New TRX- IC-7100, a look inside
New TRX- IC-7100, a look inside I have just purchased a new IC-7100 to replace the FT-857 and FT-897 all-band, all-mode TRX I had. The Yaesu TRX were good radios, but dated designs. The IC-7100 on the other hand is a very modern design and radical form with a separate touch screen controller. The IC7100 is a similar but different design to other modern Icom TRX such as the IC-7410 and IC-9100. All are software-defined radios, with all modulation and demodulation done in software/firmware in the DSP and codec chips. All other signal processing is also done in software. Analogue devices are used for amplifiers and mixers. Band, low-pass and roofing filtering is done with discrete components, but all signal filtering is done by the DSP. I will say more of the design, but for the moment I have some photos of the main unit's PCBs. The mechanical design is simple. The top board is the frontend for both Rx and Tx with most components of one side of the board mainly bec...