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ICOM IC-7851 HF/50MHZ TRANSCEIVER 200 Watt

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Price:
$12,595.00
SKU:
IC7851
Shipping:
Calculated at checkout


Product Description

 

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)

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