Radio Static During Tx

Discussion in 'Instruments / Avionics / Electrical System' started by Chris In Marshfield, Aug 17, 2018.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Aug 17, 2018 #1

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,205
    Likes Received:
    1,000
    Location:
    Germantown, WI USA
    Washed the plane a couple weekends ago. A few days later, ATC told me that my transmission was very crackly and staticky. Seems to me that maybe some soap and/or water got under the antenna seal and is interfering with the ground plane. Does that sound reasonable? Probably not a bad idea to take the antennas off and clean them and the ground plane up a bit. Cheap first step, I suppose. And then sillycone up the base.
     
  2. Aug 17, 2018 #2

    BBerson

    BBerson

    BBerson

    Well-Known Member HBA Supporter

    Joined:
    Dec 16, 2007
    Messages:
    12,063
    Likes Received:
    2,355
    Location:
    Port Townsend WA
    I don't know about the ground plane, but water in the connector might not help.
     
  3. Aug 17, 2018 #3

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,205
    Likes Received:
    1,000
    Location:
    Germantown, WI USA
    Truth. Don’t know why I didn’t consider that. Duh.

    Reckon I’ll take ‘er apart and see what’s up. I presume most antennae are BNC?
     
  4. Aug 17, 2018 #4

    BBerson

    BBerson

    BBerson

    Well-Known Member HBA Supporter

    Joined:
    Dec 16, 2007
    Messages:
    12,063
    Likes Received:
    2,355
    Location:
    Port Townsend WA
    Yeah. If that doesn't help you can pull the radio out of the rack and clean all the contacts with a new pencil eraser.
    ( guy from Narco told me that trick)
     
    Chris In Marshfield likes this.
  5. Aug 17, 2018 #5

    BJC

    BJC

    BJC

    Well-Known Member

    Joined:
    Oct 7, 2013
    Messages:
    9,573
    Likes Received:
    6,339
    Location:
    97FL, Florida, USA
    My old Cessna A152 had the same problem. The antenna had a balun made from co-ax, and when it got wet it caused lots of static. Made a new balun, sealed the antenna better, and eliminated the static.


    BJC
     

Share This Page



arrow_white