[Elecraft] FTDX5000 Design Flaw

[Bob Cunnings]

The FTDX500 wouldn't be the only one, if a -130 dBc composite noise
number defines failure. If you have access to QST reviews, compare:

Flex 5000
FT-2000
Orion II
IC-7700
K3

all of which plot tx composite noise at 100 or 200 W out to 1 Mhz. You
can draw your own conclusions, but the FTDX5000 apparently isn't
exceptional in that regard.  The Flex is no better than -120 dBc out
to 1 MHz, the FT-2000 is slightly worse than the FTDX-5000, and the
Orion II is no better than -130 dBc out to 100 kHz. The Icom rigs seem
to do a little better. The K3 performance indeed far surpasses the
others. I could find no comment on these numbers in the reviews.

Bob NW8L

> Why is this not sent to the Editor and Technical Editor or QST as
> well as the lead test engineer at the ARRL lab?  What was their
> response?
>
> If the radio's transmitted phase noise is that bad, Yaesu should be
> forced to recall all units currently in the field.
>
>
> 73,
>
>    ... Joe, W4TV
>