GTR 8000 Base Radio
Procedure Steps
1
From the site documentation or the CSS, note the receive frequency for each channel supported by the base
radio/receiver.
2
Calculate a midpoint frequency as follows:
F
mid
= (F
highest
+ F
lowest
) ÷ 2
3
Using F
mid
in place of the base radio receive frequency, perform steps 1 through 4 from
The UHF Alignment Frequency For a Single Receive Frequency, page 5-8
.
5.8.2.2 Preparing The Equipment For UHF Alignment
Procedure Steps
1
Make sure base radio/receiver (with preselector assembly) is installed in a functional station cage equipped
with a power supply module.
2
Using the torque driver and deep well socket, loosen the three tension nuts on the adjustment screws.
3
Detune the preselector by turning tuning screws
3
and
4
clockwise until they bottom out. Be careful not to apply
more than 3 in-lbs of torque to prevent warping preselector cover and housing.
4
See
.
5.8.2.3 UHF Tuning Procedure
See
for the location of the tuning screws and cavity probe holes.
When tuning for peak or dip, turn the tuning screw 1/2 turn past the peak or dip to verify that you have
obtained a true peak or dip. After ensuring you have found true peak or dip, turn the screw back to the
location of the original peak or dip.
5-10
6871022P86-A - November 2012
Содержание GTR 8000
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Страница 80: ...GTR 8000 Base Radio Figure 2 22 Base Radio Backplane Mounting Location 2 20 6871022P86 A November 2012 ...
Страница 177: ...5 8 1 3 VHF Tuning Procedure Figure 5 1 Preselector Tuning VHF 6871022P86 A November 2012 5 7 ...
Страница 181: ...5 8 2 3 UHF Tuning Procedure Figure 5 2 Preselect Tuning UHF 6871022P86 A November 2012 5 11 ...
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