The next generation of Inmarsat I-5 satellites will be somewhat revolutionary for maritime services... Previous Inmarsat stuff on the I-3 and I-4 satellites was (and is) L and S-band based and very low capacity in terms of each spot beam.
http://www.inmarsat.com/the-i-5-satellites/ http://space.skyrocket.de/doc_sdat/inmarsat-5.htm An I-5 user terminal will look like a small flat panel phased array Ka-band antenna (for non-moving use) or a 0.2 to 0.3 meter sized parabolic motorized self aiming/aligning dish in a radome, for maritime applications. The thing about Inmarsat it that it's all controlled by one company, the equipment is generally proprietary, whereas if a company sets themselves up as a regular C, Ku and Ka-band VSAT teleport operator the equipment can be pieced together from 15+ different manufacturers, there's industry standards that apply, and the satellite space segment capacity (bent-pipe FDD transponders in geostaionary orbit) is owned by 15+ different companies (Intelsat, SES, Eutelsat, Chinasat, the russians that run the Yamal series satellites, etc) On Thu, Jan 28, 2016 at 1:12 PM, Chuck McCown <[email protected]> wrote: > My business partner was trying to get me to go along with a 20 meter dish > (at our HQ) to hit imarsat to serve oil rigs in Sakhalin island. I did not > like any aspect of the deal, especially the fact the Russians would not > give us any assurances that we retain ownership, that we have exclusivity > or even simple permission to serve etc etc. Good thing too, they took over > and privatized all the oil gear in that area about a year later. I am so > glad I held back. Business partner only lost $25K on that venture. I lost > nothing. > > *From:* Eric Kuhnke <[email protected]> > *Sent:* Thursday, January 28, 2016 2:05 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] AT&T Long Lines > > Looks like the remains of pedestal foundations for dishes the same age and > era as the Jamesburg dish, which is becoming increasingly rotted/rusted as > the current owner is determined to sell it, but only for a very high price: > > https://en.wikipedia.org/wiki/Jamesburg_Earth_Station > > > http://www.theatlantic.com/technology/archive/2012/02/earth-station-the-afterlife-of-technology-at-the-end-of-the-world/252454/ > > http://www.jamesburgdish.org/ > > > http://latimesblogs.latimes.com/technology/2012/01/for-sale-nuclear-bomb-proof-space-station-in-carmel-valley.html > > > In modern satellite telecommunications it's useless, as any money in the > range of $150-200k that could be put into refurbishing it (such as for > C-band SCPC services to South Pacific island nations that are within > transponder reach of the US west coast) would be better spent on a > new-build modern 13 meter Andrew/Commscope dish. > > Or on a triplet set of redundant 3.5 meter size o3b terminals > (active/active/standby spare) and the lower monthly cost of o3b service. > > > On Thu, Jan 28, 2016 at 12:26 PM, Ken Hohhof <[email protected]> wrote: > >> Supposedly this one was dismantled: >> >> http://long-lines.net/places-routes/HanoverCS_IL/index.html >> >> but the dishes or some remains of them still seem visible on Google >> Earth. I seem to remember the list will not allow .kmz attachments, but >> here are the coordinates: >> >> 42°18'35.02"N, 90°21'25.38"W >> >> >> *From:* Eric Kuhnke <[email protected]> >> *Sent:* Thursday, January 28, 2016 2:13 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] AT&T Long Lines >> >> I find it interesting how the very oldest C-band satellite earth stations >> (like Brewster, WA) were usually located in very remote/rural areas and >> even intentionally in valleys to shield them from terrestrial emissions. >> Brewster was such a great site for a quiet earth station that there is a >> huge radio telescope colocated just a couple of km away further down the >> valley. >> >> In the modern era with tight RPE Ku and Ka-band earth station dishes it's >> totally feasible to put a 4.5m Tx/Rx dish on the roof of a building in or >> near a major metro area (example: the recently built Ka-band sites located >> near Spokane, WA and Denver, CO) and make efficient use of spectrum without >> much worry about interference. >> >> On Thu, Jan 28, 2016 at 12:07 PM, Hardy, Tim <[email