The MARK-V FT-1000MP Field is an elite-class HF transceiver providing exceptional performance both on transmit and receive. The MARK-V FT-1000MP Field is designed for the most competitive operating situations, whether you primarily operate in contest, DX, or digital-mode environments. Built on the foundation of the popular MARK-V FT- 1000MP transceiver, the MARK-V FT-1000MP Field provides up to 100 Watts of power output on SSB, CW, and FM (25 Watts AM carrier). Additionally, a Yaesu exclusive “Class-A” SSB operating mode provides ultra- linear signal output, at a power output level of up to 25 Watts. Also new on the MARK-V FT-1000MP Field is the IDBT (Interlocked Digital Bandwidth Tracking) System, which automatically aligns the bandwidth of the Enhanced Digital Signal Processing (EDSP) receiver passband to match the IF filter passband. This improves operating efficiency by removing the extra step of making separate analog and DSP filter adjustments. This feature can be enabled or disabled with the press of a button, for maximum flexibility. And for exceptional protection from strong nearby incoming signals, Yaesu-exclusive VRF (Variable RF Front-End Filter) serves as a high-performance Preselector-ideal for multi-operator contest environments. This filter is manually tuned, allowing the operator to optimize sensitivity or signal rejection with the twist of a knob. GENERAL DESCRIPTION In addition to the contribution of the VRF Preselector, superb receiver performance is a result of direct lineage from the legendary FT-1000D and FT-1000MP. New technology Direct Digital Synthesizers (two 10-bit and three 8-bit) are used in the local oscillator (all driven by a single TCXO master oscillator), resulting in extremely fine tuning resolution with thirteen selectable tuning steps down to 0.625 Hz. You may select either “Flat” or “Tuned” front end RF amplification (using four FETs in a double push-pull, constant-gain stage), IPO (Intercept Point Optimization) utilizing direct feed to the first mixer, and/or three levels of RF attenuation in 6- dB steps. The “Tuned” RF Preamplifier provides high gain and low noise figure on the higher frequency bands, with lower gain and greater selectivity on the low bands, where strong-signal performance is critically important. To battle QRM, the MARK-V FT-1000MP Field comes equipped with a formidable defense. Fine tailoring of the IF passband is made possible with individually- selected, cascaded 2nd- and 3rd-IF crystal filter banks. World-renowned Collins® mechanical 500- Hz CW filters are available as options for the Sub Receiver 2nd IF, and main receiver 3rd IF strip. An IF notch filter and concentric IF Shift and Width controls are also provided. The IF Width circuit allows continuously narrowing receiver passband by selectively moving either the upper or lower filter skirt just as much as needed to reduce QRM while still preserving the maximum usable bandwidth. This extensive analog IF filtering protects the EDSP circuits that follow it, ensuring unmatched performance during crowded band conditions.