ICOM IC-7851 HF/50MHZ TRANSCEIVER 200 Watt In Stock Ships Now

In Stock Ships Now   Solid design basics and HF expertise raising the bar Contesters and DXers are always looking for that competitive edge to magically pull out the weak signal that is either the rare country or multiplier they need to climb up the list. Larger antennas, higher gain pre-amps and other devices in line are great. However, what happens inside the radio with all those signals coming down your feedline can defeat all your efforts. With the design of the IC-7851, Icom's engineers focused on a new Local Oscillator (LO) that drastically reduces the phase noise. As a result of this design, the purity of the LO achieves a Reciprocal Mixing Dynamic Range (RMDR) of 110dB. In addition to the incredibly clean LO allowing you to hear the weak signals, the new spectrum scope design enables you to see the weak ones! Faster processors higher input gain, higher display resolution and a cleaner signal from the receiver's LO will give you a new window into the RF world. Adding this performance and functionality for both receivers give you a dual scope portal.   Specifications General Frequency coverage*1 U.S.A. Version RX TX         0.030– 60.000 MHz*2 1.800– 1.999 MHz 3.500 – 3.999 MHz 5.255 – 5.405 MHz*2 7.000 – 7.300 MHz 10.100–10.150 MHz 14.000– 14.350 MHz 18.068–18.168 MHz 21.000– 21.450 MHz 24.890–24.499 MHz 28.000– 29.700 MHz 50.000–54.000 MHz   *1 Frequency ranges vary depending on version. *2 Some frequency ranges are not guaranteed. *3 Carrier point frequency. Mode USB, LSB, CW, RTTY, PSK31/63, AM, FM Number of channels 101 (99 regular, 2 scan edges) Antenna connector SO-239×4 and BNC×2 (50Ω unbalanced (Tuner off)) Power supply requirement: 85–265V AC Temperature range 0°C to +50°C; +32°F to +122°F Frequency stability Less than ±0.05ppm (0°C to +50°C @ 54MHz, after warm up) Frequency resolution 1Hz (minimum) Power supply requirement 85–265V AC Power supply requirement Tx Max. power: 800VA Rx Stand-by: 200VA (typ.) Max. audio: 210VA (typ.) Dimensions 425×149×435 mm; 16.73×5.87×17.13 in Weight 23.5 kg; 51.8 lb Transmitter Output power SSB, CW, RTTY, PSK31, FM AM Transverter Connector, CW (continuously adjustable) 5–200W 5–50W More than –20dBm Modulation system SSB AM FM   Digital P.S.N. modulation Digital low power modulation Digital phase modulation Spurious emission More than 60dB (HF bands) More than 70dB (50 MHz band) Carrier suppression More than 63dB Unwanted sidebandr suppression More than 70dB δTX variable range ±9.999 kHz Microphone impedance 600Ω (8-pin connector) Receiver Receive system Double conversion super-heterodyne system Intermediate frequencies Main receiver:   Sub receiver:   64.455MHz/36kHz (1st/2nd) 64.555MHz/36kHz (1st/2nd) Sensitivity (typical) SSB, CW, RTTY, PSK31, FM 0.1–1.799 MHz 1.8–29.999 MHz 50.0–54.0 MHz AM 0.1–1.799 MHz 1.8–29.999 MHz 50.0–54.0 MHz FM 28–29.999 MHz 50.0–54.0 MHz   (BW: 2.4 kHz at 10dB S/N) 0.5μV 0.16μV 0.13μV (BW: 6 kHz at 10dB S/N) 6.3μV 2μV 1μV (BW: 15 kHz at 12dB SINAD) 0.5μV 0.32μV Squelch sensitivity (Pre-amp: OFF) SSB, CW, RTTY, PSK FM   Less than 5.6μV Less than 1μV Selectivity (representative value) SSB (BW: 2.4 kHz, sharp)   CW, RTTY, PSK (BW: 500 Hz, sharp)   AM (BW=6KHz)   FM (BW: 15 kHz)     More than 2.4 kHz/–3dB Less than 3.6 kHz/–60dB More than 500 Hz/–3dB Less than 700 Hz/–60dB More than 6.0 kHz/–3dB Less than 15.0 kHz/–60dB More than 12.0 kHz/–6dB Less than 20.0 kHz/–60dB Spurious and image rejection ratio More than 70dB Audio output power More than 2.6W at 10% distortion with an 8Ω load RIT variable range ±9.999kHz Antenna Tuner Matching impedance range HF bands: 16.7Ω to 150Ω unbalanced (VSWR better than 3:1) 50MHz: 20Ω to 125Ω unbalanced (VSWR better than 2.5:1) Minimum operating power HF bands: 8W 50MHz band: 15W Tuning accuracy VSWR 1.5:1 or less Insertion loss Less than 1.0 dB (after tuning)