[Amps] Pre-Distortion Linearizer

[Joe Subich, W4TV]

On 5/4/2013 9:37 AM, Colin Lamb wrote:
> The breakthrough may be when one manufacturer begins marketing their
> low end transceiver with a -35 db IMD rather than a -25 db one.  That
> would give a distinct marketing advantage.

The problem is that manufacturers are not going to be able to produce a
"low end transceiver" - at least at the low end price point - that has
all the features demanded by the marketplace.  The technology simply
does not exist to make a broadband (no tune), 100W output amplifier
that runs on 11V (low end of a battery life) and achieve -35 dB in the
final and do it for even 10% more than the current crop of $900 rigs.
Add other requirements like reasonably clean phase noise performance,
acceptable (~80 dB) 2 KHz receive IMD, and acceptable ~100 dB) blocking
dynamic range and it is simply not possible from a cost perspective.

$900 rigs are there for a reason ... that's all that many amateurs will
pay.

73,

     ... Joe, W4TV