They did enable mobile roaming in UA: https://twitter.com/elonmusk/status/1499442132402130951 On Thu, Mar 3, 2022 at 2:01 PM Larry Press wrote: > > The balance, as David mentions, is on the value of the target vs. the > effort required to strike. > > The value of allowing government and resistance leaders and journalists to > communicate with each other and the outside world seems quite high, making > the terminals attractive targets for the Russians. > > The cost of locating and striking a target also seems high -- Ukraine is > large and the terminals are portable. SpaceX is testing roaming without > re-registration in California/Nevada ( > https://circleid.com/posts/20220225-spacex-is-testing-starlink-roaming). > If SpaceX is listening -- consider enabling roaming in by the users in > Ukraine. > > Larry > > ------------------------------ > *From:* Starlink on behalf of > Mike Puchol > *Sent:* Wednesday, March 2, 2022 1:06 AM > *To:* Dave Taht ; David Lang > *Cc:* starlink@lists.bufferbloat.net > *Subject:* Re: [Starlink] spacex & ukraine > > Thank you Dave, the honor is mine to share a mailing list with so many > people who know way more than I do, about any subject I could point my > finger at, so I really appreciate it. > > On the subject at hand, ELINT/SIGINT and traffic analysis has evolved > massively over the years. In the mid-90s, the Chechen president was killed > by Russia with a missile strike, based on his satcom phone signals, which > included decoding the speech and matching to ensure they were hitting the > right target. > > The balance, as David mentions, is on the value of the target vs. the > effort required to strike. It is relatively easy to monitor cellular > networks, decrypt the traffic, and triangulate to almost automatically > target & strike. The same happens with VSAT, which operates against a fixed > satellite, so an aircraft high enough will be in the path between a large > portion of the ground and the satellite. > > With Starlink, the challenge is two-fold. You must be able to detect & > locate the 4.5º wide uplink beam from a terminal, which constantly moves - > this can be done by measuring just the RF levels and using an ESA to find > the source. You must also ensure that the user of the terminal is a target > valuable enough to justify a strike, which would be a lot harder, as you > need to keep a good enough SNR to demodulate, then you’d need to decrypt. > Doing this in real time on an airborne platform is quite a challenge. > > Bottom line: unless Russia goes all-out against anyone using any form of > radio comms (phones, VSAT, satcom, Starlink, etc.) and they just blindly > strike any source of RF, a Starlink user has a good chance to avoid being > targeted by just using the terminal. Different case is if terminals get > used by the military, and Russia then assumes Starlink = military target. > We’re far from any clear scenario, so we need to wait & see. > > A couple of weeks ago I sent a Ku band LNB to Oleg, tuned to the Starlink > uplink band (12.75 - 14.5 GHz), but it arrived a couple of days before the > invasion began, so he didn’t get a chance to do any analysis on the TX side > of the terminal. > > Best, > > Mike > On Mar 1, 2022, 22:15 +0300, David Lang , wrote: > > a couple thoughts on anti-radiation missiles being fired at starlink dishes > > 1. the dishes are fairly low power (100w or less) and rather directional, > so > they aren't great targets. > > 2. dishes cost FAR less than the missiles that would be fired at them, and > are > being produced at a much higher rate (although there are probably more > missles > in the Russian inventory than spare dishes in SpaceX inventory) > > direction finding teams with boots on the ground could be more of a > threat, but > the higher frequency signals are blocked fairly easily (which is why the > dishes > need a clear view of the sky). It takes a fair amount of training to be > good at > direction finding on weak and intermittent signals. > > David Lang > > On Tue, 1 Mar 2022, Dave Taht wrote: > > Date: Tue, 1 Mar 2022 13:55:47 -0500 > From: Dave Taht > To: starlink@lists.bufferbloat.net > Subject: [Starlink] spacex & ukraine > > It is an ongoing honor to have mike puchol sharing his insights with > us, also, on this list. > > https://spacenews.com/spacex-heeds-ukraines-starlink-sos/ > > > -- > I tried to build a better future, a few times: > https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org > > > Dave Täht CEO, TekLibre, LLC > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > > > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > > > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink >