Yaesu's renowned DSP circuitry is led by the ultra-sharp Bandpass Filter feature, which utilises the combined effects of independently-adjustable audio HPF (High-Pass-Filter) and LPF (Low-Pass-Filter) elements to provide very steep skirt selectivity and reduction of noise. In voice modes, the LPF may be adjusted to begin cutting off frequencies between 1500-3000 Hz, while the HPF cutoff frequency may be adjusted over the range 100 - 1600 Hz. On CW, the DSP BPF takes the form of an Audio Peaking Filter, with minimum bandwidths of 400 Hz, 200 Hz, 100 Hz, and even 25 Hz available for EME (Moonbounce) or other very-weak-signal work.

Renowned for their excellent frequency response, thermal stability, and low phase distortion, Collins Mechanical Filters in 2-5 kHz and 500 Hz (-6 dB) bandwidths are available as options for the FT-847. The Collins SSB filter provides a very "flat" passband response which faithfully reproduces both voice and data signals (such as satellite PSK). The 500 Hz Collins 500 Hz filter is ideal for CW or RTTY work, with Wide/Narrow selection available from the front panel. Combined with the DSP audio filters, the Collins Mechanical Filter options make the FT-847 an outstanding performer on SSB, CW, or Data!

* SSB Excellence for Todays Active Amateur!
Your FT-847's "talk power" is enhanced by the built-in RF clipping-type Speech Processor which increases average SSB output by approximately 6 dB. And the transmitted IF passband frequency may be adjusted via Menu, to match or enhance the frequency characteristics of your voice pattern. Independent USB and LSB alignment Menus are provided; use the SSB MONITOR feature to make precise adjustments.

* Data Capability for Every Operating Need!
The rear panel of the FT-847 includes convenient interface jacks for Data mode operating. For AFSK, RTTY, 300 bps Packet, AMTOR, PSK, HSCW, etc-, the three-pin DATA IN/OUT jack also supports "PTT" control in addition to AFSK input and output. For 1200/9600 bps VHF/UHF Packet, the PKT jack provides optimised input and output data lines, plus PTT and squelch status lines. The DATA IN/OUT jack's "RX" connection may also be used for interfacing to weather satellite, WeatherFax, or other computer based specialised decoding software, as well as for tape recording of incoming receiver audio.

More than two decades after Yaesu's FT-227R was introduced as the world's first synthesised transceiver with memory, the FT-847 fortifies Yaesu's position as the leader in imaginative, easy-to-use memory and scanning circuitry design.

The FT-847 includes 78 regular memories, plus upper/lower band scanning limit memories, a CALL channel, and a HOME channel on each band. A two-channel Quick Memory Bank (QMB) allows instant recall of urgent frequencies, and nineteen special "Satellite Memory', locations with 8-character alpha-numeric labels allow you to note the satellite name and transponder mode (e-g-"AO-10/B")

Among the versatile scanning capabilities of the the FT-847 are:

* Scan activation either from the microphone or the front panel of the transceiver. After stopping on a busy channel, the restart time may be programmed (via the Menu) at 3, 5, or 10 seconds.

* SMART SEARCH™ sweeping of the Main VFO (FM mode), with automatic loading of a special bank of 20 memory channels.

* Programrnable Memory Scan, using sub-band limits you program yourself. For example, you might want to program 144.5 - 148 MHz on 2 meters so as to avoid encroachment on the SSB/CW sub-band at 144-0 ~ 146 MHz

* Memory Channel #1 serves as the PRIORITY Channel, which can be checked for activity every five seconds.

* Repeater and Tone Signalling Features for Today's FM Operator! The FT-847 is an outstanding performed for many aspects of FM operation.

* Independently-programmable Repeater Shifts for 28, 50, 144, and 430 MHz.

* Automatic Repeater Shift (ARS) for 144 MHz and 430 MHz.

* FM Wide/Narrow modes for 29 MHz or crowded VHF/UHF environments.

* CTCSS/DCS Encoder/Decoder and 1750Hz Tone Encoder are built in.

* Discriminator Center Meter for precise tuning on Doppler-shifted FM satellite signals.

* Control Antenna System SWR with the FC-20 HF/50 MHz External Automatic Tuner Option.
Ideal for tuning out minor SWR variations in your antenna system, the FC-20 will analyse the impedance present at the "radio" end of your coax, and adjust the impedance to match the 50 Ohm requirement for your FT-847. Utilising fixed inductances and variable capacitors controlled by precision stepper motors, the FC-20 can accommodate SWRs of up to 3:1 on HF and up to 2:1 on 50 MHz. The FC-20 also provides 100 memories for tuning data, so you'll be instantly ready to transmit on your favourite frequencies, and it includes a convenient Auto-Start feature in case the antenna system impedance suddenly changes.

* Yaesu's Patented ATAS-100 (ACTIVE-TUNING ANTENNA SYSTEM) Provides HF/VHF/UHF Coverage with Automatic Motorised Tuning!
The FT-847 Earth Station System can be expanded for mobile use on the 7/14/21/28/50/144/430 MHz bands via the revolutionary ATAS-100 ACTIVE-TUNING ANTENNA SYSTEM option. On HF and 50 MHz, the ATAS-100 is controlled via DC voltage transmitted on the coaxial cable, with an internal motor adjusting the antenna for best SWR by changing the length of its unique "accordion" tuning section; no "resonators" or optional "whips" need be changed!

A single touch on the FT-847's TUNER key begins the tuning process, which is completed in seconds. The ATAS-100 is compatible with many common mobile mounts, which are available from your Yaesu dealer. Coaxial cable is not included.

* Separate Antenna Connectors for HF, 50 MHz, 144 MHz, and 430 MHz!
Allowing ease of connection for your antenna systems, the separate antenna connectors for HF, 50 MHz, 144 MHz, and 430 MHz also facilitate full-duplex operation by avoiding internal "Duplexers" which can compromise noise figure. If you are using an HF through 50 MHz mobile antenna, the Menu System allows you to switch the 50 MHz RF line to the "HF" antenna jack. too!

* You can label each of the 19 special Satellite Memories with alpha-numeric "tags" to help you remember the satellite name and mode.

* During transmission, you can command the "satellite meter" function to indicate either power output (PO), discriminator center status (DISC), or ALC voltage (ALC).

* For data operation on satellites, the rear-panel DATA IN/OUT and PKT jacks can accommodate 9600 bps GMSK, 1200 bps PSK, or 1200 bps AX.25 AFSK modes.