Icom IC-7300 : Amateur Radio (Ham) Base Station

HF/50/70MHz Transceiver

The IC-7300 is a revolutionary compact radio that will excite HF operators from beginners to experts. This new model has a high-performance real-time spectrum scope and employs a new RF direct sampling system. The IC-7300’s real-time spectrum scope provides top-level performance in resolution, sweep speed and dynamic range. While listening to received audio, the operator can check the real-time spectrum scope and quickly move to the intended signal. The combination of the real-time spectrum scope and waterfall function improves the quality and efficiency of HF operation.

The new RF direct sampling system employed by the IC-7300 realises class leading RMDR (Reciprocal Mixing Dynamic Range) and Phase Noise characteristics. In addition, the IC-7300 features the 70MHz band (European versions only), a large touch screen colour TFT LCD, convenient multi-function dial knob, automatic antenna tuner, voice recorder function and more.

Class Leading Real-Time Spectrum Scope
You no longer have to choose whether to listen to the audio or have the spectrum scope sweep for signals as the IC-7300’s real-time spectrum scope offers the simultaneous operations found in higher tier models. This means you can use either the spectrum scope or the waterfall to quickly move to an intended signal while listening to the receiver audio. The IC-7300’s touch screen introduces a “Magnify” function. So, when you first touch the scope screen around the intended signal, the touched part is magnified. A second touch of the scope screen changes the operating frequency and allows you to accurately tune.

High-Resolution Waterfall Function
The combination of the waterfall function and the real-time spectrum scope assists in maximum receive performance of the IC-7300 and increases QSO opportunities without missing weak signals. The waterfall function shows a change of signal strength over a period of time and allows you to find weak signals that may not be apparent on the spectrum scope.

Audio Scope Function
The audio scope function can be used to observe various AF characteristics such as microphone compressor level, filter width, notch filter width and keying waveform in the CW mode. Either the transmit or receive audio can be displayed on the FFT scope with the waterfall function and the oscilloscope.

RF Direct Sampling System
The IC-7300 employs an RF direct sampling system. RF signals are directly converted to digital data and processed in the FPGA (Field-Programmable Gate Array), making it possible to simplify the circuit construction. This system is a leading technology making an epoch in amateur radio.

New “IP+” Function
The new “IP+” function improves 3rd order intercept point (IP3) performance. When a weak signal is received adjacent to strong interference, the AD converter is optimized against signal distortion.

Class Leading RMDR (Reciprocal Mixing Dynamic Range) and Phase Noise Characteristics
The IC-7300’s RMDR is improved to about 97dB* (typical value) and Phase Noise characteristics are improved about 15dB (at 1 kHz frequency separation) compared to the IC-7200. The superior Phase Noise characteristics reduce noise components in both receive and transmit signals.
* At 1 kHz frequency separation (received frequency: 14.2MHz, MODE: CW, IF BW: 500Hz)

Large Touch Screen Colour TFT LCD
The large 4.3 inch colour TFT touch LCD offers intuitive operation. Using the software keypad of the touch screen, you can easily set various functions and edit memory contents.

Multi-Dial Knob for Smooth Operation
The combination of the multi-dial knob and the touch screen offers quick and smooth operation. When you push the multi-dial knob, menu items are shown on the right side of the display. You can select an item with a touch of the screen and adjust levels by turning the multi-dial knob.

SD Memory Card Slot for Saving Data
The IC-7300 can store various contents into SD card such as received and transmitted audio, voice memories, RTTY/CW memories, RTTY decode logs and captured screen images. Personal and firmware updating data can also be stored to the SD card for easy setting.

15 Discrete Band-Pass Filters
The IC-7300 has 15 discrete RF band-pass filters. The RF signal is only passed through one of the band-pass filters, while any out of range signals are rejected. High Q factor coils are used to minimize the loss in the RF band-pass filters.

Built-In Automatic Antenna Tuner
The antenna tuner memorizes its settings based on your transmit frequency, so that it can rapidly tune when you change operating bands. The Enforced Tuning function* allows a wide range of temporary antennas to be tuned.
* Do not use the Enforced Tuning function except in case of an emergency. Transmission power may be reduced.

