Loading ...
Sorry, an error occurred while loading the content.

69546Re: [softrock40] RXTX Ensemble - RX Mixer

Expand Messages
  • Alan
    Oct 26, 2012
      ----- Original Message -----
      Subject: [softrock40] RXTX Ensemble - RX Mixer



      >The previous assembly steps tested correctly. I notice a problem in the
      voltage test from the Ensemble RXTX 06_RX Mixer (QSD). Pins 7 and 9 of
      IC10 (FST3253) did not show any voltage either with the PTT enabled or
      disabled.


      Assuming the other voltages on U10 are correct, you do not list all of them.

      Measure the resistance between ground and pins 7 & 9.
      If low check R55, 58 are mounted correctly. Check C41, 42.
      Check for solder splashes or possibly bad etching of the PCB leaving whiskers to ground on these lines.

      73 Alan G4ZFQ
    • Show all 4 messages in this topic