Audio Technica – Audio speaker “AT-SPC100″ that delivers 360-degree sounds - Audio Technica’s new audio speaker will be out on June 20. It features the “360° Sound Reflector System” and a conical shape that allows the speaker to del...
17 hours ago
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Unmatched for Satellite Operation
The FT-847 includes cross band full duplex operating, so you can hear your downlink signal while
transmitting (on a different band) on the uplink. The FT-847 is ready for operating 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
Both "Normal" and "Inverted" tracking of the uplink and downlink VFOs is available.
Leading-Edge Receiver Design
Strong enough to survive the rigors of competitive HF operating, yet sensitive enough for stand
alone Moon bounce operation without an external preamplifier, the receiver section of the FT-847
includes a low noise preamplifier, followed by a quad-FET first mixer, which 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 favorite 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-noise ratio, the FT-847
includes 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 (Moon bounce),
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 begins 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 being
particularly helpful during satellite operation.
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|From The DXrobot|