Superior Sound Quality
To offer superior sound quality, a new speaker unit has been incorporated and is allocated dedicated space in the aluminium die-cast chassis.

Other features 
• New HM-219 hand microphone supplied
• Effective large cooling fan system
• A Multi-function meter
• 101 memory channels (99 regular, 2 scan edges) • Optional RS-BA1 IP remote control software (the spectrum scope with the waterfall can be observed)
• CW functions: Full break-in, CW reverse, CW auto tuning

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

Icom IC-7610 HF/50MHz Transceiver

ic-7610_icom ic-7610

IC-7610 HF/50MHz Transceiver (Base Station)

The IC-7610 is the successor to the IC-7600 and will be a dual-watch capable HF+50MHz 100W base station with built-in antenna tuner.

The LCD will be touch screen and you will be able to connect an external display.

More info to follow

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

Icom IC-7800 HF/50MHz All Mode Transceiver

7800HF/50MHz All Mode Transceiver

Icom has been developing radio communication equipment for over forty years. Its heritage has always been based on technical excellence from the first analogue PLL circuit in the IC-200, to the ground-breaking 32-bit floating point DSP of the IC-756PRO. Ham radio stations increasingly use high power and high gain antennas that raise the field strength of unintended signals, and thus require a wider receiver dynamic range. Icom has developed the flagship model IC-7800 which is a fusion of forty years analogue RF circuit development expertise, with cutting edge digital technology. The result is 110dB dynamic range, +40dB 3rd order intercept point in HF bands and other phenomenal performance features. The receivers combine various current and new technology, to obtain the +40dBm IP3.

+40dBm IP3 (3rd order Intercept Point)
Icom’s 40 years of analogue RF circuit experience combined with cutting edge digital technology results in an astonishing 110dB receiver dynamic range and a +40dBm IP3 in the HF bands. A first in Ham radio!

To achieve this superior receiver performance, Icom’s engineering team completely reviewed the whole analogue circuit and matched it to the DSP units. This allowed us to explore new technical dimensions such as a double conversion super-heterodyne system, mechanical relay BPF switching and two roofing filters.

Mechanical relay BPF (Band Pass filter) switching and two roofing filters
The IC-7800 uses highly reliable and durable mechanical relays for BPF switching instead of non-linear semi-conductors which cause distortion. The mechanical relay prevents 2nd order distortion at the primary stage of signal processing.

The IC-7800 has two roofing filters before the 1st IF amplifier stage. One is 15 kHz filter for FM mode and the other is 6kHz filter for SSB, CW, AM and data modes. The IC-7800 switches between these two roofing filters depending on operating mode. Typically, transceivers use only one broad 15 kHz roofing filter for all modes. This is not an optimal design for SSB, CW, or AM modes.

The two roofing filters dramatically improve the blocking characteristics from strong adjacent signals.

Automatic tracking pre-selector
The pre-selector works from 1.5MHz to 30MHz. The pre-selector automatically tracks the intended signal, keeping the pre-selector’s bandwidth centred on the operating frequency at several kHz steps (minimum). The pre-selector rejects unwanted out of band interference from multi-multi operation or strong broadcast stations, as your first line of defence against interfering signals. The centre frequency of the pre-selector is adjustable from the DIGI-SEL tuning knob on the front panel.

Double conversion super-heterodyne system
While mixers often become a cause of signal distortion and spurious emissions, the IC-7800 utilises a double conversion super-heterodyne system using a newly developed image rejection mixer. A high performance D-MOS FET array for the 1st mixer stage is infused with a signal from the high-level C/N, high-drive Local Oscillator from the PLL unit. This new mixer reduces signal distortion through IF processing and provides a high-fidelity signal to the DSP unit.

