R.fil (Roofing Filter Switching); Agc (Automatic Gain Control) - Yaesu FTDX101MP Operation Manual

R.FIL (Roofing Filter Switching)

Displays the bandwidth of the currently selected
roofing 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 filter
may be changed according to the conditions or
when an optional filter is installed.
Roofing filters are to be set independently for
each operation band.
* 300Hz & 1.2kHz roofing filters are optional.
(300Hz is included on the MAIN side with the
FTDX101MP)
After touching [R. FIL], touch the desired filter.
If the optional 300Hz and 1.2kHz filters are not
installed, "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. The
AGC characteristics can be individually set for
each operating mode. The basic objective of AGC
is to maintain a constant audio output level once
a certain minimum threshold of signal strength is
achieved.
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 reception
mode.
Operating Mode
SSB / AM
CW / FM / DATA-FM
RTTY / PSK
DATA-L / DATA-U
Normally, AGC is set to "AUTO", which auto-
matically selects the time constant according to
the received signal type, but when receiving a
weak signal or when there is noise and fading,
the AGC action may be changed according to
the reception condition at that time. Change the
time constant to make received signals most
audible
Several aspects of AGC performance may be
configured via the Menu. However, because
AGC can have such a profound impact on over-
all receiver performance, we generally do not
recommend any changes to the AGC Menu se-
lections until you are thoroughly familiar with the
performance of the FTDX101.
AUTO AGC Selection
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