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DomW

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Noob here
Getting ready to pull the trigger for a Ku/Ka band system. I now live in Ohio 15 miles west of Wheeling Wv. I have a great view from HtoH. My purpose is to see all signals on the satellites (other bands will come later). Not just video but beacons, data and radio/audio etc. I want my system to pick up both K bands from bottom to top (ex. 10.7 to 12.75) covering such a wide IF will not be a problem as I will tap (w/ DC block) an SDRadio into the line, it covers 70Mhz to 6Ghz w/56Mhz BW. I know the info is out there, I have read wikis, RTFM'd and searched posts here. But I am getting brain overload/Running out of warm weather. So if I am getting more that I need or can eventually use, missing something, let me know.
I will preface all this with "I see that Rick has …"

1) QPH-031, is that my best or only bet for LNBF? Alternatives? Am I trying for more than is really there? Skewable, or is that no longer an issue (as it was way back in my C-band days). Is .3db ok, will the dish size compensate (bad joke here)?

2) STAB HH120. I see it is only discqc 1.2, is that getting a bit dated? Alternative? Can a TBS PCIe card power this or do I need an external box?

3) DS3101 Winegard 100CM Satellite Dish. I will be mounting to a wall on a third floor red brick house next to a window so I can change feeds, etc. Is this dish good or do I need more/less or different style? Different LNB mount? Better wall mount? Skewable too? Would a Dish/DTV dish be enough/better?

Going to post on "Computer and USB Satellite Receivers and Recording" my questions about TBS PCIe card, etc.
Thanks
 Dom


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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
roxme69

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Can't help you on the IF stuff. But the 6983 card is the best TBS card. Fast blind scanning (2-4mins depending on satellite) and pretty much locks anything solid. ACM/VCM, etc. And yes, the card powers the LNB and Diseqc motor (the Stab HH120 is a great choice). Not sure what dish you're looking at, and not sure what Rick sells, but I got my 1.2M ku dish on eBay, came with a LNB as well. Never had any issues with the LNB. Picked up the Stab HH120 from Rick and it moves it just fine. I use TSReader Pro, but I know there are other choices out there.
roxme69

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2. Stab can do go to commands, if you're lined up perfectly...I can tell mine to go to 91W or 127W and it'll go.
3. Depending where you are. I would def recommend a 1.2M. 1M might be *just* too small. KU is very touchy, you really need to be 'right on' for the best signal level. and bigger is always better. There's pretty much nothing I can't get with my 1.2M Geosatpro dish. It's a solid performer
crazycat

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Quote:
Originally Posted by DomW
I see that Rick has for the TS/Video, a TBS6983. This will not cover the wider IF. Is there a TBS/other card that can do better?


Wide-band tuner STV6120 cover 250-2150MHz. Used in TBS 6983, 6903/5/8.

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Strong offset dish 0.95m on Powertech DG240 motor + ALPS BSTE8-751B Ku-Universal LNB. Variant CA-902 0.95 offset dish with 3xDreamSat DS-8 Ku-Universal LNBs (13E+4.8E+4W) + Variant CA-600 Ku-Circular LNB 36E + DiseqC 1.0. STB: GI8120 Lite. PC DVB: Omicom S2 PCI; TBS 6983 PCI; TBS QBox-CI USB(5980), 5927.
DomW

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Reply with quote  #5 
Thanks
This is the info I need to make the right decision

roxme69

Stab HH120 with 1.2m dish. I will look at more dishes. TSReader, I used that when over-air TV went digital, I will check it out again.

crazycat
Great, IF is covered then. Do you feel that the STV6120 is currently the best chipset for what I am looking to do? The TBS6983 is older, right, and would be better than the 6903/5/8? I will do some comparison searching.  The TBS6908 is a Professional card, does that mean something more for us? Did the 6983 have IF loop-thru at one time? Brain fog again.

 Thank again, Dom


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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
crazycat

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No any IF loop-thr, just two inputs.
6903 with FPGA-based PCI-E bridge just replacement 6983 with SAA7160 PCI-E bridge. Same dual tuner/demod STV6120/STV0910ADB.