AGC loop management using the DSP unit
The IC-7800 has two types of AGC loops. One of the AGC loops detects the AGC voltage at the BPF input in the DSP unit and feeds back to the 1st IF amplifier. This AGC loop prevents the saturation of the 1st IF amplifier from strong signals out of the BPF bandwidth, and improves the dynamic range against adjacent signals. The other AGC loop detects the AGC voltage at the digital IF filter output which has only passed the intended signal and draws the full potential from the digital IF filter. Combining the digital IF filter, manual notch, and the 1st IF stage, these are all controlled by the DSP unit. 110dB of ultra wide dynamic range in the receiver means the IF amplifier is distortion free from strong signals.

Two completely independent receiver circuits
The ultimate dual receiver performance is at your control; the receivers are completely independent all the way from the 4 antenna jacks, through the pre-selectors, DSP, signal detectors, front panel control, and right into the stereo headphone! The dual receiver allows you to receive two different bands simultaneously in different modes, with each receiver not causing any adverse affect to the other one. This true dual receiver takes your band hopping and contesting experience to the next level!

AGC Volume knob for fine tuning
In addition to the preset AGC time constants (slow, medium and fast), the manual AGC volume provides flexible detailed AGC tuning.

Digital IF filter
The digital IF filter has superior filtering performance and a distinguished shaping factor that demonstrates the power of 32-bit floating point DSP. The digital filter is completely free from deterioration due to deviations in band characteristics, temperature change, or mechanical vibration, all of which have likely been seen with analogue filters. The digital IF filter also provides excellent ripple characteristics and clean cut that have never been available with analogue filters. The filter shape is selectable from soft and sharp, depending on the purpose, operating band, band conditions, etc. It is also possible to set CW and SSB filter characteristics independently, and also select the filter shape while actually receiving a signal.

Manual notch filter with adjustable notch filter characteristics
The IC-7800’s manual notch filter shape can be set in 3-steps for the various receiving conditions. The manual notch filter has extremely sharp characteristics for processing in the DSP and provides tremendous performance for attenuation levels of more than 70dB in all shapes. The DSP-based manual notch provides stable performance and completely shuts off undesired beat signals without affecting AGC gain. In addition, an automatic notch filter tracks and wipes off the beat signal and RTTY interference.

Four 32-bit floating point DSP units and 24-bit AD/DA converters
The IC-7800 uses four pairs of 32-bit floating point DSP units and 24-bit AD/DA converters. One for the transmitter, one for each receiver, and the final one for the spectrum scope. The DSP units deliver the phenomenal performance of the digital signal processing. A powerful combination born of Icom’s analogue RF technology and experience.

200W output power at full duty cycle
The newly designed push-pull power MOS-FET amplifiers work with 48V DC and provide a powerful 200W of output power at full duty cycle with low IMD in all bands. The digital PSN modulator using a dedicated DSP unit consistently reproduces an outstanding signal-to-noise ratio, providing clean and clear transmission.

Ultra high stability OCXO unit
Your IC-7800 will be the reference point on the band with a standard stability of +/-0.05ppm! Even on the 6m band, that is less than 3Hz error from the Oven Controlled Crystal Oscillator! Also, a 10MHz reference frequency can be the input/output for external equipment.

RTTY /PSK31 operation without PC connection
The IC-7800 has a modulator and demodulator for the 2 major HF ham digital modes. Encode and decode of PSK31 and Baudot RTTY signals are possible by simply connecting a USB keyboard to the IC-7800. The twin peak audio filter improves RTTY reception. In addition, transmitted and received messages can be stored to the CF memory card and transferred to your PC.

Real time spectrum scope
With the dedicated DSP unit, the spectrum scope provides 80dB dynamic range of signal processing (the IC-756PROII is 60dB). The scope span can be set to +/-2.5 to +/-250kHz in 7 steps, providing wide band signal analysis. The monitor range can be set independently from the receiving frequency. You can monitor the band condition between the selected sweep edges, as well as sweep a selected band width centred on the receiving frequency in the scope screen.

In addition, the scope has many features including scope attenuator (10dB/20dB/30dB), 3 types of marker (Main band, Sub band, Transmit), Max hold function and Main- Sub band one touch switch. The mini scope function is convenient for continuous monitoring even while adjusting the set mode.

