Yaesu FT-897D
All band, all mode 10-100 watts transceiver
- Description
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Description
The FT-897D is a rugged, innovative, multiband, multimode
portable transceiver for the amateur radio HF/VHF/UHF bands. Providing
coverage of the 160-10 meter bands plus the 6 m, 2m, and 70cm bands.
It
includes operation on the SSB, CW, AM, FM, and Digital modes, and
it's capable of 20-Watt portable operation using internal batteries, or
up to 100 Watts when using an external 13.8-volt DC power source.
Measuring
just 7.9" x 3.2" x 9.1" (without knobs), the FT-897 is unmatched in
performance versus size. With the optional FC-30 Automatic Antenna
Tuner installed, the convenient sturdy carrying handle of the FT-897
lets you easily transport your HF/VHF/UHF station to a portable location
and get on the air instantly
Ease of operation of the
FT-897 is enhanced by the large-diameter (1.8") Main Tuning Dial,similar
in size to the tuning knob of a large base station transceiver.
Selectable
tuning steps of 2 kHz/4 kHz per revolution ensure that fine tuning
is always available, while allowing easy navigation around your
favourite bands
The rugged aluminum die-cast chassis
provides a solid foundation for the heat sink for the power amplifier,
with a total of almost 40 cubic inches of heat sink surface area
available. With its quiet, thermostatically-controlled twin cooling
fans, the FT-897 will stand up to the rigors of DX-pedition or home
contest use, with dissipation capability to spare.
When you've
travelled a great distance to find that ultimate quiet operating
location, you want a great receiver so as to take advantage of it !
Yaesu's top receiver design team crafted the front end of the FT-897,
accounting for the dramatic differences between low bands like 160
meters and the 430 MHz microwave band. Wide dynamic range and low noise
low noise figure are the product of the advanced preamplifier stage with
negative feedback for stability, and the GaAs balanced mixer design,
with careful gain distribution from the RF through the audio stages.
Flexibility
in strong-signal operation is also provided by the RF Gain control,
input attenuator, input preamplifier bypass capability (IPO), and
Slow/Fast/Off AGC selections
The quiet, fast-acting local oscillator
system of the FT-897 borrows extensively from the renowned FT-847, using
a Direct Digital Synthesizer (DDS) to achieve fast lock times and
silky-smooth tuning in 10 Hz steps. The excellent carrier-to-noise ratio
helps preserve spurious-free dynamic range in a crowded band, and the
smooth tuning leaves you with the feeling you're using an analog VFO.
The
FT-897 includes a wide array of analog and DSP filters to help you dig
out those weak DX signals on a crowded band! One-touch activation of the
DSP filters, plus a convenient "DSP" LED on the front panel, enhance
the ease of using the DSP
DSP BANDPASS FILTER
Separate
DSP Bandpass Filters for Voice and CW augment the analog filters,
yielding a dramatic improvement in signal-to-noise ratio and
interference reduction. For Voice modes, both the low- and high-side
cutoff frequencies are independently adjustable, and for CW you may
choose bandwidths of 240 Hz, 120 Hz, or a razor-sharp 60 Hz
DSP
AUTO-NOTCH FILTER
To reduce interference caused by
annoying carriers within the receiver passband, the DSP Auto-Notch
provides a significant reduction in the interference level. If multiple
carriers are present, the DSP will detect and notch all the carriers
present.
DSP NOISE REDUCTION
The very effective
DSP Noise Reduction filter of the FT-897 is a tremendous operating aid,
greatly reducing background noise without introducing annoying
distortion of the desired signal. Operator fatigue is reduced, while
signal-to-noise ratio is significantly enhanced
IF SHIFT
To
roll off interference using the analog IF filters, the IF Shift
feature varies the frequency of the IF passband across the filter,
removing interference from either the high-frequency or low-frequency
side without varying the pitch of the incoming signal.
IF NOISE
BLANKER
Another noise reduction circuit, in addition to
the DSP Noise Reduction, is the IF Noise Blanker. Noise pulses are
detected early in the receiver, then amplified and used to drive a
carefully-timed gate in the receiver IF that blanks out impulse- type
noise from automotive ignition systems.
Overall, the FT897D
represents excellent value for money, and is one of our favourite
portable/base transceivers.
Downloads
FT-897 User manual (pdf, 2.99 MB)
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