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Signal Strength Comparison

Discussion in 'DIRECTV - Coax Networking (private)' started by dave29, Jun 22, 2009.

  1. litzdog911

    litzdog911 Well-Known Member

    12,233
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    Jun 23, 2004
    Mill Creek, WA
    Just got my first two DECAs connected ... one for network access and one on my HR21-200. Seems to work great so far.

    No change in satellite signal readings.
     
  2. Sixto

    Sixto Well-Known Member

    12,224
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    Nov 18, 2005
    Yep, I did the HR21-200 first also.

    Just rechecked the HR21-200 sat signal again. 101 TP1 98%, Spotbeam locals 100%. Perfect (and the same).
     
  3. Spanky_Partain

    Spanky_Partain Active Member

    5,500
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    Dec 7, 2006
    Mine are very close to the same. Here they are if anyone wants to see them.

    SAT Signal SL3-S.pdf - Measurement before DECA setup
    SAT Signal DECA.pdf - Measurement after DECA setup
     
  4. hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Jul 28, 2004
    No tuner 2 readings at all after DECA huh.....??? :eek2::eek2::eek2: :D

    Never mind....we get the idea. ;):lol:

    Thank you for sharing. :)
     
  5. litzdog911

    litzdog911 Well-Known Member

    12,233
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    Jun 23, 2004
    Mill Creek, WA
    I take it back! My HR20-700 went wonky after I installed DECA1 (for network access near my SWM8) and DECA2 on my HR21-200 in the Master Bedroom. I hadn't even installed DECA3 on this HR20-700 yet, but noticed pixelation and breakups while watching Live TV. Checking its signal readings, they were very low on Tuner 1 (mid 50s!) and ZERO on Tuner 2. I thought I fried its tuners when connecting those first two DECAs!

    After some careful troubleshooting, I discovered that the HR20-700 didn't like the Channel Vision HS2 splitters that I was using to distribute my SWM signals. Replacing those splitters with DirecTV SWM splitters helped a lot. But even then the HR20-700s readings are several points lower (high 70s)than its neighboring HR20-100 (high 80s), connected through the same number of splits. And the HR20-700s Tuner 2 readings are still a few points lower than the Tuner 1 readings.

    More details and my wiring diagram in the Issues Thread here ....
    http://www.dbstalk.com/showthread.php?p=2139006#post2139006
     
  6. carl6

    carl6 Moderator Staff Member DBSTalk Club

    12,485
    940
    Nov 15, 2005
    Seattle, WA
    Signal strengths appear to be identical before and after installation of DECA equipment. Documented all transponders on both tuners on all satellites on one unit before and after. Spot checked other units against the recorded unit, and readings were within one point plus or minus.
     
  7. webby_s

    webby_s Hall Of Fame

    1,299
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    Jan 11, 2008
    I took pictures of the signals before and then took a look at them after the install and found pretty much no difference. So I feel I don't need to report the exact numbers. Just that they were close to if not exactly the same as before. :)
     
  8. hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Jul 28, 2004
    For purposes of the First Look that Dave29 and I are assembling...

    Thank you to all for your feedback, data, and comments.

    The test team has clearly established that installing the DECA infrastructure and devices cause no negative impact to the signal levels.

    That's the information we sought to validate, and everyone has done a bang-up job in posting their results here.
     
  9. dmricke

    dmricke DBSTalk Club Member

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    Dec 15, 2006
    Grand Forks, ND
    As others have reported, my signal strengths had minimal changes after installation on my four units.

    Dale
     
  10. litzdog911

    litzdog911 Well-Known Member

    12,233
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    Jun 23, 2004
    Mill Creek, WA
    For the First Look, let's be sure to mention that "SWM-quality" splitters must be used. I had problems with my HR20-700 and my Channel Vision HS2 splitters until I replaced them with DirecTV SWM splitters. Still not sure why it only affected the HR20-700 and not my other HD DVRs or HD Receiver.

    At any rate, when DECA goes public it will be important that folks check the coax splitters.
     
  11. dave29

    dave29 New Member

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    Feb 18, 2007
    Litz,
    What model were those splitters, and did you try a different one(of the same model)?
     
  12. hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Jul 28, 2004
    Oh,...rest assured...for the First Look, it will be "mentioned" for sure...

    Your input has been appreciated on that topic, and Dave29 also asked if you could share the specific model splitter that was the source of "issues".

    Thanks.
     
  13. litzdog911

    litzdog911 Well-Known Member

    12,233
    68
    Jun 23, 2004
    Mill Creek, WA
    They're Channel Vision HS2 splitters. Yes, I tried swapping different ones to rule out a bad splitter. And there seemed to a "cliff effect" going on, but only with the HR20-700 .... no problems without the DECAs, no problems with DECAs plus one HS2 splitter, then problems with more than splitter. And, even now with the one 4-way SWM splitter and one 2-way SWM spliiter, the HR20-700 shows slightly lower signals than before, with Tuner 2 slightly lower still. While the HR20-100 connected through the same splitters shows no degradation at all.
     
  14. Davenlr

    Davenlr Geek til I die

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    Sep 16, 2006
    After monitoring for 4 days, my KU signals remain exactly the same as before DECA install. Ka sats are exactly 1 point lower...No difference.
     
  15. dave29

    dave29 New Member

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    Feb 18, 2007
    Seems to be a common theme, and a good one too:)
     
  16. 69hokie

    69hokie Icon

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    Sep 23, 2006
    After checking for the past day, all signal strengths on all recievers seem to be unaffected by the DECA Cloud's presence. I compared to screenshots I took last weekend and didn't see any meaninful change...maybe a point or two here or there but well within the weeds.
     
  17. hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Jul 28, 2004
    Its nice to see that despite this all being "beta"...everyone is having a positive experience in terms of the signal levels.
     

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