the ARRL handbook. Smells like a toxic dump site. Any fixes for new book smell of death?English
17·1 month agoI bet it’s just off-gassing the spine glue or cover coating or ink. Set them someplace outside but shaded and out of the elements for a few days.
667@lemmy.radioto
Ask Lemmy@lemmy.world•Radio wizards and witches, what is the deal with antenna for the ~7 MHz amateur band?English
2·1 month agoThere is certainly a lot to learn, and you would benefit greatly from joining the hobby officially. If you are US-based, you can take the amateur radio exam after memorizing the answers for the exam (a legal and encouraged practice), the exam itself can be administered remotely via Zoom.
I am beyond my technical knowledge if I tried to explain why we use transformers to get an impedance match; I only know what we do.
667@lemmy.radioto
Ask Lemmy@lemmy.world•Radio wizards and witches, what is the deal with antenna for the ~7 MHz amateur band?English
4·1 month agoGreat questions, one which highlights my own knowledge gap beyond knowing that for a given feedline and antenna combination, you’ll have some measure of impedance. At the most basic level, your radio will “see” some impedance value. In the amateur radio world this is generally 50Ω. If our antenna system (feedline + radiator) presents 450Ω (quite common), we use a 9:1 transformer to get it to match. This allows us to use our radio on that system without (1) stray current returning to the radio and damage our transmission circuits, and (2) at full power but with inherent loss of signal owing to antenna inefficiency.
Case in point, I have a commercially-purchased multi-band EFHW antenna which presents varying amounts of impedance to the radio. This system includes a transformer (I think it’s 9:1) so that on the bands of interest, there’s a resistance match and as a result an SWR that’s suitable to make decent transmissions on.
As a tangential example, J-pole antennas have a built-in matching system which uses no special parts. It’s composed of a matching section and radiator. The combination of matching section, radiator length, and physical feedpoint allow this type of antenna to sort of self-manage impedance.
The difference here is that a j-pole is a monoband antenna, and a long wire with transformer can often be functional on many bands, depending on length, where the lowest useable frequency is the inverse of its length.
667@lemmy.radioto
Ask Lemmy@lemmy.world•Radio wizards and witches, what is the deal with antenna for the ~7 MHz amateur band?English
8·1 month agoWhat challenges are you facing? It’s a small mercy that antenna fundamentals are basically the same across all frequencies. The resonant element must be sufficiently long as to present an impedance match (or be brought down through via a transformer; 9:1, 49:1, or whichever flavor you need).
On 40m (~7Mhz) a dipole would need to be ~67’ long. You can get away with shorter, bearing in mind the compromises which come with that.
Nice try. I’m not falling for yet another hidden Saddam.
667@lemmy.radioto
Ask Lemmy@lemmy.world•What is your favorite version of FTL in science fiction?English
24·2 months agoI read all of that in Peter Capaldi’s voice. You made my day
667@lemmy.radioto
Ask Lemmy@lemmy.world•What is your favorite version of FTL in science fiction?English
100·2 months agoInfinite Improbably Drive in Douglas Adams’ Hitchhiker’s Guide to the Galaxy.
667@lemmy.radioto
Ask Lemmy@lemmy.world•What is your favorite version of FTL in science fiction?English
501·2 months agoSpace cocaine is the best take on spice I’ve ever seen.
667@lemmy.radioto
science@lemmy.world•Man gets drunk, wakes up with a medical mystery that nearly kills himEnglish
7·2 months agoMy first thought was Lupus.
667@lemmy.radioto
Showerthoughts@lemmy.world•If the USA ever rewrites their constitution it will likely have embedded ads.English
14·2 months agoIt’s what plants crave.
To be real, the worst part isn’t that we’re joking about it; it’s that it’s already happened:

One of the best no-noise locations I ever did was in a fully powered-down sailboat in the southern lagoon at Fort Jefferson, Dry Tortugas. Leaky consumer electronics are the worst.
To contrast, I managed to work Indonesia from Alamogordo NM despite being in a residential neighborhood, HVAC capacitors and foreign over-the-horizon-radar (OTHR) be damned. Taught me a lot about being patient and picking out transmissions in the noise.



This situation is still fucked up.