Calculating Proper Uhf Alignment Frequency; Calculating The Uhf Alignment Frequency For A Single Receive Frequency; Calculating The Uhf Alignment Frequency For Multiple Receive Frequencies - Motorola ASTRO 25 GTR 8000 Manual

5.9.2.1

Calculating Proper UHF Alignment Frequency

Use either Calculating The UHF Alignment Frequency For a Single Receive Frequency on page 163
Calculating the UHF Alignment Frequency for Multiple Receive Frequencies on page 163
the alignment frequency generated by the signal generator.
5.9.2.1.1

Calculating The UHF Alignment Frequency For a Single Receive Frequency

When and where to use: For base radio with a single receive frequency, calculate the frequency of
the alignment signal as follows:
Procedure:
1 From the site documentation or the Configuration/Service Software (CSS), determine the
receive frequency. Add 200 kHz.
2 If the frequency is 380–435 MHz, determine the alignment frequency as follows:
If frequency (from Step 1) is >431 MHz, alignment frequency = 431 MHz.
If frequency (from Step 1) is <382 MHz, alignment frequency = 382 MHz.
Otherwise, use actual frequency from Step 1.
3 If the frequency is 435–470 MHz, determine the alignment frequency as follows:
If the frequency (from Step 1) is >468 MHz, alignment frequency = 468 MHz.
If frequency (from Step 1) is <440 MHz, alignment frequency = 440 MHz.
Otherwise, use actual frequency from Step 1.
4 If the frequency is 470–524 MHz, determine the alignment frequency as follows:
If the frequency (from Step 1) is >518 MHz, alignment frequency = 518 MHz.
If frequency (from Step 1) is <472 MHz, alignment frequency = 472 MHz.
Otherwise, use actual frequency from Step 1.
5.9.2.1.2

Calculating the UHF Alignment Frequency for Multiple Receive Frequencies

When and where to use: For base radio with multiple receive frequencies, calculate the frequency of
the alignment signal as follows:
Procedure:
1 From the site documentation or the Configuration/Service Software (CSS), note the receive
frequency for each channel.
2 Calculate a midpoint frequency as follows:
F = (F + F
mid highest
3 Using F in place of the receive frequency, perform steps 1 through 4 from
mid
UHF Alignment Frequency For a Single Receive Frequency on page
) ÷ 2
lowest
Chapter 5: GTR 8000 Base Radio Optimization
Calculating The
163.
MN003286A01-E
or
to calculate
163