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Recent content by DavidD

  1. D

    HR2510,

    assuming mic element is bad as audio applied to the mic voice input pins shows modulation on all bands now.
  2. D

    HR2510,

    applied the tone to the mic input pins and got modulation on the internal meter on all selections, on the output RF appeared to be modulated.
  3. D

    HR2510,

    applied tone but just week output. Put tone directly onto the mic input leads and got mod reading on the internal radio meter and onthe output
  4. D

    HR2510,

    hard to read my schematic but applied a 1kh tone at R85 which I think connects to IC104 pin2. Heard a very, very faint 1k tone in the speaker but did not see any modulation in the output
  5. D

    HR2510,

    DID, GOT WEAK AUDIO OUT OF SPEAKER, NO MODULATION
  6. D

    HR2510,

    WEAK AUDIO IN THE SPEAKER, NO MODULATION OF CARRIER
  7. D

    HR2510,

    hard to read my schematic but applied a 1kh tone at R85 which I think connects to IC104 pin2. Heard a very, very faint 1k tone in the speaker but did not see any modulation in the output
  8. D

    HR2510,

    Carrier on FM, AM, CW but no modulation on voice on any band, FM,AM,LSB,USB? Checked mic, seems okay, Power out good, just no modulation on voice tx.
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