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Antenna Question

Discussion in 'CB Radio Forum' started by amtraktrekker, May 15, 2017.

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  1. May 15, 2017 #1
    amtraktrekker

    amtraktrekker Bobtail Member

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    I am an amateur radio operator and have two two-meter antennas mounted on the bed wall on either side of the bed tied to the tool box. How close can I mount a CB antenna to these two antennas without experiencing interferance or loss of signal? I'm running out of room and ideas as to where I can mount the antenna. Thanks for your help.
     
    amtraktrekker, May 15, 2017
    amtraktrekker, May 15, 2017
    #1
    wolverine11 Thanks this.
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  3. May 15, 2017 #2
    rabbiporkchop

    rabbiporkchop Road Train Member

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    90% of your signal will be lost by mounting your CB antenna on the front edge of your truck bed even if those two other antennas weren't even there.
    I'm not sure how much more loss would be incurred due to the proximity of those other two antennas
     
    rabbiporkchop, May 15, 2017
    rabbiporkchop, May 15, 2017
    #2
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  4. May 15, 2017 #3
    CW Spook

    CW Spook Light Load Member

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    How about trying a mag-mount on the cab roof, or something like a Husrler HQ-27 on a hood lip mount?
     
    CW Spook, May 15, 2017
    CW Spook, May 15, 2017
    #3
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  5. May 16, 2017 #4
    mike5511

    mike5511 Road Train Member

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    I'd try this. antenna.jpg
     
    mike5511, May 16, 2017
    mike5511, May 16, 2017
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    Crude Truckin', wolverine11, lilillill and 2 others Thank this.
  7. May 19, 2017 #5
    amtraktrekker

    amtraktrekker Bobtail Member

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    Looks like you could flush the toilet on the space station with that setup!
     
    amtraktrekker, May 19, 2017
    amtraktrekker, May 19, 2017
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  8. May 20, 2017 #6
    rabbiporkchop

    rabbiporkchop Road Train Member

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    I kind of like this setup.
     
    rabbiporkchop, May 20, 2017
    rabbiporkchop, May 20, 2017
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  9. May 20, 2017 #7
    Ridgeline

    Ridgeline Road Train Member

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    Now for an answer.

    So you should be able to put it right into the center of the box,, you won't have an issue.

    You won't have interference but what you may see the 2m antenna become a little directional if anything but I doubt that you will notice it.
     
    Ridgeline, May 20, 2017
    Ridgeline, May 20, 2017
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    rabbiporkchop and wolverine11 Thank this.
  10. May 20, 2017 #8
    CW Spook

    CW Spook Light Load Member

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    Jan 23, 2017
    In the middle of the Iowa corn and soybean fields.
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    I'd mostly agree with all of that. I would not expect any interference from the antennas themselves, but having the CB antenna partially blocked by the metal cab of the truck may hurt the performance a bit, at least in comparison with a roof mounted antenna. Using a top loaded fiberglass whip will ameliorate that to some extent.
     
    CW Spook, May 20, 2017
    CW Spook, May 20, 2017
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  11. May 20, 2017 #10
    amtraktrekker

    amtraktrekker Bobtail Member

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    Sep 5, 2012
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    Ridgeline, Spook,

    I've got the antenna mounted now, between the 2-meter antennas. I grounded the antenna to the stainless steel mount I fabricated and screwed to the bed. The radio, a Cobra75 WX ST, shows a full signal on the receive side of the meter on all forty channels. Should the receive meter be pegged on all channels? It's been thirty years since I have fooled with a CB radio. I have not picked up anything on the radio as yet, but I understand there's not as much traffic as there once was, despite my living within two miles of an interstate highway. I am avoiding transmitting until I can tune the antenna. Thanks for your help.
     
    amtraktrekker, May 20, 2017
    amtraktrekker, May 20, 2017
    #10
    wolverine11 Thanks this.
  12. May 20, 2017 #10
    rabbiporkchop

    rabbiporkchop Road Train Member

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    Sounds like you might be parked under a power line
     
    rabbiporkchop, May 20, 2017
    rabbiporkchop, May 20, 2017
    #10
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