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Voltage decreases when transmitting

Santiago Mejia HI8O
Santiago Mejia HI8O Member ✭✭
Lately when I transmit the voltage reading on my 6300 decreased. Normally it is at 13.5 and when transmit it goes down to 11.5. Any suggestion? 73, Santiago HI8SMX

Answers

  • VE3DZP
    VE3DZP Member ✭✭
    edited February 2020
    Need a heftier power supply if the voltage is dropping and the rig is OK.
  • Johan _ SE3X
    Johan _ SE3X Member ✭✭
    edited April 2020
  • Al_NN4ZZ
    Al_NN4ZZ Member ✭✭✭
    edited February 2020
  • Chris DL5NAM
    Chris DL5NAM Member ✭✭✭
    edited February 2020
    .... and before you do this, measure the voltage direct at power supply connectors if you transmit and you will see your psu is to small :-)

    The last work what you can do is what Johan says.
  • Al_NN4ZZ
    Al_NN4ZZ Member ✭✭✭
    edited February 2020
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited February 2020
  • Dan KG0AQ
    Dan KG0AQ Member ✭✭
    edited February 2020
  • WA2SQQ
    WA2SQQ Member ✭✭
    edited February 2020
    I had this problem. I got my total voltage drop, end to end, down to just .2v Made a new power cord from a flexible 10ga wire, applied a small amount of a conductive silver grease to the power pole connectors and to the internal power fuses. Voltage is measured with the stacks program. Running my power supply at 14v
  • Mike W9OJ
    Mike W9OJ Member ✭✭
    edited February 2020
    I took the cover off my 6300 with the intention of cleaning the fuse connections but it appeared I would have to perform major surgery to extract the 30A green fuse. Is there any easy way to get to that thing that I might have missed?

    73 de Mike W9OJ
  • Neal Pollack, N6YFM
    Neal Pollack, N6YFM Member ✭✭
    edited February 2020
    What is "The Stacks Program" and where do we find it?

    Thanks,

    Neal
  • WA2SQQ
    WA2SQQ Member ✭✭
    edited February 2020
  • Steven WA8Y
    Steven WA8Y Member ✭✭
    edited February 2020
    Use a voltmeter to determine where the voltage drop occurs. While TX into a dummy load; Measure voltage at Power supply. Measure voltage as supply line as it enter the radio (inside the radio). Measure voltage on the input side of the fuse, next measure voltage on the output side of the fuse.
  • Rich McCabe
    Rich McCabe Member ✭✭✭
    edited February 2020

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