TeeVee over Fibre
in [Design]
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From: David Lesher on 12 Apr 2010 16:16 Oh learned s.c.d; the source spring of all knowledege; I humbly request a very small smidgen of your wisdom..... TV over fibre -- No, not the stuph Verizontal sells.... I have a friend & client building a log cabin in the woods. (To set the scale, the [indoor] pool is 80Kgallons.) It's 1200 ft to where the solar array and satellite dishes will be. My question is: who if anyone makes the electronics needed to convert to glass for both video down and any data back up? I have as little to do with TV, much less satellite TV, as possible; I assume you can use one dish on multiple receivers, which implies the feed from the dish is at some IF but is broadband of many megahertz. (The alternative is the channel selection takes place at the dish; which would one channel at a time. I understand that's how SBC's U-verse is set up; the settopbox actually sends channel commands back to the 29-B coffin..) I welcome enlightenment. -- A host is a host from coast to coast.................wb8foz(a)nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
From: Copacetic on 12 Apr 2010 16:26 On Mon, 12 Apr 2010 20:16:22 +0000 (UTC), David Lesher <wb8foz(a)panix.com> wrote: >Oh learned s.c.d; the source spring of all knowledege; I humbly >request a very small smidgen of your wisdom..... > >TV over fibre -- No, not the stuph Verizontal sells.... > >I have a friend & client building a log cabin in the woods. >(To set the scale, the [indoor] pool is 80Kgallons.) > >It's 1200 ft to where the solar array and satellite dishes will >be. My question is: who if anyone makes the electronics needed >to convert to glass for both video down and any data back up? > >I have as little to do with TV, much less satellite TV, as >possible; I assume you can use one dish on multiple receivers, >which implies the feed from the dish is at some IF but is >broadband of many megahertz. > >(The alternative is the channel selection takes place at the >dish; which would one channel at a time. I understand that's how >SBC's U-verse is set up; the settopbox actually sends channel >commands back to the 29-B coffin..) > >I welcome enlightenment. You can make it fiber if you convert everything to a network stream at the feed end and back to video/data/all else on the receive side. Essentially placing a server at the signal source, and use a media server in the home to pull streams from it. Use 10GbE or 100GbE over fiber. There will be no inexpensive method to pipe the streams you want, the way you want. I just hope you know that.
From: Sjouke Burry on 12 Apr 2010 16:55 David Lesher wrote: > Oh learned s.c.d; the source spring of all knowledege; I humbly > request a very small smidgen of your wisdom..... > > TV over fibre -- No, not the stuph Verizontal sells.... > > I have a friend & client building a log cabin in the woods. > (To set the scale, the [indoor] pool is 80Kgallons.) > > It's 1200 ft to where the solar array and satellite dishes will > be. My question is: who if anyone makes the electronics needed > to convert to glass for both video down and any data back up? > > I have as little to do with TV, much less satellite TV, as > possible; I assume you can use one dish on multiple receivers, > which implies the feed from the dish is at some IF but is > broadband of many megahertz. > > (The alternative is the channel selection takes place at the > dish; which would one channel at a time. I understand that's how > SBC's U-verse is set up; the settopbox actually sends channel > commands back to the 29-B coffin..) > > I welcome enlightenment. There is no advantage in fiber for a direct connection this short.
From: Paul Keinanen on 12 Apr 2010 17:10 On Mon, 12 Apr 2010 20:16:22 +0000 (UTC), David Lesher <wb8foz(a)panix.com> wrote: > >I have a friend & client building a log cabin in the woods. >(To set the scale, the [indoor] pool is 80Kgallons.) So price is no problem ? >It's 1200 ft to where the solar array and satellite dishes will >be. My question is: who if anyone makes the electronics needed >to convert to glass for both video down and any data back up? Cable-TV companies have used a variety of high linearity transmitters to transfer something like 0-800 MHz across a single fiber. Using separate receivers for each sub-band and polarization on using WDM for each satellite / subband / polarization would allow all visible satellites down the same fibre. >I have as little to do with TV, much less satellite TV, as >possible; I assume you can use one dish on multiple receivers, >which implies the feed from the dish is at some IF but is >broadband of many megahertz. > >(The alternative is the channel selection takes place at the >dish; which would one channel at a time. I understand that's how >SBC's U-verse is set up; the settopbox actually sends channel >commands back to the 29-B coffin..) If the cabin has less than a dozen receivers, this would definitively be the simplest option (provided that there are no extreme temperature requirements at the head end). 1 GbE fiber should easily do the job.
From: VWWall on 12 Apr 2010 17:11
David Lesher wrote: > Oh learned s.c.d; the source spring of all knowledege; I humbly > request a very small smidgen of your wisdom..... > > TV over fibre -- No, not the stuph Verizontal sells.... > > I have a friend & client building a log cabin in the woods. > (To set the scale, the [indoor] pool is 80Kgallons.) > > It's 1200 ft to where the solar array and satellite dishes will > be. My question is: who if anyone makes the electronics needed > to convert to glass for both video down and any data back up? > Co-ax is fine for that distance; why do you assume fiber? > I have as little to do with TV, much less satellite TV, as > possible; I assume you can use one dish on multiple receivers, > which implies the feed from the dish is at some IF but is > broadband of many megahertz. > The LNB, (Low Noise Broadband), amplifier, at the dish converts the K-band signals to an IF frequency in the 50 MHz-2000 MHz band which is then sent to the receiver(s), where the desired channel is picked out. More than one dish, or a dish with multiple feeds may be required as some TV satellite systems use more than one satellite. An additional amplifier will be needed to drive 1200 feet of coax, but these are readily available. Many apartment buildings have co-ax runs >1200'. For wide-band net operation via satellite the system is entirely different, but co-ax would be adequate here as well. Depending on the bandwidth required, the data could be di-plexed on the same co-ax or on a separate run. -- VWWall, P.E. |