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Video gate ch6 MMM and Witch Doctor

Discussion in 'General CB Services Discussion' started by Shadetree Mechanic, Dec 3, 2020.

  1. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    Here is a video gate of MMM and Witch Doctor. I think Motor Mouth Maul might be on his new antenna?




     

  2. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    I am interested in why MMM chose the "FM broadcast" antenna over the giant beam he had. I think it is circular polarized, but has very little gain.
     
  3. DXman

    DXman Yes, that's 3100 degrees F. Nine yrs of hard work.

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    I was listening to MMM a couple few days ago and he was saying that the new beam was such a tight beam width (25 degrees) that it was just to much trouble to go out and keep turning the beam by using the ropes (no rotor).
     
  4. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

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    Not to dive into getting people to take sides, when really it's Mother Nature that chooses the side that reflects, or bounces back...

    Referring to Polarization of the wave...
    upload_2020-12-3_17-40-39.png

    You can view it here
    When you want to talk specific to one person or at least work thru the "noise" the band has, you either find a open spot, or run the risks associated with wrong polarity received on the other end - receiver antenna.

    You can't undo what Mother Nature applies naturally to all - so what you can avoid is running the wrong polarity and ANGLE of approach to the reflective layer (E F or otherwise) might as well use an antenna that allows more than one type of polarization when it comes to making the angle of approach successful.

    Circular polarization just gives you the better chance at making contacts - may not be the best, but if you are unable to change the weather (refer this as Ionosphere) you play in, might as well use the best methods you have to get your signal thru that noise by offering a method of allowing your signal to at least work thru in one angle or another of entry and outcome of the polarization being circular can offer you better chances that upon re-entry (Refraction) back to the surface - your angle of polarization can achieve the best approach angle and polarization at the receiving antenna for a contact.
     
    #4 Handy Andy, Dec 3, 2020
    Last edited: Dec 3, 2020
  5. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    I think you may be forgetting that anything sent from a RIGHT hand circular polarized antenna gets reflected as a LEFT hand circular signal.......the exact OPPOSITE of you want. I think you are confusing circular polarization with a dual polarity antenna which receives either vert or horz equally well with only 3 dB loss when off axis. Simple cross polarized yagis will achieve what you want but a helical antenna that produces true circular may or may not be of the proper sense ie left or right hand. They will work as you suggest however as long as only ONE station is using it. If two stations are using it and are of mismatched polarity then the signal degradation is in excess of 25 dB.
     
    Shadetree Mechanic likes this.
  6. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

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    No, I wouldn't call it confusing, much to the opposite, your clarification helps.

    It has been said,...

    "... In some ways, using power - we CB'ers seems we can generate our own Skip..."
    -CB Doctor (CB Tricks)

    (whether to be proven or not - the post simply makes light of an event that we have no control over whatsoever.)

    The post was made, unfortunately - both the Poster, and the Site it was left on, both are no longer here...​

    We still look for the "voltage component" of the wave, out of all that noise. Observationally, with the ionosphere being the true equalizer, we can have vertical converting to horizontal and horizontal converting to vertical and polarization angles in-between.

    So to be clear, and honest, the post was only pointing out that using "circular" polarization - really any sort of polarization, which allows you to obtain the advantage to be heard in the bounce, versus taking the chance to be heard (using any exorbitant large-huge levels of power in the attempt supplanted in that same polarization included in this effort) on using just one form of polarization - one polarization angle versus transmitting on many gives the radiated signal from the transmitter-side a potential advantage over those that use fixed polarization (refer to the common "vertical") - is where I was trying to take this...
     
    Shadetree Mechanic likes this.
  7. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    Yeah OK but what I said about true circular polarity still holds true. Right hand after a reflection is left hand and is not compatible with the original polarization. EME operators have known this for decades. The only difference is using the moon as a reflector instead of the ionosphere. Simple crossed yagis will never be more than 3dB down from maximum and that is when the signal is rotated 45 degrees off axis from either antenna. Using circular on one end to a single plane antenna on the other end can yield rapid flutter as polarity shifts whereas to crossed yagis the signal will never fade more than 3dB due to polarity shift.
     
  8. DoctorAudio

    DoctorAudio Active Member

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    I knew a guy in the late 80's that put a small splitter toroid (like in a 4 pill amp) into a metal project box with three so-239's. He ran two identical 10 tube Phantoms into his Moonraker 4, one on each polarity with equal length coaxes. He also used one of those little Galaxy 30 amps to drive the two phantoms a little harder.. He had guys in DX all the time stating he was lying about where he was and that he must be local to them as he wasn't fading much or getting that phase distortion sound in their receive that you typically hear during a deep fade.
     
    Shadetree Mechanic likes this.
  9. Mustang 131

    Mustang 131 Sr. Member

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    He was much harder to beat on dx using his yagi. The circular polarized antenna a great feat of engineering. But in my opinion, lousy for a pile up.
     
  10. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    I thought about using a pair of the RM KL203 amps on a pair of mirror mount antennas. The 203 are so cheap, it would be fun to play with. Now you are giving me more ideas. Haha!
     
  11. DoctorAudio

    DoctorAudio Active Member

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    One thing about using 2 amps is the power to each antenna isn't cut in half.

    The guy I was talking about was already using both amps on his beam. He was using a regular T connector. I suggested using a splitter and made it for him. It seemed to work a lot better than it did with the T.
     
    Shadetree Mechanic likes this.
  12. DoctorAudio

    DoctorAudio Active Member

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    Back in the day, Brass (I sure miss him) ran 9 towers, 9 antennas and 9 amps. His station was unstoppable and one of my inspirations,
     
    #12 DoctorAudio, Dec 5, 2020
    Last edited: Dec 5, 2020
    Keto and Shadetree Mechanic like this.
  13. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    Wow, I would like to see that.
     

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