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Residential VSAT experiences?
- Subject: Residential VSAT experiences?
- From: bill at herrin.us (William Herrin)
- Date: Fri, 26 Jun 2015 13:25:57 -0400
- In-reply-to: <CAH_OBif2AKeYCRU5710W7LNbZR2S_-W=C0MOi_7wdiQ2jtCy5Q@mail.gmail.com>
- References: <CAHnk=Cj4uRgyyMOW+BbgLpqPAbKCPPiLLT+sMXnfb2Jf+j8vSg@mail.gmail.com> <CAP-guGWod0ayQMq31ajL1Bq3cR3gS9uhh8i6Q9XwwEmnycOa9Q@mail.gmail.com> <CAH_OBif2AKeYCRU5710W7LNbZR2S_-W=C0MOi_7wdiQ2jtCy5Q@mail.gmail.com>
On Fri, Jun 26, 2015 at 1:19 PM, shawn wilson <ag4ve.us at gmail.com> wrote:
> On Jun 22, 2015 6:14 PM, "William Herrin" <bill at herrin.us> wrote:
>> Two-way satellite systems based on SV's in geostationary orbit (like
>> the two you're considering) have high latency. 22,000 miles out,
>> another 22,000 miles back and do it again for the return packet.
>
> Just a minor nitpick - that's 22,300 miles above the equator at sea level.
> You're probably closer to 22,500 miles away from the bird (as could your
> uplink). That's just rough math adding the tangent of 1500 miles from the
> equator in my head (plus the tangent of the curve distance from that base
> line and angle of the bird :) ).
Typically further than that because you're not only not at the same
latitude as the bird, you're not at the same longitude either.
If you want to nitpick. ;)
-Bill
--
William Herrin ................ herrin at dirtside.com bill at herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>