• 2 Posts
  • 222 Comments
Joined 1 year ago
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Cake day: September 21st, 2023

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  • Weird, I have the Izzy repo and it doesn't show up.

    Thanks for the link!

    This is a major issue with F-Droid. I can find this via a browser, but the F-Droid app doesn't show it, even searching by name. It just doesn't exist. It happens all the time, I'm not sure why it doesn't show apps that I know are there.

    G-Droid doesn't show it either. :/






  • Does an alarm clock really need constant updates?

    I don't get this fixation on constant updates. If an app works, and risks are trivial, then what updates are required?

    This app doesn't have internet access, or storage access. I'd say risks are almost non-existant.

    And even for apps with storage or network access, again, if the other layers of your security are in place, and an app has nominal risks, constant updates aren't necessarily required. Keeping in mind that changes bring errors too.



  • For 50 miles you're going to either need HAM or a repeater on anything else.

    Even then, geography will be a huge determinant. Radio is generally line-of-sight, which is why things like GMRS/FRS and CB are limited to 5 miles - the general distance to the horizon.

    I don't remember the math for antenna elevation and line-of-sight, but for some reason I have 30ft in my head for 10 miles, given flat country (no hills in the way). Don't quote me on that, but it's an example of how elevation affects range.

    Fifty miles is a challenge, unless you can get an antenna really high, or are able to setup a chain of repeaters (I'm not sure how legal this is, GMRS regs are pretty open).

    HAM isn't limited by line-of-sight because it can reflect off the atmosphere, but it takes skill at both ends to know how to manage this. Think of HAM as using the atmosphere as a repeater, but one that's constantly changing frequencies, and you have to figure that out at any given time based on conditions (and it's not always available between 2 locations because of those same varying conditions).

    I think your best approach for now is to start with GMRS - it's an inexpensive start, and you'll learn this stuff with hands-on. Setting up your own GMRS repeater is pretty easy (once you have a little knowledge), has minimal regulation, and you can get several miles pretty quickly. There's a repeater about 4 or 5 miles from me (on a tower) that provides a connection to vehicles on the interstate more than 10 miles away. Being elevated means the repeater can "see" a lot farther.

    Here's a good place to start.







  • Without knowing what you were dealing with, it's hard to say if that's a typical time.

    Some stuff is quick and easy, some stuff seems like it should be quick and easy until you open something up and realize something was done incorrectly or unsafely.

    Depending on the fixture and location (say adding a heavy fixture to a ceiling box in a pre-1970's house), it could take much longer as code didn't require as robust mounting in the past.

    I've put in numerous ceiling fans that required sheetrock work because there wasn't enough support in an older home (in the days before the fancy mounts you can insert via the box opening). Typical time was 2 days, because of mud work and repainting.

    There's so many variables with this stuff it's best not to think you know how long something will take - you really never know what you're going to run into.


  • Define "communicate".

    With who?

    Over what distance?

    Also for what kind of scenario?

    There's probably some more things to define first, which will help guide a solution.

    In a nutshell, over short/local distances (1/4 mile to perhaps 5 miles under ideal conditions, which never happen), GMRS can be used. It's easy to learn. But it's very range limited in general.

    You could setup your own repeater on something high, and get miles of range then (I regularly pickup folks 10+ miles away because there's a repeater half way between us on a tall building).

    Long distance, HAM/HF. But that's very complex, you really have to learn quite a bit to make that happen, and whoever's on the other end would need similar skilset.

    CB can do significant distance too.

    With any radio, the higher the antenna, the farther the reach - that's the primary driver.

    Radio is a helluva rabbit hole, but I'd recommend starting with GMRS - radios are fairly inexpensive, you can get started for about $100 if you find a deal on a radio 2 pack (and not the cheap blister pack crap, something like TidRadio or better).

    Cell phones are just radios that link to a repeater nearby - the cell tower. That tower then links to the phone network, typically via cable.