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BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Electrical Checkout
After mechanical installation is complete, select the highest frequency to be
used on the Transceiver. A directional watt-meter such as a Bird model 43 may
be inserted in the coaxial transmission line between the Transceiver and the
tuner, although the internal metering of the Barrett 4050 Transceiver is ade-
quate. The tune mode on the Transceiver is then energised. Upon application
of RF energy, the tuner should start to tune, indicated by the ‘clattering’ of
the tuner relays. After a few seconds the relay noise will cease, the Transceiver
should indicate a successful tune and the watt-meter, and front panel indica-
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VSWR of better than 2:1. Now select the lowest desired frequency on the Trans-
ceiver and repeat the above procedure. The result should be the same, except
that the tune cycle may take somewhat longer. If the above procedure does not
give the results indicated, check that the antenna length and connections are
correct and re-check all ground (earth) connections.
Note: When received, the Barrett 911 automatic antenna tuner memory system will
usually not have any pre-stored tuning information appropriate to your installation.
To allow the 911 to ‘learn’ its tuning information, simply proceed from one channel
to the next allowing the normal tune cycle to take place. Each successful tune is
‘memorised’ so that when that channel is re-selected the tuner will almost instanta-
neously retune to that frequency.
Содержание 4050 HF SDR
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