page 41
MARK-V FT-1000MP Operating Manual
O
PERATION
R
ECEIVING
S
IGNAL
T
UNING
M
ETER
I
NDICATIONS
The MARK-V FT-1000MP incorporates 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.
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.
CW 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
.
RTTY/PKT TUNING