I have 6983 ~2year, work ok.

6905/8 just quad-input cards with 2x STV6120/STV0910.
6905 have broadcast version STV0910BDB (no have full ACM/VCM and 16/32APSK support)

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Strong offset dish 0.95m on Powertech DG240 motor + ALPS BSTE8-751B Ku-Universal LNB. Variant CA-902 0.95 offset dish with 3xDreamSat DS-8 Ku-Universal LNBs (13E+4.8E+4W) + Variant CA-600 Ku-Circular LNB 36E + DiseqC 1.0. STB: GI8120 Lite. PC DVB: Omicom S2 PCI; TBS 6983 PCI; TBS QBox-CI USB(5980), 5927.
bpalone

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Reply with quote  #7 
Just suggestion on where to mount.  Unless there is an absolute need to mount the dish that high up in the air, I wouldn't.   It is much easier to work on, on the ground.  Just my $0.02 worth.  Keep life simple.
roxme69

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Quote:
Originally Posted by bpalone
Just suggestion on where to mount.  Unless there is an absolute need to mount the dish that high up in the air, I wouldn't.   It is much easier to work on, on the ground.  Just my $0.02 worth.  Keep life simple.


I agree with this, need to tweak KU dish from time to time (wind/weather). I put mine on a non penetrating roof mount set on a 3x3 concrete slab in my yard. Use $1 concrete blocks from Home Depot to weigh it down. No problem.
DomW

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Crazycat
  I think I am understanding it better now. TBS6908 is replacement (similar enough) to 6983 that 6908 can run same programs, correct? Would I notice any difference in performance with extra tuner(s) or different PCI-E interface? This would allow a tuner for each circular and linear polarization or Ku Ka input?
 Thanks
 Dom

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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
DomW

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Thanks for shocking my memory back 30 years to when I first bought my 12' Conifer C-band dish. I would drag my step ladder out to adjust or swap feed horns on it while the ladder slowly sank into the lawn. I will rig up something portable around the yard till I have worked out what works etc. I would loose over half the sats while down in the yard. Then use a ridge mount that would place the dish a meter closer to the window and right in front of it. I would rather not penetrate the brick wall if I can help it.
 Thanks again.

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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
sat45

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Reply with quote  #11 
6903 is replacement for 6983. 6908 is like 2x6903 (6903 = 2 tuners, 6908 = 4 tuners).
6903 ans 6908 should have the same performance and advanced possibilities for C, Ku and Ka band (ACM/VCM, MIS+PLS, many other things, but without DVB-S2X).
wejones

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Reply with quote  #12 
Getting back to some of the earlier posts, regarding the need for wide bandwidth, circular transponders and Ka......
It seems like you are trying to create a system that can do everything, with a single dish, LNBF, receiver combination, but just isn't going to happen.  To do everything, you're probably going to need more than one dish, more than one LNBF, and more than one receiver. 
I know that you were put at ease with respect to the bandwidth issue, however I get the feeling that you are thinking about receiving both regular FSS linear (11700-12200) and DBS circular (12200-12700) bands using the same receiver.  Problem is, that most of the transponders in the circular DBS band cannot be locked with any of the receivers currently being considered since most of them use either DSS or turbo modes.  Ie, you'd need another receiver for those. {Although you might add the TBS-5925/6925 to the receivers considered, since that would add DSS to the capabilities (however not with Linux).  Also, there is at least one circular sat in the FSS band, and that will require a special LNBF. 
    Also, assuming you're looking for a system to do everything, you're currently considering a system that might do FSS and DBS with an LNBF such as the Invacom quad, but that won't do the low Ku band below 11700. For that, you'd need a universal LNBF, however that wouldn't do the DBS band, and you'd still need other receivers to do DSS, turbo, and DCII modes. 
    You asked about passthru ports above.  The TBS-6925/5925 receivers do have a passthru, which can be sent to your SDR receiver or another receiver capable of some of the other modes.  The 6925/5925 receivers do the APSK and VCM/ACM modes just like the 6983 and other receivers now being considered, although they aren't quite as good at separating out individual streams out of the ACM and multi-stream modes. 
   Anyway, the point of my post is that you can't do everything with one system.  You can piggyback LNBFs on the dish, but that decreases your signal quality significantly.  And you can use splitters inside to give different receivers access to the signal, but that gets messy with respect to which receiver controls things.  Anyway, I think in the long run, you're going to want more than one system.

