Icom IC-775DSP [12/67] Function

Содержание

1 PANEL DESCRIPTION PASSBAND TUNING CONTROLS TWIN PBT p 28 Adjust the receiver s passband width of the 455 kHz and 9 MHz IF filters for the inner and outer controls respectively Set to the center positions when not in use Variable ranges 1 25 kHz in 10 Hz steps FILTER SWITCHES WIDE NAR 455k NAR9M p 31 Select the IF filters WIDE selects the wider IF filters for the 9 MHz and 455 kHz IF filters WIDE does not function in FM mode The switch conditions are memorized in each mode NAR 9M FUNCTION The PBT function electronically narrows the IF passband width to reject interference The PBT is especially effective in SSB operation and not available in FM operation NAR 455k WIDE MEDIUM 2nd IF NARROW j 1 WIDE 9 MHz IF filter NARROW 455 kHz IF filter Simplified example of the PBT function Low cut Center High cut TWIN PBT TWIN PBT TWIN PBT Filter switch condition and selected filters Filter switch WIDE 9M NAR 455k s WIDE 9M NAR 455k IS WIDE 9M NAR 455k WIDE 9M NAR 455k 2 1 2 1 i i 9 MHz IF filter 455 kHz IF filter WIDE WIDE WIDE MEDIUM MEDIUM WIDE MEDIUM MEDIUM MEDIUM NARROW NARROW MEDIUM NARROW NARROW WIDE 9M NAR 455k WIDE 9M NAR 455k WIDE 9M NAR 455k 9