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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 should be
inserted in the coaxial transmission line between the transceiver and the tuner. The
tune mode on the transceiver is then energised (refer to the transceiver user
manual). 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 reflected
power should indicate a low value consistent with a VSWR of better than 2:1. If the
cover of the tuner is removed the PCB mounted 'tuned' LED should be illuminated.
Now select the lowest desired frequency on the transceiver 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 as 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' it’s 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 instantaneously retune to that frequency.
Summary of Contents for 2050
Page 31: ...31 of 285 then press the key ...
Page 99: ...99 of 285 then press key to save the new alias ...
Page 118: ...118 of 285 Upload pack See section Cloning programming from another transceiver ...
Page 224: ...224 of 285 Fitting the 2050 Into the 2040 Manpack Adaptor Removing the Battery Cartridge ...