BASIC OPERATION
b
Supplements
When the forced transmission signal line is not connected:
Because the exciter will not automatically enter transmission mode, take the following steps
to implement tuning:
1.
Manually key the exciter to begin transmission. The
JRL-2000F
measures the operating
frequency.
2.
Stop transmission from the exciter.
3.
Transmit again and remain in transmission mode until the automatic tuning operation
is complete. Matching data will be written into memory for the selected band or
sub-
band.
When
Po
is indicated in the central display:
This indicates that there is not sufficient input power to perform the automatic tuning operation.
Adust the power output control of the exciter to increase the drive level. The
JRL-2000F
can not perform automatic tuning unless there is more than approximately
20 W
input.
When
A7
is indicated in the central display:
This indicates that automatic tuning has not been completed successfully. Check all antenna
connections, antenna
VSWR
and exciter connections and try again.
When the color of the
MATCH
LED
is orange:
This indicates that antenna matching has not been completed successfully. Check all antenna
connections, antenna
VSWR
and exciter connections and try again.
This completes the automatic tuning procudure. The
JRL-2000F
can be used in any band
that has been tuned by the above operation. By implementing the automatic tuning operation
in advance for all frequency bands and sub-bands that you plan to use, antenna switching
and matching data can be quickly recalled for instant
QSY.
Important
In some countries, including the United States of America, linear amplifier operation
above
24
MHz is not possible. However, the
JRL-2000F
can be used as an
antenna tuner in any band.
The
VSWR
value of the antenna itself is displayed on the
VSWR
meter on the
front panel. This reading will not change even after tuning has been completed.
If the antenna
VSWR
is too high, it may cause radio interference.
During automatic tuning the power amp is switched
OFF
even if the
switch
is set
ON.
After tuning, the switch will automatically return to its previous
state.
The antenna tuner is bypassed during receive operat~on.
.
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