Microphone equaliser and adjustable transmit bandwidth
The built-in audio equaliser has the separate bass and treble adjustment for a total of 121 combinations, so you can tone your voice up or down as you want. In addition, the transmit bandwidth is selectable.

Icom IC-7800 HF/50MHz All Mode Transceiver

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

Icom IC7200 HF/50mhz Transceiver

IC7200

Icom IC7200 HF/50mhz Transceiver

The IC-7200 HF/50MHz transceiver maintains all the traditions of high quality engineering that you expect from Icom. Rugged in design and easy to operate, the IC-7200 utilises the latest digital functions including digital IF filter, twin PBT and manual notch filter which are normally associated with more expensive models. The IC-7200 is ideal for field operation or at home in your shack and is designed to be one of the most practical rigs available.

IF DSP
The IC-7200 utlises the latest IF DSP technology including digital IF filter, digital twin PBT and manual notch filter.

AGC loop management
Distortion and blocking from strong nearby signals are prevented by placing DSP functions inside the AGC loop. The AGC time constants are selectable from fast, slow and off for each operating mode.

Digital IF filter
The built-in digital filter allows you to flexibly select the filter width and shape from soft and sharp* and provides cutting edge filter characteristics. The twin peak filter for RTTY mode improves the frequency response and provides better readability in RTTY mode. * Filter shape is selectable for SSB and CW modes only.

Digital Twin PBT
Tailor your IF passband with the Twin PBT by electronically shifting the upper and lower edges of the IF filter. Depending on the use of the concentric knobs, you can either narrow the IF passband, or shift the entire passband to eliminate interfering signals.

Manual notch filter
The manual notch filter delivers more than 70dB of attenuation. Strong interfering tones will be eliminated without adversely affecting the AGC loop performance. On the bottom right of the front panel, a dedicated control knob adjusts the notch filter frequency.

Digital noise reduction
The digital noise reduction reduces background noise and improves the signal-to-noise ratio. The noise reduction level is adjustable in 16 steps which improves the readability of voice and data signals.

Digital noise blanker
The noise blanker reduces pulse-type noise such as engine ignition and sparking. The NB level and width (blanking duration) are adjustable in 101 steps.

High frequency stability
The IC-7200 has the built-in high stability crystal unit. It provides a very high frequency stability of ±0.5 ppm suitable for RTTY operation.

USB port for PC control The IC-7200 can be controlled by a PC through a USB port using the CI-V data format. In addition, modulator and received audio can also be transferred over the USB cable. By using appropriate external software, you can record incoming calls and/or transmit preprogrammed messages from your PC.

RF speech compressor
The digital RF speech compressor increases your average talk power in SSB mode. Even when the compression level is increased, the DSP controlled RF speech compressor provides low distortion audio.

CW mode operation
Full break-in, selectable CW carrier point (USB or LSB) and adjustable CW pitch are standard.

High stability transmitter
The DDS (Direct Digital Synthesizer) improves the C/N ratio and creates a noiseless, clean transmit signal.

100W output power
Using proven RD100HHF1 MOS FETs in a push-pull PA circuit and with a dual-fan cooling system, the IC-7200 provides a stable 100W output even during high duty cycle operation.

Tough construction against water intrusion
The buttons and knobs on the front panel have water resistant protection, providing a measure of protection against water intrusion. * IC-7200 is NOT waterproof.

Rugged design for outdoor use The IC-7200 has a rugged build, which means that the enjoyment of this rig is not limited to your shack.

Front mounted loud speaker
The front-mounted speaker provides clear audio sounds that can be clearly heard without impediment during operation.
IC-7200 Additional Features
RIT
VOX
LCD backlight (Hi/Lo/Off)
201 memory channels
Built-in 20dB attenuator
Preamplifier
Dial lock
Auto TS function
1Hz step tuning
Band stacking register
Built-in voice synthesizer
Auto notch filter
Power/SWR/ALC meter

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300