sl3s + 21v pi + frequency sweep from 150mhz to 2150mhz

Discussion in 'DIRECTV General Discussion' started by tdbone1, Jan 21, 2019.

  1. Mar 7, 2019 #241 of 260
    tdbone1

    tdbone1 Member

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    Jan 21, 2019
    ok i think this is it :)
    i have a 2-way splitter hooked up to each swm port with an sdr on each tap.
    [​IMG]
    please double check the info
    if someone wants to edit so all the Ku bands are in a single column it would look better
    in other words the bottom two spectrums need shifted to the right so all the Ku's in picture are in line
    also in the 3rd spectrum (E4000) there is a gap 1100mhz and 1250mhz. this is normal for that sdr
    crap i still think i have it not right because the top two spectrums dont go up to 2200mhz like they do in the bottom.
    think i have to do it one more time with only the E4000 and lime-mini from 200mhz to 2200mhz and leave off the R820T2's
     
    Last edited: Mar 7, 2019
  2. Mar 7, 2019 #242 of 260
    tdbone1

    tdbone1 Member

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    Jan 21, 2019
    so this would allow me to change rhcp and lhcp but not the 22khz tone to activate Ka-low and Ka-High?
     
  3. Mar 8, 2019 #243 of 260
    P Smith

    P Smith Mr. FixAnything

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    - nope, you'll need regulated PS (0-20VDC 1A) or two power bricks 12-14VDC and 16-20VDC (you will switch them to select R/L polarity)
    - Ka-low and Ka-High are active without 22 kHz tone, it would be 99W;
    - to select 103W, you must send 22 kHz tone
     
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  4. Mar 8, 2019 #244 of 260
    slice1900

    slice1900 Well-Known Member

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    No that allows you to power the WB68. The WB68's four inputs are what generate the necessary voltage/tone, so if you have a splitter connected to each you just need to connect to the proper splitter to get what you want. Same as I think you're already doing with the SWM16. The WB68 doesn't give you anything you can't get with the SWM16.
     
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  5. Mar 8, 2019 #245 of 260
    P Smith

    P Smith Mr. FixAnything

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    no Ka !
     
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  6. Mar 8, 2019 #246 of 260
    slice1900

    slice1900 Well-Known Member

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    It works just fine with Ka. You found some old document written before Directv began using Ka for HD.
     
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  7. Mar 8, 2019 #247 of 260
    P Smith

    P Smith Mr. FixAnything

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    Oops ! You're right. Instead of searching in Internet, I should get into my scrap box and search my old files … found original Zinwell WB68 booklet.
     
  8. Mar 8, 2019 #248 of 260
    HoTat2

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    Yeah ...

    That's what the "WB" means in "WB68.

    "Wide Band" indicating a bandwidth wide enough to include the two adjacent Ka L-band block signals along with the single Ku block one.

    Sent from my LM-V405 using Tapatalk
     
  9. Mar 9, 2019 #249 of 260
    P Smith

    P Smith Mr. FixAnything

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    I did say the WB68 switch is better choice for @tdbone1, as it works as a locker, eg if it powered from any output port by 13-19VDC, it will set 13V/18V/22Khz to each input port according to its freq plan; so tdbone1 wouldn't worry about right voltage/polarity/tone at WB68 input(s) - he just need good splitter(s) what will pass DC and 22 kHz tone to LNBF from WB68 and it will allow his SDR to pull all Ku/Ka tpns simply tapping all 4 inputs of the WB68
     
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  10. Mar 9, 2019 #250 of 260
    tdbone1

    tdbone1 Member

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    interesting as the same 4 ports on the swm16 can power Ka and Ku.
    on wb68 same 4 ports only power Ku?
    you would think it would need less ports then 4 since it would only be reversing polarity and not having to enable or disable Ka

    nevermind. just read there is Ka for wb68
     
  11. Mar 9, 2019 #251 of 260
    tdbone1

    tdbone1 Member

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    im not sure if i understand.
    i dont have any plan with directv (yet) not sure if the HR24 i ordered even has an access card.
    i would like to have free OTA in the end but not sure if i can just buy an access card with that or not.
    anyhow i have plenty of power inverters or 29v, 21v, 12v and some that say 12v and are really like 15v :)
    i would like to use the wb68 (especially since the HR24 dont get here for at least another 24hrs) so i would like to compare it to my swm16 and the (4) 2-way splitters i have connected to it right now.
    i can move my sdr from 1 port to another port very easy with my slip-on coax connector.
    i can also monitor all (4) 2 way connections in real time with my 4 sdr's but only 2 of my sdr's can go up to 2200mhz as the other 2 only go upto 17mhhz
    so as it is right now without my hr24 receiver being here what can i gain if i take out my swm16 and put in the wb68?
     
