La Radio a 360°: ICOM IC-7851 News

E' uscito il nuovo prodotto di punta ICOM sul sito giapponese: IC-7851. Non sembra essere un prodotto completamente nuovo - il pannello frontale è quasi identica alla IC-7800, ma presenze può essere fuorviante.

http://www.icom.co.jp/products/amateur/products/basestation/ic-7851/

General specification

Frequency range

Reception frequency	30kHz ~ 60.000MHz (operating range)
(Warranty coverage)	100kHz ~ 29.999MHz 50.000MHz ~ 54.000MHz
Transmit frequency	1.810MHz ~ 1.825MHz 1.9075MHz ~ 1.9125MHz 3.500MHz ~ 3.575MHz 3.599MHz ~ 3.612MHz 3.680MHz ~ 3.687MHz 3.702MHz ~ 3.716MHz 3.745MHz ~ 3.770MHz 3.791MHz ~ 3.805MHz 7.000MHz ~ 7.200MHz 10.100MHz ~ 10.150MHz 14.000MHz ~ 14.350MHz 18.068MHz ~ 18.168MHz 21.000MHz ~ 21.450MHz 24.890MHz ~ 24.990MHz 28.000MHz ~ 29.700MHz 50.000MHz ~ 54.000MHz 4630kHz

Mode

LSB, USB, CW, RTTY, PSK31 / 63, AM, FM

The number of memory channels

101 (split memory 99ch + scan edge 2ch)

Antenna impedance

50Ω (unbalanced)

Antenna terminal

HF / 50MHz band for M type 4 system, BNC type 2 system for reception

Power-supply voltage

85 ~ 265V AC

Grounding scheme

Minus ground

Operating temperature limit

0 ℃ ~ + 50 ℃

Frequency stability

± 0.05ppm within (at the time of 0 ℃ ~ + 50 ℃ / 54MHz)

Frequency resolution

Minimum 1Hz

Power consumption

Receiving standby time of 120VA (TYP)
Reception at the maximum 130VA (TYP)
Send at the maximum 800VA

External dimensions
(I except the projections)

About 425 (W) × 149 (H) × 435 (D) mm

Weight

About 23.5kg

Transmission unit

Transmission output	SSB, CW, FM, RTTY, PSK31 / 63: 5W ~ 200W AM: 5W ~ 50W
Modulation scheme	SSB: balanced modulation AM: low-power modulation FM: phase modulation
Spurious emission intensity	Harmonic: More than 60dB (HF band) 70dB or more (50MHz band) Spurious area (I except the harmonic): More than 50dB (HF band) 70dB or more (50MHz band) Out-of-band region: More than 40dB (HF band) More than 60dB (50MHz band)
Carrier suppression ratio	63dB or more
Unnecessary sideband suppression ratio	70dB or more
Microphone impedance	600Ω
TX variable range	± 9.999kHz

Receiving part

Receiving scheme	Double superheterodyne system
Intermediate frequency	First: 64.455MHz (MAIN), 64.555MHz (SUB) Second: 36kHz
Receiver sensitivity (TYP)	SSB / CW / RTTY / PSK (BW = 2.4kHz) (when 10dB S / N) 0.1MHz ~ 1.7999MHz: -6dBμ (preamplifier 1: When ON) 1.8MHz ~ 29.990MHz: -16dBμ (preamplifier 1: When ON) 50MHz ~ 54MHz: -18dBμ (preamplifier 2: When ON) AM (BW = 6kHz) (when 10dB S / N) 0.1MHz ~ 1.7999MHz: + 16dBμ (preamplifier 1: When ON) 1.8MHz ~ 29.990MHz: + 6dBμ (preamplifier 1: When ON) 50MHz ~ 54MHz: + 0dBμ (preamplifier 2: When ON) FM (BW = 15kHz) (when 12dB SINAD) 28MHz ~ 29.990MHz: -6dBμ (preamplifier 1: When ON) 50MHz ~ 54MHz: -10dBμ (preamplifier 2: When ON)
Squelch sensitivity	SSB / CW / AM / RTTY / PSK: + 15dBμ below FM: 0dBμ below
Selectivity (TYP)	SSB (BW = 2.4kHz): 2.4kHz more / -3dB 3.6kHz or less / -60dB CW / RTTY / PSK (BW = 500Hz): 500Hz or more / -3dB 700Hz or less / -60dB AM (BW = 6kHz): 6.0kHz more / -3dB 15kHz or less / -60dB FM (BW = 15kHz): 12kHz or more / -6dB 20kHz or less / -60dB
Spurious interference ratio	70dB or more
Low-frequency output	More than 2.6W (8Ω load, when 10% distortion)
Low-frequency load impedance	8Ω
RIT variable range	± 9.999kHz more