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Thread: Testing out a 1 Meter “C” band dish.

  1. #16
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    It slides onto the LNB real nice, I used electrical tape to hold it in place till I can tweak it in, but it looks like the "C" band LNB I have is FUBAR, I guess this will have to wait till my Xmas present gets here.

    We use to use silver plated brass sheets to make up wave guides, RF shields and other stuff for the 2 GHz stuff on up, some of the wave guides had to be silver soldered by a certified welder (military stuff) to pass some of the codes and regulations, when we got to the 60 GHz band we had square tubing about 5 millimeters in size to work with, that was fun.

    I wish I still had some of the stuff from the junk trunk at work, this test would have been over and done with, but then what the heck would I do?

    Funny about the salad bowl, I once used a Marie Calender pie tin for a secondary reflector on a 7 GHz setup, (all I had at the time) it worked great, and as far as I know it's still there.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  2. #17
    jvvh5897 Guest

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    I hate to even think of what stuff like that costs now--silver 10x what it once was and even copper is pricey. I was just thinking of using AL foil on plastic PETE from one source or another for something that could take being outside, or maybe go to dollar store and try to find heavy foil baking tray of AL. Last cone I tried was only 4.4 inch diameter at open end and that takes 4.4/2/sin(80/2)=3.4 inch diameter outer radius and should be about the minimum fraction of wavelength needed at the open end of the cone according to Wade. Something that size should be creatively created out of pie tin, or plastic disposable dinner plate and AL foil.

  3. #18
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    You can get nickle silver sheets here.

    Code:
    http://www.onlinemetals.com/merchant.cfm?pid=12533&step=4&showunits=inches&id=904&top_cat=0
    And it's not that expensive, the nickle silver does tarnish a bit, but you can spray it with a clear lacquer and that stops it, or if its the back side you can paint it to match the dish color.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  4. #19
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    Well it looks like that "C" band LNB I found in the junk trunk is FUBAR, I tried it on a friends BUD and got nothing out of it.

    So project 2011613-1A is on hold.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  5. #20
    xilbus Guest

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    fridge has the 421 lnb on special like 14$ its a really good one. Im using it at the moment with great results

  6. #21
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    OK this projo is back up and running* (but not receiving) now I need info from those that have it working, what I need is the focal point distance used on the 1 meter dish to the front of the "C" band LNB, I have tried several spots, one was where the linear "Ku" worked on 87W, I get zip on the "C" band TP's on 87W. Trying on TP 4000 the NASA channels.

    So some type of spacing info is needed to start off with.


    *Thanks big time to our illustrious Costactc, thanks bud I owe you a couple drinks.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  7. #22
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    Bump bump.......No one???????
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  8. #23
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    Wish I could help you out bud but the smallest dish I've ever used for c band was my 6' solid and it's 22" on that dish.







  9. #24
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    Yah I need to know as I tried it at the "Ku" focal point and got zip..

    Hey can you look at 87W and give me an idea of a good and strong "C" band TP on that bird, that may help a bit.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  10. #25
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    Quote Originally Posted by Terryl View Post
    Yah I need to know as I tried it at the "Ku" focal point and got zip..

    Hey can you look at 87W and give me an idea of a good and strong "C" band TP on that bird, that may help a bit.
    Try the Nasa tp, always comes in with great signal quality:

    4000 H 28111
    fec: 3/4







  11. #26
    jvvh5897 Guest

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    I"ve never been able to get 87 on my 1 M dish. I would try 99 4000H and 3820V (strongest for me on 99), or 107.2 4060V first. I know they are doable, but don't think 87 is--lyngsat shows it as at least 1dB down from 99 and that is too much lower signal.

    On my 1M dish the C band LNB ends up pretty much where the Ku band LNB does (24 inch f on 40 by 43 inch Primestar 22.5 degree offset--pretty much a scaled up 18 inch prov offset dish)--maybe a little closer to the dish to get to the right place in the entrance of the waveguide. The same spot works for flat scaler as for the conical scaler. I did have to do lots of playing with the dish and LNB position and scaler before what I have sort of works, but there are TPs that I simply can not get signal on, some that seem to give signal but get nothing on a scan, and some that work part of the time but if I leave the dish alone come back (I figure a TP goes active on another sat and my bit error rate goes up too high until that signal goes away). I have a Ku band LNB next to the C band one so that I can point the dish where I need it for C band--I use 89 degrees and the ABC Now mux for 99 degrees on the C band. I did try pointing the dish to 97 degrees with Ku band at standard spot to get me close to the 99 degree point first. You might want to use another sat at Ku for you dish depending on what you want to do--109 DN circular is a good one to use, nice and strong even with angled shot.
    Last edited by jvvh5897; 08-16-2011 at 06:55 PM.

  12. #27
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
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    Hummmm maybe that is my problem, 87 being a bit too low in power for me to pick up, I will try for 91W as a proof of concept as it showes at 40 to 43 at my location, I can also sight in on Nimiq 1.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  13. #28
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    Quote Originally Posted by costactc View Post
    Try the Nasa tp, always comes in with great signal quality:

    4000 H 28111
    fec: 3/4
    Thats what I've been looking for, and the channel I want.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

  14. #29
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    Galaxy 17 would be a good bet Terryl, I've heard others having minimal success with a 1m dish. Maybe try Spotsnet California tp:

    3840 H 29270







  15. #30
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Gift received at 12-23-2012, 09:06 AM from ICEMAN
Message: thank you budTVCoffee makerPinkfloydthe travel gnomeTractor

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    SUCCESS!!!!!

    On 91W TP 4014H, the only one I can get, I tried all the others and get zip, but now its too hot outside to work on this, I will move the small 9" TV and the CS5000 out to the workbench and try the others when it gets dark and cooler, this way I can tweak the LNB and dish without running back into the shade to look at the signals.



    C band 91W.jpg

    As you can see the "Q" is very low, I will have to play later tonight with the LNB.

    And one little secret that I will tell you all later if I get it tweaked in any better.
    ♫♫♫ I’m a lumberjack and I’m OK ♫♫♫ I drink all night and sleep all day. ♫♫♫



    Coming soon to a crop circle near you.....

    There is a 66 and third % chance that I'm on the right planet...

    "I'm happier then a Jackalope in a balloon factory"

    "First rule of testing satellites"
    "If its working fine now, then don't mess with it"

    "Second rule of testing satellites"
    "If you did mess with it, and now it doesn't work, can you blame someone else?"

    "Third rule of testing satellites"
    "If you did mess with it, and it doesn't work now, and you can't blame someone else"
    "Can you HIDE it"?

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