The incredibly sharp "brick wall" filters of the IF DSP system can reveal
characteristics of incoming signals that you have never heard before,
and not all of them are really pleasant to listen to all the time.Using the
CONTOUR control, you can roll off low-frequency or high-frequency
components to shape the receiver passband differently, or null out part
of the mid-range area.With continuous adjustment throughout the
passband, you may null out interfering or irrelevant frequency components.
The desired frequency components will significantly rise out of the
background noise, improving fidelity and signal-to-noise (S/N) ratio.
For reduction of random noise types, the FT-950 utilizes a powerful
Digital Noise Reduction filter, that contains fifteen different noise
analysis parameters specially created after thousands of hours of on-
the-air testing.You may choose any of these parameters to effectively
reduce most noise under nearly any given conditions.
!
The YAESU DSP digital modulation technique not only provides an
analog-sounding high-quality digital SSB modulation envelope, but
also allows the transmission bandwidth to be adjusted by the operator.
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Selecting the NOTCH function with the SELECT dial will enable the
FT-950's very high "Q" IF Notch Filter, producing a deep notching effect
typically in excess of 70 dB.Using the Menu mode to choose the "digital"
NOTCH function, a uniquely designed DSP Auto Notch (DNF) filter
can also be engaged.Independently from the "manual" Notch function,
the Auto Notch (DNF) can reduce multiple carriers within the passband.
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The Secret of superior performance of the FT
DX
9000/FT-2000 Series
on the lower bands is the RF µ-Tuning system.This same system is now
available as an option for the FT-950!
On the lower Amateur bands, the signal voltages impinging on a receiver
can create noise and intermodulation effects that can cover up weak
signals you're trying to pull through.Three modules (MTU-160, MTU-
80/40, and MTU-30/20) are available Ð these modules may be connected
externally with no internal modification required!
The RF µ-Tuning filters utilize a stack of large 1.1" (28 mm) Ni-Zn
Ferrite cores, driven through a silver-plated coil assembly by a precision
stepper motor.The resulting high Q (typically over 300) provides a very
steep resonance peak near your operating frequency.(On the 160 m
band, typically -3 dB@±12 kHz, -30 dB@±450 kHz.) And the 3rd order
Intercept Point (IP3) is increased by 4 dB with the RF µ-Tuning system.
The ferrite cores utilized in the µ-Tune filters are driven by a high-
resolution, high torque stepper motor (4-phase unipolar motor/2-phase
magnetization system) with angular resolution of 1.8deg, and the
synchro belt drive has an estimated lifetime of more than 10,000 hours
of actual operation.For 160-meter operation, the ferrite core diameter is
2.2" (55 mm)! The RF µ-Tune system tracks your operating frequency,
although you can manually skew the frequency response when special
interference conditions require it.
If you turn the RF µ-Tune system off when leaving your frequency or
QSYing to other bands, the RF µ-Tune system will be re-centering the
µ-Tune filter on your current operating frequency when the µ-Tune is
re-engaged.
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9000/FT-2000/FT-950 on the lower bands
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Содержание FT-950
Страница 1: ...FT 950...
