Vertex Standard FT-1000MP manual Expanded Tuning Scale, AM Synchronous Tuning

OPERATION

RECEIVING

EXPANDED TUNING SCALE

The bargraph segment meter above the MAIN VFO- A frequency display serves as a triple mode enhanced tuning scale. By default, it displays relative Clarifier off- set, and as you rotate the CLAR knob (either Rx or Tx Clarifier), the normally centered marker segment moves left or right, indicating the relative displaced (“clarified”) Rx or Tx frequency from the original. Be sure to see page 49 for more details on Clarifier op- eration.

When the VRF feature is engaged, the segments briefly indicate the peak position for the narrow band- pass “preselector” when you are turning the VRF/MEM CH knob. Be sure to see page 44 for more details on VRF operation.

Alternately, you can have the segments expand outwardly as you tune either direction from the nearest displayed frequency. This lets you view tuning incre- ments smaller than 10 Hz (the maximum display reso- lution).

The rate and distance of segment displacement in either mode are proportional to the selected tuning step size and depend on whether or not the [FAST] button is engaged. The tuning meter mode is selected by menu selection 3-2.

AM SYNCHRONOUS TUNING

Audio distortion of AM stations due to carrier fading is common. Synchronous tuning reduces this phenom- enon by receiving the station in “LSB” while re-inject- ing an unfading carrier. The benefit of this technique is that the re-injected carrier is phase-locked to carrier of the original station, reducing the effects of fading and improving signal fidelity over that of conventional AM detection.

To activate AM synchronous detection, press the [AM] button twice (so the green LED inside the button blinks). The tuning meter format changes to that be- low. Slowly tune across the signal until the lone center segment appears (see below).

AM SYNCHRONOUS TUNING

SUB-DISPLAY MODE SELECTION

The small window to the right of the main frequency display can contain several different readouts, selected by menu selection 3-5.

These include:

Clarifire - Displays “clari- fied” frequency as offset from the original frequency.

Channel Freq. - Displays the operating frequency con- tained in the current memory channel providing “What if?” information while you are operating on a VFO.

Offset - Displays the fre- quency difference between the Main VFO and Sub VFO fre- quencies.

A1 (CW) Pitch - Displays the current CW pitch setting.

Whichever selection you choose, if you activate the Clarifier during operation, its display will over-ride any other (non-Clarifier) settings you may have set via menu selection 3-5.

page 42 MARK-V FT-1000MP Operating Manual