Icom IC-7760 HF/50 MHz Base Station Amateur Transceiver Radio

Further details of Icom IC-7760 HF/50 MHz Base Station Amateur Transceiver Radio

• Basic accessories: control head, AC power cable, AC adapter, ethernet cable (3m), desktop stand, connectors
• SD Card Slot
• Touch screen and multiple call buttons
• Dual display control head
• RF gain and squelch control with one button
• UTC/local clock and timer function
• 1 Hz tuning and display
• Multifunction meter (S-meter, power, ALC, COMP, SWR, Id, Vd and TEMP)
• Control of AH-730 external antenna tuner (If AH-730 is connected, the output power of the specified antenna connector is automatically set to 100 W or less)
• USB port with optional RC-28, keyboard, mouse, and USB flash drive
• Transmit power limiting function on all bands
• RTTY/PSK encoder and decoder
• Main/subband tracking function for diversity reception
• CW auto-tuning
• Normal or short Morse code style

Single control head and RF deck configuration for greater installation flexibility and space-saving operation

The IC-7760 consists of a separate control head and RF deck, and uses a LAN cable to connect the two. This increases installation flexibility. A control cable (3 m) is included with the transceiver, and a commercially available LAN cable* can be used to install the RF deck in a remote location. It allows the RF deck to be placed in a rack or other location away from the station desk, providing a quiet booth environment away from the noise of the fan used to dissipate the heat generated by the RF deck.

Built-in automatic antenna tuner

The IC-7760 includes a mechanical relay-type internal antenna tuner, a first for our 200 W models. This provides faster tuning than the conventional variable capacitor type. After tuning, tuning information is automatically recalled the next time the frequency is selected, facilitating smooth band switching and multi-band operation.

DIGI-SEL and Preamp

The DIGI-SEL (Digital Pre-selector) is highly effective in rejecting out-of-band strong signals such as from broadcasting stations or multi-multi operation. In conventional models (such as IC-7850/51 or IC-7610), the DIGI-SEL circuit was located soon after the RF input (antenna) to prevent signal distortion by out-of-band interference. Even if the preamp was turned ON, the noise figure (receiver sensitivity) could not be improved, as DIGI-SEL had an insertion loss due to its narrow bandwidth. In the IC-7760, which is a direct sampling system, DIGI-SEL prevents overflow (OVF) due to unwanted out-of-band signals rather than signal distortion, and the preamp uses the A/D converter to take full advantage of its dynamic range. When preamp is turned ON in the IC-7760, the preamp enhances the intended signal first, then DIGI-SEL filters out unwanted out-of-band signals. This makes it possible that the preamp works together with DIGI-SEL.

I/Q signal output

USB connector on RF deck (USB 3.0 cable required)

The I/Q signals received by the IC-7760 can be output to a PC as a digital output via the dedicated I/Q signal connector (USB on the RF dekk). The HDSDR (free software) allows you to listen to the received signals or display the spectrograph on a PC. In combination with CW Skimmer or N1MM Logger+, you can decode virtually all Morse signals in the operating band. This feature is especially useful for contesting and DX hunting, as well as effective recall during split operations.

Audio Scope flexibility

The Audio Scope screen displays the frequency components of the transmit and receive signal on the FFT scale, and the waveform components on the oscilloscope. Audio Scope makes it easy to check signal characteristics such as microphone compressor level, filter width and notch filter. Use the oscilloscope to monitor the received CW keying waveforms.