In article ,
Wayne.B wrote:

On Mon, 07 Feb 2005 19:40:33 GMT, Bruce in Alaska
wrote:

This has absolulty nothing to do with the IMD Spec for Type Acceptance.
IMD is not Frequency Stability.

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Bruce, does the IMD spec speak to audio clarity, off channel
interference or both?


IMD = Intermodulation Distortion
A Spec for Transmitters, and it is a very HARD Spec to design for, and
PROVE, via Type Acceptance Testing for General Coverage (1.8 - 30 Mhz)
transmitters. There is a significant variation in parts used in the
post Power Amplifier Filtering Systems, of these radios, and to get
the required IMD Spec, for all these various filters and bands, for
all the production radios isn't an easy trick, especially for the radios
that you MUST submit to the FCC Lab for Type Acceptance.


Bruce in alaska
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