The Icom IC-7800 is clearly one the most advanced amateur radio ever developed. It utilizes four separate 32-bit floating point DSP chips, has a 7-inch wide TFT display, built in RTTY/PSK31 receive and transmit plus compact flash technology.
The Icom IC-7800 covers the HF ham bands plus 6 meters (receive from 30 kHz – 60 MHz). The high resolution 7 inch TFT color LCD display provides more operating information than you’ve ever had before, including a spectrum scope.
You can download the manual for the IC-7800 here.
IC-7800 Instruction Manual.pdf
IC-7800 Pre-release Manual.pdf
IC-7800 Service Manual.pdf
IC-7800 Users Manual Ver 1.1.pdf
IC-7800_adj_proced_Schematic.pdf
IC-7800_adj_proced_schematic.pdf
IC-7800_Adjust Procedures.pdf
IC-7800_IMdiff_V120E.pdf

