Yaesu FTDX101D Operation Manual

Also see for FTDX101D: Information for Customers Operating Information for Customers Operating Operation manual Technical supplement Manual

Contents

19R.FIL (Roofing Filter Switching)Displays the bandwidth of the currently selectedroofing filter.Switches the crystal roofing filters of 300Hz*,600Hz, 1.2kHz*, 3kHz, and 12 kHz that are in-stalled in this transceiver.Normally, filters are automatically switched de-pending on the operation mode, however the filtermay be changed according to the conditions orwhen an optional filter is installed.Roofing filters are be set indlependantly for eachoperation band.*300Hz & 1.2kHz roofing filter are optional.After touching [R. FIL], touch the desired filter.If the optional 300Hz and 1.2kHz filters are notinstalled, “300Hz” and “1.2kHz” will not be dis-played.AGC (Automatic Gain Control)Displays the currently selected AGC setting.The AGC system is designed to help compen-sate for fading and other propagation effects. TheAGC characteristics can be individually set foreach operating mode. The basic objective of AGCis to maintain a constant audio output level oncea certain minimum threshold of signal strength isachieved.After touching [AGC], touch the desired time con-stant.● AGC can be set for each operation band.● The “AUTO” selection mode selects the opti-mum receiver-recovery time for the receptionmode.Operating Mode AUTO AGC SelectionSSB / AM SLOWCW / FM / DATA-FM FASTRTTY / DATA-L / DATA-U MIDNormally, AGC is set to “AUTO”, which auto-matically selects the time constant according tothe received signal type, but when receiving aweak signal or when there is noise and fading,the AGC action may be changed according tothe reception condition at that time. Change thetime constant to make received signals mostaudibleSeveral aspects of AGC performance may beconfigured via the Menu. However, becauseAGC can have such a profound impact on over-all receiver performance, we generally do notrecommend any changes to the AGC Menu se-lections until you are thoroughly familiar with theperformance of the FTDX101D.