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Best low cost intro beam

Discussion in 'CB Antennas' started by lonestarbandit, May 27, 2021.

  1. dave457

    dave457 Sr. Member

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    Why does most people than run straight 4 transistors amps push them well past saturation point?? 800-1k.. In my book is not good for the amp. Run them within manufacture specs not what the builder says it can do.
    Just my two cents


     

  2. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    Don't know. Why did people back in the day push their PDX and Phantom sweep tubers to over 1kw? Human nature I suppose. Like I say I run mine at half the builders recommended max drive and get good numbers (500-800 pep depends AM, SSB and mic used.) Now just need to add that to a beam and exponentially increase my directed "clean" power (Hammers dont start with me I know class B bias isn't "clean" in your world but in 11m it does the job)
     
    #62 lonestarbandit, Jun 6, 2021
    Last edited: Jun 6, 2021
    groundwire likes this.
  3. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    The Sirio 4 element is rated for 1000 watts continuous and 3000 watts for a "short time". It says "short time" in the manual, what ever that means. I don't plan on running more than about 600 to 800 watts peak, so its fine for what I am doing for now. This will probably be just a practice antenna for me any way, I cant seem to get the idea of a Maco 7 element out of my head. As far as the advertised gain, I believe it is just a guide line to compare antennas of the same manufacturer. Otherwise the numbers are made to make the antenna sell better. I bought a Tail Twister rotor used from a local, hopefully the last one I will ever need to buy.

    As far as the rotor goes, the Channel Master that everyone used is no longer made as you know. I got lucky a few months ago and found an Amazon seller that had a bunch of the Radio Shack Channel Masters new old stock for almost $200. I bought one to replace the Channel Master on my TV antenna that finally broke inside, after 15 years. That's with an antenna that it was designed for and we don't live in a windy area either. The RCA rotator that you can get now days, is made for a small digital TV antenna and would probably not last long with any thing bigger. Would it work with a V Quad? Probably. For how long? It would work right up to the point that it doesn't. I would suggest spending a little extra for a good rotator, that way you wont have to buy twice.

    Chris
     
    lonestarbandit likes this.
  4. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    Yeah, you got a good rotor lol.
    Trouble is it isn't a little more than the RCA, it's a lot more. Around here people are mighty proud of used slightly dodgy gear.
    I saw a poor looking tailtwister something myself used, they wanted 300 for it and the control. I am leaning towards the Vquad purely on the light weight of 8 pounds.
    I am also watching estate sales etc hoping to snipe a deal on a real (old) rotor. That RCA scares me. I found "stats" for it but I don't believe them. Supposedly:

    50 lb max at 6 inch away from the rotation axle. The max torque is 300 lbs/in.

    I think if someone put 50 pounds on that RCA it would move. Once. To launch your antenna to the ground.

    Congrats on the tailtwister and channelmaster.

    And don't aid me in my beam sickness lol I must not be waylaid by 7 element dreams I need small but effective

    Looking forward on hearing your Siro results.
    I have seen 2 sets of specs for the Siro and one set said 1000 pep max vs the manufacture claim of 3000 peak. Sadly for me I think that Siro is too big for my application in residential area. Even the Vquad might get unwanted attention ...
     
    #64 lonestarbandit, Jun 6, 2021
    Last edited: Jun 6, 2021
    Shadetree Mechanic likes this.
  5. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    I would really love to use one of these control boxes so sexy 1960s lol
     

    Attached Files:

    S&W357 likes this.
  6. Sorin Schiop

    Sorin Schiop Member

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    In Italy a new antenna came out :
    Grazioli FE10V FE10V-render-vertical-rotated-1.png bobina-render-vertical.png
     
  7. dave457

    dave457 Sr. Member

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    Those are nice looking antennas but the shipping kills the deal unless there is a us distributor
     
    undertaker and Dmans like this.
  8. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    Decided to order a maco V quad. Will see how it goes once all the required bits are acquired.
     
    S&W357 and Shadetree Mechanic like this.
  9. Robb

    Robb Yup

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    Very true.
    So, another solution is to run two antennas. One horizontal beam for skip and a vertical antenna for local ops. An antenna switch makes it possible to switch between the two. Running a horizontal beam has many added perks. One is that many signals reaching the beam are either vertically, horizontally, or circularly polarized. But if you already have a vertical; then adding a horizontally polarized antenna will literally hear stations that a vertical antenna cannot pick up nearly as well. The next perk is that a horizontally polarized antenna rejects man made noise and interference, making the incoming signal much brighter and clearer. Been there; done that . . .
     
  10. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    Thats the plan...
     
    Slowmover likes this.
  11. SIX-SHOOTER

    SIX-SHOOTER Sr. Member

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    Whatever works for you.I'd go with what I said above.73

    SIX-SHOOTER
     
    barefootindian likes this.
  12. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    For those interested heres the guts of that chinesium RCA rotor. I tore it apart to add lithium grease and loctite to the motor screws to address its two most common points of failure shown on Amazon reviews. Happily I can report the gears and the pinion gear are both metal. There were some reports they were plastic. At least in my case they are not. Put it all back together but havent recalibrated or hooked up wires yet to control unit. The Maco V Quad is back ordered and working with a forum member here to get a push up pole so I am not in a rush. The housing materials are quite light and believe it to be made from a low grade cast aluminum if I had to guess.
     

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    #72 lonestarbandit, Jun 12, 2021
    Last edited: Jun 12, 2021
  13. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    Thanks for the report on the metal gears, maybe there is hope for this little guy.
     
  14. lonestarbandit

    lonestarbandit 4-2-9 Central TX

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    Seems a little long in keyup but its liveable without irritation but I did have to get used to it.
     
  15. Crawdad

    Crawdad Down in the mud invasive species

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    Homer is absolutely right. Anyone who wants to homebrew a beam should try one.

    73
     
    HomerBB likes this.

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