Vertex Standard FT-1000MP manual Signal Tuning Meter Indications, CW Tuning, RTTY/PKT Tuning

OPERATION

RECEIVING

SIGNAL TUNING METER INDICATIONS

The MARK-VFT-1000MPincorporates several dis- play indications that make tuning stations a simple and accurate task:

Tuning Scale - When either CW, RTTY or PKT operation is selected, the tuning meter appears beneath the IC/SWR meter scale, as shown below.

In the CW mode, when you tune a signal near the center of the receiver passband, the boundary arrows light, and the upper signal strength segments increase as you slowly tune the VFO knob. The idea is to tune for maximum indication, and so that a lone center marker illuminates in the lower tuning meter (the bound- ary arrows turn off when the marker is centered). If you detune, the arrows illuminate, indicating that you need to re-center the marker.

CW TUNING

For RTTY and Packet, dual segments appear (rep- resenting the mark and space tones), and in this case optimum tuning is achieved when even balance and maximum separation between the dual segments oc- cur. The minimum separation between the segments is proportional to the mark and space tone shift (170 Hz, 425 Hz or 850 Hz). We will cover more about RTTY and Packet operation later.

RTTY/PKT TUNING

“Peak-Hold” Feature - During receive, the S-Meter segments respond instantaneously to the relative sig- nal strength (in S-Units) of stations. The meter “peak- hold” circuitry keeps the right-most bargraph segment on for a user-selectable time delay from 10 msec up to 2 seconds. The peak-hold feature is off by default, but you can enable it and select the desired delay time via menu function 3-7.

MARK-V FT-1000MP Operating Manual page 41