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Avanti Moonraker 6 new in box

Discussion in 'CB Antennas' started by 6meter, Dec 16, 2014.

  1. 6meter

    6meter Well-Known Member

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    This is not my listing. But I thought it was interesting to see that someone held onto a Moonrake 6 all these years.

    http://desmoines.craigslist.org/ele/4791371863.html


     

  2. mb91w126

    mb91w126 Active Member

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    exitthirteen here you go
     
  3. jazzsinger

    jazzsinger Bullshit Buster

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    The antenna I always wanted. :)
     
  4. ghutch

    ghutch Active Member

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    These are well built, strong antennas....I had a 4 element Moonraker in the 70s. The four was a large antenna....the 6 is even larger.....I don't remember the boom length on either antenna? I think the 4 was about 14 feet? Fiberglas spreaders on the reflector .... Change all to Fiberglas and have a 6 element quad? This would be a fun project for the right guy...a DX magnet
    I remember the tubing being high quality aircraft grade, all ss fasteners, hubs were very strong....might find an other set of hubs and make two from one ?? The boom was 2 PC on the four element. That rotator is not large enough to use on a antenna this size in my opinion. This would be great on 10 meters.....CQ SSB contest 10 meters anyone?
     
  5. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    yeah that rotator is too small. it is rated at 7.5 sq.ft and the Moonraker 6 has a wind loading area of 9 sq.ft. IIRC. It also has a 31-32 foot long boom so it takes lots of rotational torque to start it and especially to hold it in the wind.
     
  6. w9cll

    w9cll W9WDX Amateur Radio Club Member

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    Tailtwister or Ham-V is whats required. Hell when I had my PDL I used an Alliance HD-73 rotator on it.
     
  7. Shockwave

    Shockwave Sr. Member

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    While this antenna does work well and it is a valuable classic, the still in production Laser 400 equals its performance and surpasses it in mechanical construction. I have to disagree with the poster who said the hubs are strong. I see them as the weakest link in the antenna. If you've put a few together you begin to struggle with deciding to make the bolt tight and break the brittle cast aluminum hub or don't tighten them enough so the first good wind knocks all the elements out of alignment. This has been so problematic over the years that I've seen every attempt to prevent it from pining the hubs to the boom to jamming the tabs from beer cans between the hub and the boom.
     
    Ranch55 and Captain Kilowatt like this.
  8. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    Yeah I just read that and thought the same thing about the hubs. They were a bad idea on an otherwise good antenna. I can't recall how many reports of broken hubs or rotated elements I have heard/seen over the years.
     
    Ranch55 and TIN_CAN like this.
  9. BADBONES

    BADBONES Member

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    I RECENTLY ACQUIRED A MOONRAKER 6 IN THE BOX AND I'M LOOKING AT MY INSTRUCTION BOOK WHERE IT SAYS IT HAS 3 BOOM PIECES TOTALING ABOUT 33' 6" APART SO I'M GUESSING AROUND 33' TOTAL OR SLIGHTLY MORE. I'M PUTTING MINE UP 40 FT ON A HILL IN WEST VIRGINIA USA SOMETIMES THIS SPRING I HOPE! I TOO HAD A MOONRAKER 4 IN THE 90S AND TALKED FROM NEW LERSEY TO BRYANSK RUSSIA WHICH WAS OUTSTANDING!!
     
    S&W357 likes this.
  10. 357magnum

    357magnum Sr. Member

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    Yup , had a MR-6 in the 80's & replaced the hubs , also set the rotor in side the Tri-Pod & put a bearing above it to help reduce stress . It didn't like Hurricanes ! Not smart enough to take it down back then ( besides what a PIA ) & that big kite was gone !:whistle: It was a great antenna while it lasted !
     
    CB590 and S&W357 like this.
  11. BADBONES

    BADBONES Member

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    MY QUESTION IS, HOW DO I ADJUST THIS TO 10 METERS NOT 11 METERS? IS IT JUST IN THE GAMMA RODS OR DO THE ELEMENTS HAVE TO BE SHORTER?
     
  12. BADBONES

    BADBONES Member

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    HOW DO I TUNE IT FOR 10 METERS? ADJUST THE GAMMA RODS OR DO I HAVE TO SHORTEN THE ELEMENTS TOO?
     
  13. 357magnum

    357magnum Sr. Member

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    BadB , Out of my league ! A few on here might be able to tell you . My first thought is , send Marconi on this forum a PM . He might be able to help , just in case he doesn't see this thread .:) 73 & God Bless , Leo
     
  14. RT431

    RT431 In the swamp

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    There are some online calculators that will help you. Google is your friend. :)
     
    357magnum likes this.
  15. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    The elements would need to be shorter to be resonant at a higher frequency. You might be able to make it work with just the gamma but that doesn't fix your problem, it would just make the swr tolerable for the radio. But there is more to it than just swr when it comes to changing bands. We can probably help you with the calculation, but we will need to know what frequency you want to tune to exactly. This will set the middle of your range so you will be good above and below this point for a certain amount. Maybe someone more knowledgeable can elaborate.
    Chris
     

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