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Thread: SWR question (Bad swr on higher power only) 2 meter

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  1. #1
    Join Date
    Sep 2003
    Location
    Glendora, CA
    Posts
    138

    Default SWR question (Bad swr on higher power only) 2 meter

    Hi, I have a copper J-pole on the roof of my house. My swr on 146.520Mhz FM is as follows:

    1/2 watt = between 1.0:1 and 1.1:1
    9 watts = 1.2:1
    130 watts = 2.5:1
    160 watts = 4.5:1

    Why would it be so good on low power and bad on high power?

    P.S. I am running RG8-X (mini-8) coax. (about 60')

    Thanks,
    73's

  2. #2

    Default

    Sounds like a problem with the SWR meter. What are you using for that?
    What if soy milk is just regular milk introducing itself in Spanish?

  3. #3
    Join Date
    Sep 2003
    Location
    Glendora, CA
    Posts
    138

    Default

    NCG 3000 (Same as MFJ-873 Grandmaster).

    http://www.eham.net/reviews/detail/4318

  4. #4
    Join Date
    Sep 2003
    Location
    Glendora, CA
    Posts
    138

    Default

    My bad, I didnt re-calibrate meter when I switched to high power. I guess I need to CAL if I want to check different power levels... So at 130 Watts its 1.3:1

  5. #5

    Default

    Quote Originally Posted by KE6DJX View Post
    My bad, I didnt re-calibrate meter when I switched to high power. I guess I need to CAL if I want to check different power levels... So at 130 Watts its 1.3:1
    Yep. You need to CAL any time you change power at all, and usually also if you change frequencies or change antennas.
    What if soy milk is just regular milk introducing itself in Spanish?

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