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The Yaesu FT-847 Earth Station: A masterpiece of high-tech design and packaging know-how!
Utilizing the latest computer-aided design techniques and thousand of "chip" components. Yaesu's engineers have achieved an engineering breakthrough that was only a dream just a few years ago: a full-power transceiver covering HF, 50 MHz, 144 MHz, and 430 MHz bands in a package about 2/3 the size of an average briefcase. Ready for action on SSB, CW, AM, FM, and digital modes, the FT-847's ultra-compact size makes it ideal for serious base stations use, and well as a variety of portable and mobile applications, including Field Day, DX-peditions, VHF/UHF "Rove" operation, and RV installations. And long-term reliability is ensured by the rugged construction, featuring an aluminum diecast chassis which doubles as the power amplifiers’ heat sink.
Unmatched for Satellite Operation
The FT-847 includes crossband full duplex operatin, so you can hear yourdownlink signal while transmitting (on a different band) on the uplink. The FT-847 is ready for operatin on Mode A (TX: 145 MHz, RX: 29 MHz), Mode B (TX: 435 MHz, RX: 145 MHz), Mode J (TX: 145 MHz, RX: 435 MHz), or Mode T (TX: 21 MHz, RX: 145 MHz).
Independent display of both the TX and RX frequencies is provided, and twelve dedicated Satellite VFOs allow you to set the transceiver up for operation on a number of different transponders.
Both "Normal" and "Inverted" tracking of the uplink and dosnlink VFOs is available.
Leading-Edge Receiver Design
Strong enough to survive the rigors of competitive HF operatin, yet sensitive enough for stand-alone Moonbounce operation without an external preamplifier, the receiver section of the FT-847 includes a low noise preamplifier, followed by a quad-FET first mixer, whch provides outstanding rejection of intermodulation.
On 430 MHz, the receiver preamplifier is a HEMT device, for extremely low noise. And if you have tower-mounted preamplifiers you wish to utilize, the FT-847 can be configured to bypass the internal preamp in favort of passing +12V through your coax line to power your preamplifier.
Built-in Digital Signal Processing (DSP)
For improved interference rejection, or enhancement of the signal-to-nise ratio, the FT-847 incvludes a sophisticated audio DSP system. Featuring Auto-Notch, Noise Reduction, and Bandpass Filter circuits, the DSP is an effective tool for improving receiver performance.
The Bandpass Filter is particularly effective in weak signal work, such as EME (Moonbounce), as the CW bandwidth may be reduced to a razor-sharp 25 Hz, with a variable center frequency. This can yield almost 10 dB of signal-to-noise improvement over many commonly-used audio filters.
Shuttle-Jog™ Quick Tuning Aid
First introduced on Yaesu's FT-1000MP transceiver, the Shuttle-Jog™ Tuning Ring provides rapid frequency change by its unique spring-loaded design. Rotating the Shuttle-Jog™ ring slightly to the left or right beginas manual scanning to lower or higher frequencies, respectively; lean the ring further, and the scanning rate increases!
High-Contrast Multi-Function Blue Liquid Crystal Display (LCD)
The large blue LCD provides high resolution and contrast for easy viewing from a wide range of angles and light levels. Dozens of status indicators keep you informed of every aspect of your FT-847's operating characteristics, with a large Sub-VFO field on the right side beig particularly helpful during satellite operation. The LCD's illumination brightness is adjustable via an 8-level dimmer function.
|Nice TRX for little Money||10 years ago by do5bfh|
|FT-847 Review||12 years ago by N0RC|
|Very good alround rig||12 years ago by Lars|
|Great "all-in-one" radio||12 years ago by zm1267|
|My sad little rig||12 years ago by Bob56|
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