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Mic bias selection

Stewart Rolfe
Stewart Rolfe Member
edited June 2018 in FLEX-6000 Signature Series
On my Flex 6300 there is 5v on pin 2 of the front mic connector irrespective of whether the 'BIAS' button on the Transmit is window is selected or not - is this normal?

Answers

  • Jim K4JAF
    Jim K4JAF Member ✭✭
    edited January 2018
    Yes, Pin 2 is +5 volts, bias turns voltage on pin 1.  73 s Jim K4JAF
  • Stewart Rolfe
    Stewart Rolfe Member
    edited May 2015
    Posting this brought up thread on the SSDR category which appears to answer this...sorry for the qrm - must check the frequency before transmitting.

    73,
    Stew, GW0ETF


  • Greg N8GD
    Greg N8GD Member ✭✭
    edited June 2018
    Actually, the microphone hot lead is on pin 8, according to other posts from Gerald and Tim, W4TME, not pin 1. The bias of 2.97 VDC would thus be applied to pin 8 when activated via the GUI.
  • Jim K4JAF
    Jim K4JAF Member ✭✭
    edited January 2018

    Yes pin 8 is correct Mic pin.  Yaesu (Flex) uses pin 8 not 1. 

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