Barrett 2019, Руководство пользователя

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BARRETT 2019 AUTOMATIC TUNING HF ANTENNA
Testing the 2019 Automatic Tuning Mobile HF Antenna
To test the Barrett 2019 antenna, first select the lowest transmit frequency in the
transceiver and tap Tune . The display should show the word “Tuning” for a few
seconds, followed briefly by “Tune Passed” and an indication of the measured
VSWR (Voltage Standing Wave Ratio) value. Check this reading against the VSWR
meter.
Repeat the above test on the highest frequency in the transceiver and on a selec -
tion of frequencies in between at approximately 2 MHz intervals. If the tune
passes at all times, the 2019 antenna is working correctly.
The 2019 antenna tunes to maximise whip current, not minimise VSWR, but the
displayed VSWR value should generally be between 1.0:1 and 2.0:1.
However, if the display shows “Autotune Fail” accompanied by low pitched
beeps at any point, the 2019 antenna has failed to tune.
Check the following:
• Confirm the “Antenna Type” is selected in the transceiver’s Antenna Type
setting (see previous page).
• Check all cables are correctly connected
• Check the earth cable from the base of the 2019 antenna have a good con -
nection to the vehicle body or chassis (not directly to the battery terminal)
• Check that the whip fitted is not faulty or incorrect
• Move the vehicle if the 2019 antenna is close to any metal fences, buildings
etc.
If the problem cannot be resolved, contact your dealer or Barrett Service Depart -
ment for advice.