  12. Mar 9, 2019 #252 of 260
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    This has been pretty clear [to me] from the beginning.
    I have NO Idea how you're going to get Over The Air with DirecTV hardware.
    I use a $15 antenna [myself] but YMMV
     
  13. Mar 9, 2019 #253 of 260
    P Smith

    P Smith Mr. FixAnything

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    there are two types: for professionals - BNC connectors, for others - snug connector which need to screw to existing F-connector(I have plenty of both)
     
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  14. Mar 9, 2019 #254 of 260
    HoTat2

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    AFAIK, that's not correct P. Smith ...

    The passive WB68 multiswitch just passes the receiver control voltages or voltage+tone applied to one of the eight output ports to one of the four trunk input ports.

    For instance applying 13v nom. to a single ouput will only be passed to the multiswitch's 99/101w odd tp. trunk input

    Application of only a single control voltage/tone on one of the eight outputs of the multiswitch won't be translated into all four trunk voltages/tone combinations on the inputs.

    Sent from my LM-V405 using Tapatalk
     
  15. Mar 9, 2019 #255 of 260
    P Smith

    P Smith Mr. FixAnything

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    well... the switch will be used for SDR scanning and the SDR will be connect to WB68 four inputs where you could find all signals
    the switch is provide a connection to the four lines with all sats bands to particular output port with particular signaling, while WB68 inputs stay unchanged regardless how many receivers connected and what each is want
     
  16. Mar 9, 2019 #256 of 260
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    "Our memory" of legacy parts seems to have faded "just a bit" over the last decade or so.

    The WB68 isn't like the WB616

    The WB68 "is useful for" reducing loss as they don't work the same as a Wilkinson power divider
     
  17. Mar 9, 2019 #257 of 260
    HoTat2

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    Perhaps ...

    But I really think the OP should just buy a Polarity Locker for the SL-5 legacy LNB.

    Then he won't even have to bother with splitters to tap into the trunk lines or receivers to power the LNB.

    He can simply connect the SDR input directly to any of the four outputs of the PL (ignoring the two for the flexports of course).

    Sent from my LM-V405 using Tapatalk
     
  18. Mar 9, 2019 #258 of 260
    slice1900

    slice1900 Well-Known Member

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    The SWM16 acts as a polarity locker as well, there's no difference between it and the WB68 for what he's doing.
     
  19. Mar 9, 2019 #259 of 260
    tdbone1

    tdbone1 Member

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    hr24, (2) sup-2400's and sl5k (legacy 4 port lnbf) get here tomorrow.
    :)
    from what i been looking at on my limesdr-mini (1GHz and below) is messed up.
    no wonder i been having such a big problem understanding what is going on with how Ka-Low and Ka-High.
    my spectrum was looking totally messed up below 1GHz with the mini. im not sure why.
     
  20. tdbone1

    tdbone1 Member

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    Jan 21, 2019
    just giving an update.
    i wound up using this setup for fast scanning of sky.
    18.3-18.8 GHz (250-750mhz)
    12.2-12.7 GHz (950-1450mhz)
    19.7-20.2 GHz (1650-2150mhz)
    i used 3 rtlsdr dongles in the bottom area of picture and limesdr-mini in top area for overall spectrum.
    one rtlsdr per band above.
    i can perform very fast manual sweeps (moving the dish) and when i notice something in any of the bottom 3 dongles i just stop and wait about 60 seconds and i then get a pretty high resoultion scan from 30mhz to 3530mhz which covers the bands mentioned above and (alot) more.

    this setup is with an i7-4800mq laptop running ubuntu 18.04.2 and all latest updates and tons of PPA's were added
    built some stuff and other stuff used pip3 and other stuff just repos.
    anyhow most of everything is working pretty good.
    i heard something i can do with hydrogen line and the moon and it would be pretty neat to automate making a digital map and location.
    been looking at itty bitty radio telescopes on youtube and pretty neat stuff.
    anyhow this thread can be closed unless anyone has any questions about anything.
    learned quite a bit but had alot of fun with the sl3k, PI21, green slim 8way tap and alot of these SDR's.
    got to mess around with the multi-switches and even the dvr receivers but i think final setup is like in the pic i took with this camera.
    4 SDR and sat dish_3.jpg 4 SDR and sat dish_2.png

    when im moving the sat dish im looking at the laptop lcd and i can see the bottom right rtlsdr (E4000) changing signal strength. it dont show it in video too well.
    anyhow its real time and when there is a signal strength change in any of the rtlsdr dongles (3) at bottom then i just pause for a min and look at the limesdr-mini and it shows a nice graph.

    p.s.
    whats the signals at the 3ghz area?
    they show even when i cover the lnbf.
     
    Last edited: Apr 23, 2019

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