[1000mp] the battle of the front ends ...

[ROBERT EVANS]

Yes..
For example, if you had a ft1000mp, but sold it so you could
upgrade to the mark five you lost five dB in performance.

This means that a station can be seven times weaker and cause
the same distortion. Or, if all the interfering stations were
of similar amplitude, one station will distort the signal
of the desired station in the mark V as much as seven such
stations did with the non-mark V mp.
(This is a rule of thumb description of the effect)

The 5 in mark 5 seems to refer to 5dB degradation in front-end
performance both in IMR and blocking.  Even if it isn't 5dB,
the prospect of upgrading to a radio that has a receiver with
poorer or even worse performance is undesirable.

But, I doubt it isn't true for all frequencies within a band
and probably not true for all bands.  The variation could be
significant enough to swap the relative performance on another
band.

Also, the K2 is ham band only.  While I know the front-end is
designed to be truely robust (and it is), alignment over
a narrow band with a actual measurement ( set-up to resolve
IMD performance ) could push the envelope for a special case.

BCNU DE N2LO~>


Geovincent@aol.com wrote:
> 
> While I find these numbers interesting, my question  is are they
> statistically different enough to make a difference? Particularly the
> difference between these 5 rigs.
> 
> ICOM IC-756 Pro                    104           80
> ICOM IC-775DSP                 104           77
> Ten-Tec Omni 6+                    119           86
> Yaesu FT-1000MP                111           83
> Yaesu FT-1000MP Mark V  106           78
> 
> 73,
> George K3GV
> 
> DX: Long may it live !
> If it isn't LOGic it isn't LOGging !
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