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Astatic Vs Uniden

Discussion in 'CB Radio Forum' started by CalD, May 27, 2022.

  1. May 27, 2022 #1
    CalD

    CalD Bobtail Member

    1
    1
    May 27, 2022
    0
    I have a new Uniden Bearcat 980SSB. It is in my basement. I am running it out to K-40 Mag mount antenna that sits outside my basement window. I placed it on two over lapping large round cookie sheets for its steel base. These round steel sheet sit directly on the ground.

    The reading on my internal bear cat SWR are as follows
    Ch 1: 2.1
    Ch 20. 1.2
    Ch 40: 1.00

    However, on may Astatic PDC1 external SWR meter, my readings are:
    Ch 1: 2.2
    Ch 20. 1.8
    Ch 40: 1.5

    I'm not sure why there is a slight difference. Are these readings okay, given the set up I've described?

    Thank-you
     
    CalD, May 27, 2022
    CalD, May 27, 2022
    #1
    Another Canadian driver Thanks this.
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  3. May 27, 2022 #2
    Ridgeline

    Ridgeline Road Train Member

    20,737
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    Dec 18, 2011
    Michigan
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    Your external meter is more accurate and anything under 2:1 is acceptable, especially in the configuration you have it.
     
    Ridgeline, May 27, 2022
    Ridgeline, May 27, 2022
    #2
    jessejamesdallas and Another Canadian driver Thank this.
  4. Oct 27, 2022 #3
    HogazWild

    HogazWild Light Load Member

    196
    189
    May 18, 2022
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    Calculate power loss of a oscilloscope or spectrum analyzer if you want to see which is more accurate. I bet both are off
     
    HogazWild, Oct 27, 2022
    HogazWild, Oct 27, 2022
    #3
  5. Oct 29, 2022 #4
    jessejamesdallas

    jessejamesdallas Road Train Member

    1,415
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    Oct 3, 2008
    Republic of Texas
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    Either way...SWR is probably just fine...But a K40 magnet mount antenna on a cookie sheet, sitting on the ground is not going to get you much distance regardless of what the SWR meters are reading..
     
    jessejamesdallas, Oct 29, 2022
    jessejamesdallas, Oct 29, 2022
    #4
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