IC-746

Recenze (Radiožurnál SZR)

Odkazy :

http://www.vartel.com/discussiongroups.htm - bulletin board

SPECIFICATIONS

GENERAL

• Frequency Coverage:

  Receive: 0.030 - 60.000 MHz*1

  Transmit:

  1.800 - 1.999 MHz*2

  3.500 - 3.999 MHz*2

  7.000 - 7.300 MHz*2

  10.100 - 10.150 MHz

  14.000 - 14.350 MHz

  18.068 - 18.168 MHz

  21.000 - 21.450 MHz

  24.890 - 24.990 MHz

  28.000 - 29.700 MHz

  50.000 - 54.000 MHz*2

  144.000 - 148.000 MHz*2

  *1 Except for some frequency ranges
  *2 Depending on version
  
  

• Mode: USB, LSB, CW, RTTY, AM, FM
• Number of Memory Channels: 102 (99 regular, 2 scan edges and 1 call)
• Antenna Connector: SO-239x3 [2 for HF + 1 for 144 MHz bands; 50 Ohm]
• Usable Temperature Range: -10°C to +60°C; +14°F to +140°F
• Frequency Stability: Less than ±7 ppm from 1 min. to 60 min. after power ON. After that, the rate of stablity change is less than ±1 ppm at +25°C; +77°F. Temperature fluctuations 0 °C to +50°C (+32°F to + 122°F) less than ±5 ppm.
• Power Supply Requirement: 13.8 V DC (±15% negative ground)
• Current Drain (at 13.8 V DC): Transmit max. power: 20A
  Receive standby: 2.5A
  max. audio: 2.7A
• Dimensions (approx): 287(W) x 120(H) x 316.5(D) mm, 11.3(W) x 4.75(H) x 12.5(D) in (projections not included)
• Weight (approx): 8.9 kg; 19.625 lb.

Transmitter

• Output Power:

  SSB/CW/RTTY/FM: 5-100 W

  AM: 2-40 W

• Modulation System:

  SSB, AM: Balanced modulation

  FM: Variable reactance modulation

• Spurious Emissions: -50 dB (HF), -60 dB(50/144MHz)
• Carrier Supression: More than 40 dB
• Unwanted Sideband Supression: More than 50 dB
• Delta TX Variable Range: ±9.999 kHz
• Microphone Connector: 8-pin connector (600 Ohm)

Receiver

• Sensitivity:
  • SSB, CW, RTTY (10 dB S/N):
    • 0.16 µV (1.8-29.99 MHz)*1
    • 0.13 µV (50MHz)*2
    • 0.11 µV (144 MHz)*3
  • AM (10 dB SINAD):
    • 13 µV (0.5-1.799 MHz)
    • 2.0 µV (1.80-29.99 MHz)*1
    • 1.0 µV (50/144 MHz)*2,3
  • FM (12 dB SINAD):
    • 0.5 µV (28.0-29.99 MHz)
    • 0.25 µV (50 MHz)*2
    • 0.18 µV (144 MHz)*3
    • *1 Pre-amp 1 ON, *2Pre-amp 2 ON, *3Pre-amp ON
• Squelch Sensitivity:

  USB,LSB,CW, RTTY - Less than 5.6 µV

  FM - Less than 1.0 µV

• Selectivity:

  USB, LSB, CW, RTTY - More than 2.1 kHz/-6 dB ; Less than 4.0 kHz/-60 dB

  AM, FM-N - More than 9.0 kHz/-6 dB ; Less than 20 kHz/-40 dB

  FM - More than 12 kHz/-6 dB ; Less than 30 kHz/-50 dB

• Spurious and Image Rejection Ratio: More than 70 dB (except IF through in 50 MHz band)
• RIT Variable Range: ±9.999 kHz
• Audio Output Power (at 13.8 V DC): More than 2.0 W at 10% distortion with an 8 Ohm load

All specifications and options subject to change without notice or obligation.

SUPPLIED ACCESSORIES

• Hand microphone
• Spare fuses
• Key plug
• DC power cable

OPTIONS

Automatic Antenna Tuners, Antenna Element and Antenna Selector

• AH-4 HF + 50 MHz AUTOMATIC ANTENNA TUNER: Covers 3.5 - 54 MHz with a 7 m (23 ft) or longer wire antenna
• AH-2b Antenna Element: A 2.5 m long antenna for mobile operation with the AH-3. All bands between 7 - 54 MHz can be matched.
• EX-627 AUTOMATIC ANTENNA SELECTOR: For up to 9 separate antenna connections.

DC Power Supplies

• PS-85 DC POWER SUPPLY: Output: 13.8 V DC (20 A max.)

External Speakers

• SP-21 EXTERNAL SPEAKER: Designed for base station operation. Input impedance: 8 Ohm; Max input power: 5 W

Microphones

• SM-8 DESKTOP MICROPHONE: Electret condenser-type desktop microphone including 2 connection cables for simultaneous connection of 2 transceivers. [Up/Down] switches are included.
• SM-20 DESKTOP MICROPHONE: Unidirectional, electret microphone for base station operation. Includes [Up]/[Down] switches and a low cut function.
• HM-36 HAND MICROPHONE: Same as supplied.

Internal Units and Filters

• FL-100, FL-101, FL-103, FL-223, and FL-232 9 MHz FILTERS: Have good shape factor and provide you with better reception.

  FL-100: 500 Hz/-6 dB (CW/RTTY narrow)

  FL-101: 250 Hz/-6 dB (CW narrow)

  FL-103 2.8 kHz/-6 dB (SSB wide)

  FL-223: 1.9 kHz/-6 dB (SSB narrow)

  FL-232: 350 kHz/-6 db (RTTY, CW narrow)

  
  

• FL-52A, FL-53A, FL-96, FL-222, and FL-257 455 kHz FILTERS: Have good shape factor and provide you with better reception.

  FL-52A: 500 Hz/-6 dB (CW/RTTY narrow)

  FL-53A: 250 Hz/-6 dB (CW narrow)

  FL-96: 2.8 Hz/-6 dB (SSB wide)

  FL-222: 1.8 kHz/-6 dB (SSB narrow)

  FL-257: 3.3 kHz/-6 db (SSB wide)

Others

• CT-16 SATELLITE INTERFACE UNIT: Easy tuning when connecting another Icom VHF transceiver for instant satellite communications.
• CT-17 CI-V LEVEL CONVERTER: For remote transceiver control using a personal computer. Equipped with an RS-232C port. You can change frequencies, operating mode, memory channels, etc.
• UT-102 VOICE SYNTHESIZER UNIT: Announces operating frequency and mode.
• CR-282 HIGH-STABILITY CRYSTAL UNIT: Contains a temperature-compensating oven heater and crystal unit for improved frequency stability. Frequency stability: ± 0.5 ppm