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Thread: Icom 718 weak receive

  1. #1
    Master Navigator K4PIH's Avatar
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    Icom 718 weak receive

    My Icom 718 took static/lightning hit? Transmit is fine but receive is weak. Maybe gas discharge tube is bad, or other filter board part? How do you check a gas discharge tube?
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  2. #2
    Administrator N8YX's Avatar
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    Sorry for not noticing this before.

    A GDT is not in "series" with the receiver's front end. Rather, it's shunted to ground and will conduct excessive voltage to same when its breakdown threshold occurs.

    I have a 718 plus servicing info. What do you have in the way of test equipment?
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  3. #3
    Master Navigator K4PIH's Avatar
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    Thanks, I have the usual fluke and access to an HP spectrum analyzer and a portable O Scope. Also have a nice shop at home and at work.
    "Don't put it on the plate if you can't eat it!"

  4. #4
    Administrator N8YX's Avatar
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    Quote Originally Posted by K4PIH View Post
    Thanks, I have the usual fluke and access to an HP spectrum analyzer and a portable O Scope. Also have a nice shop at home and at work.
    Any sort of RF generator?
    "Everyone wants to be an AM Gangsta until it's time to start doing AM Gangsta shit."

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