20
Operating and installation instructions
RF-KIT Power Amplifier RF2K-S
6.5 Indication area Segment-Size
Indication area Segment-Size displays the usable segment width for a
stored setting in kHz. The term Segment-Size describes the frequency
range for which a stored setting can be used.
- The lower the transmit frequency, the narrower this frequency range
becomes.
- The higher the transmit frequency, the wider this frequency range beco-
mes.
Example:
The tuned frequency is f
0
= 3.675 MHz. For the 80 m band the Segment-
Size is 9 kHz. A tuner setting already determined for 3.678 MHz therefore
applies (rounded) for the frequency range
f
SeGMeNTCeNTeR
= 3.678 MHz ± f
SeGMeNT-SIZe
/2 = 3.674 - 3.682 MHz.
If you you leave f
SeGMeNTCeNTeR
= 3.678 MHz and tune your exciter to f
0
= 3.675
MHz, the deviation to f
SeGMeNTCeNTeR
will be displayed.
The deviation to f
SeGMeNTCeNTeR
is
-3 kHz
, as displayed in
(Dist:)
in the
screenshot above.
A valid tuning process will be confirmed by display of “
Match!“
If the deviation from the center of the currently used tuning segment
is more than f
SeGMeNTSIZe
/2, then the antenna tuner changes to the settings
stored for the next available tuning segment in tuning direction.
If the following segment has not yet been assigned to a setting, the color
of indication area Segment-Size changes from
green
to
yellow
.
From a difference of more than twice the segment size to the next seg-
ment with valid settings stored, the antenna tuner warns with the note:
“no match found!“
.
NOTE:
If the antenna tuner is activated, but no valid
tuning data is stored yet for the used frequency,
transmitting is not possible!
Therefore no transmission is possible without successful antenna tuning
process.
f
SeGMeNTCeNTeR
3,678
f
SeGMeNTLIMIT
3,674
f
SeGMeNTLIMIT
3,682
3,670
3,685
Tuning process
required
Setting available,
no tuning required
f
0
Tuning direction
Setting still acceptable,
tuning possible
Segment A
Segment B
Segment C
Segment D
Segment E
Segment F
Segment G
Segment H
Setting still acceptable,
tuning possible
•
Segment C and D
refer to the stored setting values of
Segment B.
•
Segment F and E
refer to the stored setting values of
Segment H.
•
To transmit at a frequency in
Segment E
a tuning process is necessary.
(At present, memory segmentation and querying the neighboring
segments is not yet possible. The function will be activated in one
of the next versions as part of an update).
