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Re Antenna Tilt

Discussion in 'CB Radio Forum' started by Timin770, Jun 25, 2020.

  1. Jun 25, 2020 #1
    Timin770

    Timin770 Road Train Member

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    This really has nothing to do with CB but every time I see a tilted antenna it reminds me of the conflict between the Cherokee County GA Sheriffs Office and Clayton County GA SO. The FCC granted both agencies permission to use 158.775 as their dispatch freq. I live in Cherokee Co and quite frequently I'd hear Clayton on that freq. One of the directives from the FCC was for Cherokee to tilt its transmitter antenna a few degrees. You can find the full directive on FCC.gov. Easy to Google
     
    Timin770, Jun 25, 2020
    Timin770, Jun 25, 2020
    #1
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  3. Jun 27, 2020 #2
    Meteorgray

    Meteorgray Heavy Load Member

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    Interesting that a small tilt of the antenna would prevent same-frequency conflict.
     
    Meteorgray, Jun 27, 2020
    Meteorgray, Jun 27, 2020
    #2
  4. Jun 27, 2020 #3
    Timin770

    Timin770 Road Train Member

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    I'm puzzled why the FCC would approve the same freq 40 miles apart
     
    Timin770, Jun 27, 2020
    Timin770, Jun 27, 2020
    #3
  5. Jun 28, 2020 #4
    Ridgeline

    Ridgeline Road Train Member

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    Because of the radiation pattern within the area. The same goes for other services.
     
    Ridgeline, Jun 28, 2020
    Ridgeline, Jun 28, 2020
    #4
  7. Jun 28, 2020 #5
    Timin770

    Timin770 Road Train Member

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    Seems like a risk to approve the same freq so close together. In this case they obviously got it wrong and put lives in peril
     
    Timin770, Jun 28, 2020
    Timin770, Jun 28, 2020
    #5
  8. Jun 28, 2020 #6
    Ridgeline

    Ridgeline Road Train Member

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    Not really, there also is a issue with the application from the counties, some have single frequency use for adjacent counties for operational reasons.
     
    Ridgeline, Jun 28, 2020
    Ridgeline, Jun 28, 2020
    #6
  9. Jun 28, 2020 #7
    Timin770

    Timin770 Road Train Member

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    Is it your position that when neighboring police dispatchers accidentally interfere with each other it's "not really" a problem? If that is your position I'll know what I'm dealing with.

    "some have single frequency use for adjacent counties for operational reasons.."

    Not in this case
     
    Timin770, Jun 28, 2020
    Timin770, Jun 28, 2020
    #7
  10. Jul 31, 2020 #8
    drivingmissdaisy

    drivingmissdaisy Road Train Member

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    Yes, someone screwed up. You can't have the same freq used in neighboring parishes (or counties for you weird folks). They're going to step on each other. Tilting antennas does nothing but change the radiation pattern and makes reliable communication impossible. It makes for dead spots. Not good advice.
     
    drivingmissdaisy, Jul 31, 2020
    drivingmissdaisy, Jul 31, 2020
    #8
    Timin770 Thanks this.
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