base coax

Discussion in 'CB Radio Forum' started by Farm Trucker, Sep 30, 2012.

  1. kc0iv

    kc0iv Light Load Member

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    Mar 31, 2010
    Parkville, Mo
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    mike5511 Thanks this.
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  3. MsJamie

    MsJamie Road Train Member

    One thing that's not apparent from the video is that he's using a Weller soldering station, and it's barely adequate (which is why you have to hold it for 20+ seconds). Your Wal-Mart/RadioShack special soldering pencil isn't going to cut it. A 100 watt soldering gun would be a better tool for PL-259s.
     
  4. handlebar

    handlebar Heavy Load Member

    Farmer,
    At the frequency that CB operates on, the amount of loss (figured as a percentage) is so low for adapters and connectors that you'll be OK if you need to splice two pieces of whatever you've got to reach the antenna. Just make sure to use connectors that are installed properly; don't try to do a "solder splice" like you might with a piece of DC wiring in a vehicle, or on a lamp cord in the house, and expect it to work. Radio signals (generally referred to as "RF" for "radio frequency") are AC but at high enough frequencies that the spacing between conductors and even the sizes of the conductors make a difference. That's why some techs prefer not to use PL259-type connectors above a certain frequency, or with certain cable styles.
    RG-8X has much better loss figures than RG-58 for the length you need, and is a lot less expensive than any of the "full-sized" RG-8 cables, like RG8, RG-213, 9913, or LMR-400.
    My suggestion would be to do what hams have been doing for nearly a hundred years: put up what you've got and get on the air. As time goes on, and you're able to save up a little $$, the first thing to upgrade will probably be that feedline.
    And remember the precautions about mounting your dipole; I don't remember if you said if it would be vertical or horizontal. But until you get *something* up in the air, you won't be on the air at all. The sunspot cycle peak won't last forever....
    73,
    Handlebar
     
  5. Voltrucker

    Voltrucker Medium Load Member

    467
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    Sep 24, 2012
    West TN
    0
    The very best base coax is the RG-213.
     
  6. WA4GCH

    WA4GCH Road Train Member

    3,324
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    Aug 12, 2009
    Seminole Florida
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    RG-213 is good coaxand PL-259 connectors are good at CB but when you get to 2 meters this starts to change .... others are better ....
     
  7. mike5511

    mike5511 Road Train Member

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    1,486
    May 15, 2011
    NW Arkansas
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  8. MsJamie

    MsJamie Road Train Member

    Maybe if you're expecting to need to use it to pull start a jeep, but as far as loss is concerned, it's about the worst of the .405" diameter coax types. The current superstar of the RG8-class coax is LMR-400; it has about half the loss of RG-213, uses the same connectors, and is about the same price.

    Thirty years ago, RG-213 was "the best" simply because you could bury it directly. Now, most coax can be.
     
    handlebar Thanks this.
  9. peterbuilt48

    peterbuilt48 Light Load Member

    76
    2
    Jun 11, 2012
    providence,RI
    0
    just make sure that when you splice them together you use two pl-259 connectors and a barrel connector.Don't splice wire to wire because you will loose wire impedence and it will mess up your swr.
     
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