alexpil

5 ms·

1.
Shortwave trading HFT shenanigans continue(licensing.fcc.gov)
2 points by alexpil 5y ago|0 comments
2.
by alexpil 6y ago
Not necessarily stonks, it can also be commodities (oil/etc), or currencies, or anything else. Latency arbitrage is old. Paul Julius Reuter (as in, Reuters) made his first fortune by using carrier pigeons to transmit trade data from Br
3.
by alexpil 6y ago
pfft. One nucflash=buy, two nucflash=sell
4.
by alexpil 6y ago
The decision is whether it meets the threshold "public interest" (which includes meaning of "broadcast"). And it'll be made either by FCC Media Bureau, or by Commission itself. It's highly unlikely it'll g
5.
by alexpil 6y ago
sure, balloons would do it. i've prototyped that. :)
6.
by alexpil 6y ago
I'm the guy who filed it. AMA.
7.
by alexpil 6y ago
AM radio (medium-wave/long-wave) is different from shortwave. In US, similar "utility response" is permitted as well for AM broadcasters, since 1981 https://docs.fcc.gov/public/attachments/FCC-81-258
8.
by alexpil 6y ago
https://visionscarto.net/enquete-reseaux-hft and google translate for the backstory. bandwidth is a few bits per message, a few messages per second. yes you can do more with more bits and more messages, but you can do quite
9.
by alexpil 6y ago
more specifically, gen1 constellation was 1600 satellites per inclination at 1150km, gen2 is 7100 per inclination at 350km.
10.
by alexpil 6y ago
That paper is based on gen1 constellation, and predates gen2 (350km) announcement.
11.
by alexpil 6y ago
a single orbital plane at 53' contains 7028 satellites (out of 40k total, but let's take one orbital plane) basic math, "satellite density" or "average distance between satellites" if they were just at random p
12.
by alexpil 6y ago
gen2 constellation is at 350km agl shortwave f-layer is at 200-400km agl depending on space weather difference is not that big
13.
by alexpil 6y ago
it'd be rather interestink. but shortwave will be competitive with spacex, although at, of course, lower capacities. for inter-market trading, sub-ms latency differences don't matter that much.
14.
by alexpil 6y ago
starlink latency could be faster than shortwave, once full gen2 constellation launches, and if starlink decides to care about this industry. ...disclosure: i'm the first one to build NY-Chi microwave, and Chi-Lon shortwave.
15.
by alexpil 8y ago
I'm still around and in the industry. Never promised the lowest latency, but I was the first one by two years to build NY<>Chicago.