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Cake day: March 31st, 2025

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  • Stirling engines are woefully inefficient tho, PV panels are better unless you’re intending to supplement heat source with biomass or such. In a climate where most of energy is used for heating and little to none on AC, it just makes more sense to use solar collectors instead of PV because most of energy use will be in form of heat anyway, and per square meter collector will deliver much more. If you can couple excess heat production to seasonal energy storage, this gets you most or all of heat needs year round covered by solar, if you don’t there’s still free hot water in the summer and seriously lowered gas bill through the year. Small PV panel might make sense to keep pumps running or cover some of the rest of needs but won’t shift balance heavily either way. In a place where major use of energy is AC this approach makes no sense and PV panels with daily or a bit longer lasting storage of energy, be it in batteries or thermal (tanks of cold glycol or ice or whatever) would be the way to go, because the most sunny day is also the day when you need AC the most and this way you get most of your energy needs covered












  • lora bitrate and radiated power are tiny and such considerations are only important in peacetime. gps is jammed now routinely and it’s more important than 95% of iot dogshit. telemetry and remote control that matters is either wired or has reserved separate band, like power grid switches. not sure wdym by logistics

    you also have to be stealthy and if you emit you’re seen and if you’re seen you’ll be found and soon dead. lora doesn’t help you with that especially if you increase power to overcome jamming. using starlink in iran now for example is a capital offense. last time i’ve checked, irgc ew looks for starlink wifi and they can find it even if it’s renamed because of its distinct signature. it takes less to spot lora. they do not look for uplink for some reason but they try to jam it and downlink too








  • on point 3, long distance communication invariably uses highly directional antennas, which means these need to be aimed precisely, which means special automated gimballed antenna set that would drop signal anyway probably

    also you definitely don’t want to deal with rotating gas seal that is also under pressure and fail-deadly, these already wear out quickly with sporadic use on earth. if there are two sections, one spinning and one not, both would have to be sealed