   On another topic, I'm curious re the choice of the SDR.  I have one of the very cheap SDRs, which only has a 2 MHz bandwidth.  I've been wanting to upgrade to an SDR with bandwidth wide enough to view some of the broader video transponders.  I've looked at several, but it seemed like the receivers with very wide BW aren't compatable with some of the software that works with the cheaper SDRs, not to mention the fact that they are much more expensive.  Anyway, I'm curious re what factors went into your choice of an SDR, because I had almost compromised on one with intermediate BW in order to get more software compatibility and other things.  (I can't remember which SDRs I was leaning towards now, and can't find my notes.)

   

crazycat

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Reply with quote  #13 
Update - stv6120 capture maximum 72mhz transponder. So for future KA band usage maybe need more up to 100mhz. For this purposes better suitable stv6111.
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Strong offset dish 0.95m on Powertech DG240 motor + ALPS BSTE8-751B Ku-Universal LNB. Variant CA-902 0.95 offset dish with 3xDreamSat DS-8 Ku-Universal LNBs (13E+4.8E+4W) + Variant CA-600 Ku-Circular LNB 36E + DiseqC 1.0. STB: GI8120 Lite. PC DVB: Omicom S2 PCI; TBS 6983 PCI; TBS QBox-CI USB(5980), 5927.
DomW

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Reply with quote  #14 
Wejones
 In a sense you are right,  on reflection, I am trying to jump back into satellite hunting and do it all completely in one swoop. But asking all the questions I am realizing that baby steps are better as all my knowledge is outdated. So to start I will get a 1.2m dish and make it transportable. The best view I will then have is less than straight south (I am 15mi west of Wheeling Wv) to just above the eastern horizon. To look west I would need to place the dish up at the third floor/attic or (wife says very unlikely) in the front yard.  I’ll need to check what foot prints I can pick up and what band and polarization? If someone can recommend an LNB for that view that is low noise and stable I would appreciate it. Will the TBS6908 work for those sats too? To the SDR. I had several radios to cover different bands, the Icom R7000 was my workhorse. I had hacked a WJ pan-adapter to view its IF. I used a HP8551 spectrum analyzer to look at whole c-band transponders. When I started looking at SDR the FunCubeDongle was it for under $1000. I looked at Ettus USRP SDR radios and liked what I saw. Latter Ettus brought out the more affordable B200, USB 3.0 (with a couple compatibility MB USB 3 chipset caveats) for ~$650. It covered 70Mhz to 6Ghz continuous, 56Mhz could be digitized/viewed at one time. I wanted to be able to pull in the entire band (FM broadcast, aircraft or trunked systems etc) and then demodulate several signals at once. And to do this I have had to learn GnuRadio, Yet Another Learning Experience. GQRX works well with it. If Airspy had been available then I would have gone with it as I did not plan on transmitting and it is more compatible with the hobby type software. Check out the Ettus B series mini boards.
  Dom

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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
DomW

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Reply with quote  #15 
Crazycat
 I will check out the other chip but I will probably go with theTBS6908 at this time since it seems to have good Linux support (correct?). Though will it work with the sats referenced above? Looking at the 6903 you get three more receivers for $40 each with the 6908. And hopefully if I screw up while looking for the IF signal test points or traces, I will still have three more receivers left.  [biggrin]
  Dom

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TBS6903, QPH-031, SG-2100, Prodelin 1.2m, Current Linux Flavor [Arch]Mint, RTL-SDR dongles and Ettus B200 for SDR.
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Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

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