A thread that will never die

Discussion in 'CB Radio Forum' started by Gadfly, Jan 18, 2019.

  1. craig_sez

    craig_sez Road Train Member

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    Bite me!! Lol
     
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  3. GypsyWanderlust

    GypsyWanderlust Medium Load Member

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    So much text in this thread so I’ll keep mine short. The length of coax matters to some extent because the longer the run, the greater the signal loss. The amount lost per foot depends on the type of coax.

    1. Don’t use more than you need
    2. Bigger coax loses less signal
    3. Never loop coax
    4. Each connection/splice will have some loss
    5. Poorly done connections will cause more problems than the above four.

    6. The amount of communication on you CB will increase exponentially as traffic speed decreases to zero.

    Drive Safely
     
  4. craig_sez

    craig_sez Road Train Member

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    Yeap i loose 2-5 db when moveing...Tried it sittin still and movein with a 10k comp with a 20 somethin inch base shaft and a 7ft skip shooter on a 19 crapcadia..Used my analyzer on it just to see one night..
     
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  5. Slowmover1

    Slowmover1 Road Train Member

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    Missed ya. Figured you got stuck in a logic loop and had let go of the wheel. Circling around & around the same six-block area of Elizabethtown, NJ, the last few weeks. What a fate!! Sure glad you finally ran out of fuel!!

    I’ve been dismantling the Portable Base Station to exclusively run the Yaesu ft450d a few weeks (carrying my Uniden backups), just to do my listening on 11-meter; figure out the RX controls.

    Figured I might suffer the same symptoms. Driving in circles, and not notice. I’ll keep the fuel at/under a half-tank from hereon.

    “So, with these numbers, what if I try THIS . . . ?”

    .
     
    Last edited: Feb 1, 2019
  6. Turbo-T

    Turbo-T Road Train Member

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    I only run enough coax to connect the transmitter to the antenna. No more, no less.

    Or if I am running an amp, I only run enough to connect the transmitter to the amp input, and then enough from the amp output to the antenna. Again no more, no less.

    It's not 3 feet, it's not 6 feet, it's not 9 feet, or 12....or 15....or 18....nope. But it works! I have a low 1.2:1 swr.

    Gadfly I'd like to see your videos.
     
  7. Gadfly

    Gadfly Medium Load Member

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    I don't know that I have any. I just installed my equipment, ran just enough feedline to get to the radio, SET the antenna for lowest SWR and @ 50 ohm feedpoint and went to town. I, too, have an average SWR of 1.2x1 thru out the HF spectrum, and that includes some freqs outside the ham spectrum.
     
  8. tucker

    tucker Road Train Member

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    This thread is dieing
     
  9. Slowmover1

    Slowmover1 Road Train Member

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  10. rabbiporkchop

    rabbiporkchop Road Train Member

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    Put a T connector right on the analyzer's test connector. On one side of the T place a good 50 ohm load. On the other side of the T place the coax with far end open. Change the freq to where the SWR is the lowest. This is the freq where the coax is 1/2 wavelength or 180° long. The idea is that the open at the far end is reflected at the T as an open leaving the 50 ohm load the only thing the analyzer sees resulting in the lowest SWR. No math needed.
     
  11. craig_sez

    craig_sez Road Train Member

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    Point.of that is?????
     
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