The magic of a clear line of sight and vacuum for a good ~384'300km!
So should we do low power communications by using the moon as reflector dish?
118 0 ReplyAlso, directional vs omnidirectional antennas.
88 0 ReplyThis is the most important part.
49 0 Reply
There was a NSA program that listened to soviet messages by collecting the transmissions that bounced off the moon.
38 0 ReplyI gotta say, the moon’s really starting to sound like a fucking snitch.
9 0 Reply
Two thirds of a million kilometres under good conditions and at a precise angle to get a picture of goatse moontooth'd to my phone
Welcome to 2025!
27 0 ReplyI am worried about 2000ms ping
21 0 ReplyThat's what the anti-tachyon modulation circuit is for, to change the time phase and remove most of that lag. Once they're in sync, it's literally real time!
9 0 Reply
the distance is 384400km
That's almost the distance between my bed and the kitchen before my first cup of coffee!
31 0 ReplyIt's easy, you just need a big antenna, low noise receiver (just cool it) for low bandwidth (keeps noise power low) and no interferers in the same frequency band.
27 0 Reply*directional antenna
9 0 ReplyShow me a non-directional antenna.
4 0 Reply
Shrimple as that
8 0 ReplyIt's almost too easy
4 0 Reply
That's fair, though I think we also should thank the use of Travelling Wave Tubes (TWTs or 'twits'). These little tubes of witchcraft amplify the transmission signal to make sure we can still hear, say, the Voyager 1 that's currently over 15-billion miles away.
1 0 ReplyPerfect. Now put those on cell phones and make it fit in your pocket.
1 0 ReplyTechnology always gets better with no regard to physical limits.
(People who argue this unironically are a pet peeve of mine. Yes, there are limitations on what's possible.)
3 0 Reply
My Bluetooth buds often get interference - technically 100 mW, distance from my head to a pocket.
15 0 Replytechnically 100 mW
Technically a maximum of 100 mW, but realistically much lower than that.
9 0 Reply
I bet the receiver that had noise figure low enough to detect that signal consumed more than 3nW while doing it.
9 0 ReplyTo be fair, that's an insignificant distance for light to travel.
7 0 ReplyStill takes at least 2 seconds for the round trip.
6 0 ReplyWell, according to my ex, even 30 or 90 seconds is an interval unworthy of consideration.
7 0 Reply