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. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