protected]> >> wrote: >> >>> 4 GHz is still a fixed point-to-point band, but it’s extremely difficult >>> to engineer anything new due to the thousands of satellite ground stations >>> that share the band on a co-primary basis. The HFT crowd has been >>> coordinating 4 GHz between Chicago and New York and it will be interesting >>> to see if any of this actually gets built. >>> >>> >>> >>> Engineering 6 GHz point-to-point can be just as difficult in many areas >>> due to co-primary satellite uplinks that are licensed full-band, full arc. >>> >>> >>> >>> *From:* Af [mailto:[email protected]] *On Behalf Of *Jaime Solorza >>> *Sent:* Thursday, January 28, 2016 2:11 PM >>> *To:* Animal Farm >>> *Subject:* Re: [AFMUG] AT&T Long Lines >>> >>> >>> >>> The great Chuck has spoken...probably read something similar in CQ rag >>> when God was a baby.. >>> >>> On Jan 28, 2016 12:07 PM, "Chuck McCown" <[email protected]> wrote: >>> >>> There was a time when C band satellite shared spectrum with terrestrial >>> microwave. In a town I grew up near, they had a hard time with their first >>> HBO TVRO installation due to a Pacific Northwest Bell radio a few blocks >>> away. >>> >>> >>> >>> *From:* George Skorup <[email protected]> >>> >>> *Sent:* Thursday, January 28, 2016 12:03 PM >>> >>> *To:* [email protected] >>> >>> *Subject:* Re: [AFMUG] AT&T Long Lines >>> >>> >>> >>> They regularly did 6 and 11 common carrier bands. I don't remember what >>> 4GHz was paired with, possibly 8GHz. >>> >>> On 1/28/2016 8:26 AM, Chuck McCown wrote: >>> >>> They made some crazy circular feeds for those horns. You could put a >>> very wide range of frequencies through them and with the correct feed, you >>> can have many radios and many different bands on all at the same time. >>> >>> >>> >>> *From:* Erich Kaiser <[email protected]> >>> >>> *Sent:* Wednesday, January 27, 2016 6:26 PM >>> >>> *To:* [email protected] >>> >>> *Subject:* Re: [AFMUG] AT&T Long Lines >>> >>> >>> >>> More info on the Horns >>> >>> >>> >>> >>> http://www.telephonecollectors.info/index.php/wiring-diagrams/doc_view/8708-402-421-100-i3 >>> >>> >>> >>> >>> >>> Erich Kaiser >>> >>> North Central Tower >>> >>> [email protected] >>> >>> Office: 630-621-4804 >>> >>> Cell: 630-777-9291 >>> >>> >>> >>> On Wed, Jan 27, 2016 at 7:24 PM, Erich Kaiser < >>> [email protected]> wrote: >>> >>> We deployed 6ghz microwave utilizing the horn antennas, they require >>> maintenance but, work really well...That was the network I sold to JAB/T6. >>> They have no idea how that stuff works or any care to learn... >>> >>> >>> >>> >>> https://www.google.com/search?q=KS-15676+microwave&rlz=1C2GGGE___US556US556&biw=1920&bih=911&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiJp9vxq8vKAhUmvIMKHSrKBMIQ_AUICSgE&dpr=1#imgrc=8xtXypST-6HK4M%3A >>> >>> >>> >>> I still have waveguide parts(Keeping) and circular waveguide(Which is >>> going to the scrap yard) >>> >>> >>> >>> Awesome stuff... Still CatA for 6ghz. >>> >>> >>> >>> Erich Kaiser >>> >>> North Central Tower >>> >>> [email protected] >>> >>> Office: 630-621-4804 >>> >>> Cell: 630-777-9291 >>> >>> >>> >>> >>> >>> On Wed, Jan 27, 2016 at 5:58 PM, Sean Heskett <[email protected]> wrote: >>> >>> there is a "Long Lines" coffee table book. >>> >>> For all of you that would like to geek out on some antenna porn ;-) >>> >>> >>> >>> http://spencerjharding.com/project/the-long-lines/ >>> >>> >>> >>> http://spencerjharding.com/books/the-long-lines/ >>> >>> >>> >>> -sean >>> >>> >>> >>> >>> >>> >>> >>> On Tue, Jan 26, 2016 at 11:31 PM, Eric Kuhnke <[email protected]> >>> wrote: >>> >>> There are some amazing Long Lines sites in WA and ID that serve almost >>> no useful purpose, now that all long distance traffic moves via fiber... >>> The ones closer to major metro areas have more tenants and more value to >>> their new owners. >>> >>> The Long Lines sites that were built solely as a means to get a PTP >>> relay over a major mountain range are amazing. Built with massive diesel >>> tanks and ventilation intakes 18' off the ground due to snow pack. These >>> ones have the original horn antennas and not much else, maybe some VHF/UHF >>> omni radio repeaters for forestry/national parks. >>> >>> Bethel Ridge WA, about 1820 meters elevation >>> https://www.google.com/maps?ll=46.71724,-121.10068&z=14&t=h >>> >>> Goldendale WA >>> https://www.google.com/maps?ll=45.99800,-120.69536&z=14&t=h >>> >>> Leadore ID, one of the highest I can find, it's at 2750m elevation >>> https://www.google.com/maps?ll=45.99800,-120.69536&z=14&t=h >>> >>> Bring a snow-cat in winter.... >>> >>> >>> >>> >>> >>> On Tue, Jan 26, 2016 at 6:05 PM, Mike Hammett <[email protected]> wrote: >>> >>> I have a bunch I took of a Long Lines concrete tower in Springfield, OH >>> that was being torn down on my FB somewhere. >>> >>> Then there's long-lines.net >>> >>> >>> >>> ----- >>> Mike Hammett >>> Intelligent Computing Solutions >>> http://www.ics-il.com >>> >>> >>> ------------------------------ >>> >>> *From: *"Mike Hammett" <[email protected]> >>> *To: *[email protected] >>> *Sent: *Tuesday, January 26, 2016 7:56:50 PM >>> *Subject: *Re: [AFMUG] AT&T Long Lines >>> >>> I didn't get enough pics on this site: >>> https://www.dropbox.com/sh/cfk3jvi6u5jaq1x/AACv12KJ32ZrUbw5mwSuAVuxa?dl=0 >>> Lots of awesome stuff here. >>> >>> >>> >>> ----- >>> Mike Hammett >>> Intelligent Computing Solutions >>> http://www.ics-il.com >>> >>> >>> ------------------------------ >>> >>> *From: *"Josh Reynolds" <[email protected]> >>> *To: *[email protected] >>> *Sent: *Tuesday, January 26, 2016 7:41:12 PM >>> *Subject: *Re: [AFMUG] AT&T Long Lines >>> >>> Some of the old AT&T sites are cool. Hardened bunkers with walls many >>> feet thick. >>> >>> On Jan 26, 2016 7:36 PM, "Ken Hohhof" <[email protected]> wrote: >>> >>> Yeah, you wouldn’t want information like this getting out: >>> >>> >>> >>> http://wikimapia.org/10668587/AT-T-Norway-IL-Class-1-Switching-Center >>> >>> >>> >>> Not a big secret, since it’s a very distinctive looking tower visible >>> from 10-20 miles away due to the high ground it sits on. It was also one >>> of the ground sites for the Air Force 1 secure communications network, I >>> don’t know if that’s still operational, I think maybe it is. >>> >>> >>> >>> Last I heard DeKalb, IL is still an active fiber POP. Tower is not >>> used, but they won’t least space or sell it. It’s right in town and not a >>> very well kept secret. >>> >>> >>> >>> >>> >>> *From:* George Skorup <[email protected]> >>> >>> *Sent:* Tuesday, January 26, 2016 7:20 PM >>> >>> *To:* [email protected] >>> >>> *Subject:* Re: [AFMUG] AT&T Long Lines >>> >>> >>> >>> But AT&T is the devil, so again, just sayin. >>> >>> On 1/26/2016 7:16 PM, Jaime Solorza wrote: >>> >>> Ha...as if we are afraid of AT&T....I know most on this list have ripped >>> tags off sofas and mattresses. So there >>> >>> On Jan 26, 2016 6:09 PM, "George Skorup" <[email protected]> wrote: >>> >>> AT&T doesn't like it when you list active sites. Just sayin. >>> >>> On 1/26/2016 11:33 AM, Eric Kuhnke wrote: >>> >>> It has tons in the midwest, I think I unchecked several sections before >>> I saved the KML. I was looking only at the Pacific Northwest. Open the >>> drop-down arrow that is the main category and re-check the other 4 or 5 >>> categories. >>> >>> >>> >>> On Tue, Jan 26, 2016 at 8:13 AM, Keefe John <[email protected]> >>> wrote: >>> >>> Nothing in the midwest either. >>> >>> >>> >>> On 1/26/2016 9:51 AM, Jerry Head wrote: >>> >>> Same here for Alabama. >>> >>> On 1/26/2016 9:24 AM, Chuck Hogg wrote: >>> >>> It doesn't have most of the Kentucky ones. Interesting...I can name a >>> bunch more... >>> >>> >>> >>> Regards, >>> Chuck >>> >>> >>> >>> On Mon, Jan 25, 2016 at 11:50 PM, Eric Kuhnke <[email protected]> >>> wrote: >>> >>> Looks like the list may be removing attachments... Here's the file: >>> >>> http://tengigabit.ca/~eric/ATT_longlines_USA.kmz >>> >>> >>> >>> On Mon, Jan 25, 2016 at 6:22 PM, Gerard Dupont III <[email protected]> >>> wrote: >>> >>> Did the list scrub the attachment? Link maybe? >>> >>> >>> >>> Thanks, >>> >>> Gerard >>> >>> >>> >>> On Mon, Jan 25, 2016 at 7:52 PM, Eric Kuhnke <[email protected]> >>> wrote: >>> >>> I recently came across this KML file online. It's KML/KMZ format for >>> Google Earth. >>> >>> I thought I knew where all the notable towers in WA state were, but >>> turns out I was missing a few on my previously self-made AT&T Long Lines >>> map. Kudos to whoever put this together. >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> > >
