Yaesu FT-857D Operating Guide

The Spectrum Scope Monitor allows viewing of operating activity on frequencies above
and below your current operating frequency in the VFO mode, or viewing of memory chan-
nel activity on the current memory group when in the Memory mode. When the Spectrum
Scope Monitor is activated, the display indicates the relative signal strength on channels
immediately adjacent to the current operating frequency.

Using the Spectrum Scope

1. Set the transceiver to the VFO mode in the desired band, or within the desired memory

group.

2. Press the [FUNC] key momentarily, then rotate the SELECT knob, as needed, until

Multi Function Row “h” [SCOP, WID, STEP] appears on the display.

3. Press the [A](SCOP) key momentarily to engage the Spec-

trum Scope.

4. When the Spectrum Scope is in operation, the relative sig-

nal strength of stations on channels immediately adjacent
to the current frequency will be indicated on the display.

5. While the Spectrum Scope is activated in the VFO mode,

press the [B](WID) key to change the visible bandwidth. Available selections are ±10
(default), ±15, and ±63 channels. Press the [C](STEP) key to change the channel step
resolution. Available selections are shown bellow.

Channel Steps (kHz)

CW, SSB, DIG

1.0 / 2.5 / 5.0

AM

2.5 / 5.0 / 9.0 / 10.0 / 12.5 / 25.0

FM, PKT

5.0 / 6.25 / 10.0 / 12.5 / 15.0 / 20.0 / 25.0 / 50.0

•

While the Spectrum Scope is activated, press and hold in the [B] key for one second
to change the Sweep mode. This allows you to switch between “Single Sweep” and
“Continuous Sweep (default)” scanning modes.

•

When the Spectrum Scope mode is in the “Single Sweep” mode, press and hold in
the [A] key for one second to restart the Sweep.

•

While the Spectrum Scope is activated, press and hold in the [C] key for one second
to enable the “Meter Peak Hold” feature. This will show you the maximum signal
level recorded on a particular channel.

6. To disable the Spectrum Scope, press the [A](SCOP) key once more.