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Icom IC-7700

Icom IC-7700

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Bedømmelse af Icom IC-7700
Bedømmelse: 4 ud af 5 baseret på 2 stemmer
Vare nr.  17700

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- Spectrum Waterfall Display Function
- Mouse Operation for Spectrum Scope
- Audio Scope Function for AF Observation
- Simplified Remote Control for RS-BA1*

 
Sharpened Performance

Spectrum Waterfall Display Function
The spectrum waterfall function can show the changing amplitude of frequency spectrum over time. A weak signal which cannot be recognized with the spectrum scope may be found in the waterfall screen. With the high performance receiver, the IC-7700 increases your chances of making QSOs. When used in combination with spectrum and waterfall screens, you can observe detailed band activity by other stations.

Mouse Operation for Spectrum Scope
By connecting a PC mouse to the USB port, the spectrum scope can work with mouse operation. You can select operating frequency by clicking the spectrum scope.
For example:
- Left-click to change operating frequency.
- Right-click to temporarily change the receiving frequency. Release the mouse button to return.
- Click and hold a button (either left or right) and move to the right or left side of the screen to increase or decrease the operating frequency (similar to rotating the main dial).

Audio Scope Function for AF Observation
The audio scope function shows the FFT scope with waterfall and the oscilloscope of either transmitting or receiving audio*. This function can be used for observing various AF characteristics such as microphone compressor level, filter width, notch filter and receive keying waveform in CW mode.
* Transmitting audio can be shown on voice modulation modes only.
The transmit quality monitor function must be ON to monitor the transmitting audio.

Simplified Remote Control for RS-BA1*
IP remote control operation with the optional RS-BA1, the IC-7700 has a built-in RS-BA1 base station function and can be made a remote control station with simplified configuration. (Base station PC is not required.) The IC-7700 gives consistent response time as the main dial tunes smoothly. In addition, the IC-7700 can wake up from standby mode via the RS-BA1 software.
*RS-BA1 Version 1.60 (or later) is required.

Enhanced Digital Voice Recorder
In addition to a total of 200 seconds of voice memories (up to 30 seconds for each channel), the QSO recorder function records both incoming and outgoing calls into a USB flash drive. Up to 18 hours of continuous recording is possible with a 2GB disk space. Operating frequency, mode, S-meter and output power are also automatically written in the memory.

Other New or Enhanced Functions
- Waveform outline in spectrum scope (ON/OFF)
- Voice TX function transmits the recorded audio repeatedly
- Increase APF volume level up to 6dB (Adjustable by 1dB step)
- TX delay function sets the transmission timing to control a connected external linear amplifier (OFF/10ms/15ms/20ms/25ms/30ms, each for HF and 50MHz band)
- Added RIT and ⊿TX commands for CI-V remote control
- Expansion of 7MHz band (7.000-7.200MHz) for EUR version

 

General

Frequency coverage*1 :
U.S.A. Version
Rx
0.030– 60.000MHz*2

Tx
1.800– 1.999MHz
3.500– 3.999MHz
5.255– 5.405MHz*2
7.000– 7.300MHz
10.100–10.150MHz
14.000– 14.350MHz
18.068–18.168MHz
21.000– 21.450MHz
24.890–24.990MHz
28.000– 29.700MHz
50.000–54.000MHz
Frequency coverage*1 :
Europe, UK Version
Rx
0.030– 60.000MHz*2

Tx
1.810– 1.999MHz
3.500– 3.800MHz
7.000– 7.200MHz
10.100– 10.150MHz
14.000–14.350MHz
18.068– 18.168MHz
21.000–21.450MHz
24.890– 24.990MHz
28.000–29.700MHz
50.000– 52.000MHz
Mode USB, LSB, CW, RTTY, PSK31, AM, FM
Number of channels 101 (99 regular, 2 scan edges)
Antenna impedance 50Ω unbalanced (Tuner off)
Antenna connector SO-239×4 and BNC×1
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, after warm up)
Frequency resolution 1Hz (minimum)
Power consumption Tx Max. power 800VA
Rx Stand-by 200VA (typ.)
Max. audio 210VA (typ.)
Dimensions (W×H×D)
(projections not included)
425×149×437 mm;
16.73× 5.87×17.2 in
Weight (approx.) 22.5kg; 49.6lb
*1 Frequency ranges vary depending on version.
*2 Some frequency ranges are not guaranteed.

 

Transmitter

Output power
(continuously adjustable)
SSB, CW, RTTY, PSK31, FM :
5–200W

AM :
5–50W
Modulation system SSB :
DPSN modulation

AM :
Digital low power modulation

FM :
Digital phase modulation
Spurious emission Harmonics :
More than 60dB (HF bands)
More than 70dB (50MHz band)

Unwanted emissions (Except harmonics) :
More than 50dB (HF bands)
More than 66dB (50MHz band)
Carrier suppression More than 63dB
Unwanted sideband suppression More than 80dB
⊿TX variable range ±9.999kHz
Microphone impedance 600Ω (8-pin connector)
 

Receiver

Receive system Double conversion
super-heterodyne system
Intermediate frequencies 1st : 64.455MHz
2nd : 36kHz
Sensitivity (typical) SSB, CW, RTTY (BW: 2.4kHz at 10dB S/N)
0.1–1.799MHz 0.5μV (Pre-amp 1 ON)
1.8–29.999MHz 0.16μV (Pre-amp 1 ON)
50.0–54.0MHz 0.13μV (Pre-amp 2 ON)

AM (BW: 6kHz at 10dB S/N)
0.1–1.799MHz 6.3μV (Pre-amp 1 ON)
1.8–29.999MHz 2μV (Pre-amp 1 ON)
50.0–54.0MHz 1μV (Pre-amp 2 ON)

FM (BW: 15kHz at 12dB SINAD)
28–29.990MHz 0.5μV (Pre-amp 1 ON)
50.0–54.0MHz 0.32μV (Pre-amp 2 ON)
Squelch sensitivity
(Pre-amp: OFF)
SSB, CW, RTTY, PSK31
Less than 5.6μV

FM
Less than 1μV
Selectivity (representative value) SSB (BW: 2.4kHz)
More than 2.4kHz/–3dB
Less than 3.6kHz/–60dB

CW (BW: 500Hz)
More than 500Hz/–3dB
Less than 700Hz/–60dB

RTTY, PSK31 (BW: 350kHz)
More than 360Hz/–6dB
Less than 650Hz/–60dB

AM (BW: 6kHz)
More than 6.0kHz/–3dB
Less than 15.0kHz/–60dB

FM (BW: 15kHz)
More than 12.0kHz/–6dB
Less than 20.0kHz/–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
PHONES connector 3-conductor 6.35 (d) mm (1⁄4″)
EXT SP connector 2-conductor 3.5 (d) mm (1⁄8″) /8Ω
The LCD display may have cosmetic imperfections that appear as small or dark spots. This is not a malfunction or defect, but a normal characteristic of LCD displays.

All stated specifications are subject to change without notice or obligation.