Signals such as heterodynes and AM carriers can be eliminated with automatic notch filter technology, making interference from RF sources such as beat signals and RTTY signals a thing of the past. There filter memories allow you to change filter settings instantly, a great help during contesting or other high-rate operating.Īfter "building your own" digital IF filter, you can use digital twin Passband Tuning (PBT) to shift and narrow the IF passband until the interference is gone and you can clearly hear that weak signal. You can quickly choose bandwidth, shape factor and center frequency, so that you can work that rare DX station while your competition's still tweaking their transceiver controls. The IC-7600 DSP allows you to "build your own" digital IF filter. The 3kHz filter is especially effective in CW and SSB modes to eliminate overloading caused by strong signals just outside the passband. The IC-7600 has three built-in 1st IF filters ahead of the 1st IF amplifier stage. Three built-in 1st IF (roofing) filters, including 3kHz
This architecture prevents strong adjacent signals from "pumping" the AGC and allows maximum dynamic range in the DSP. The IC-7600 has dual AGC loops, one analog and one digital, both under DSP control. When compared to a typical triple-conversion system, the double conversion system is more difficult to implement but it dramatically reduces signal distortion and provides a high-fidelity RF signal to the DSP processor. The IC-7600 employs a double conversion superheterodyne system which has an image rejection mixer for the 2nd mixer stage. Even a weak signal adjacent to strong signals is clearly received by the IC-7600.ĭouble conversion superheterodyne dramatically improves inband IMD Icom's long years of analog RF circuit experience combined with the latest digital technology results in an astonishing 104dB receiver dynamic range and +30dBm IP3 in the HF bands without sacrificing receiver sensitivity. These processors give the IC-7600 high performance comparable to our top-of-the-line IC-7800 and IC-7700, thanks to the combination of dual DSP and our analog RF design expertise.ġ04dB dynamic range and +30dBm third-order intercept point (IP3) Two separate 32-bit DSP units power the transmitter/receiver and spectrum scope.
Since the IC-756 Series was first released in 1996, it has earned a formidable reputation as the mainstream of 100W HF transceivers. Simultaneously receive two signals in the same band with Dualwatch.ĭigital voice memory records incoming signal and will immediately replay audioīuilt-in high-speed automatic antenna tuner Two Tx/Rx antenna connectors with automatic antenna selector.Įasy connections for flash memory drives and PCsīuilt-in PSK and RTTY operation with a USB keyboard – PC not required Three built-in 1st IF (roofing) filters: 3, 6, 15kHzĥ.8-inch ultra-wide TFT display with LED backlighting Improved inband IMD using double conversion superheterondyne system Separate DSP units for the transmitter/receiver and spectrum scope Get the performance advantage based on the latest DSP technologies