(5) From figure 24, it can be seen that three transmitter

frequencies are required for the A to M shots.

Thus, a minimum of

three frequencies are required in Block I for A to M. Continue the

analysis of the network, by counting Block II A to B frequencies

required in that direction, then count Block III requirements M to B

direction.

It is not necessary to determine the number of

frequencies in Blocks IV, V, and VI, because by counting the first

three blocks I, II, and III gives half the total number of

frequencies for the entire network. Example, in Block I a minimum of

three frequencies are required in the A-M direction.

Since these

frequencies will be assigned in pairs, a total of three frequencies

will be required in Block IV M-A the opposite direction.

The

requirements for the entire network conform with the listing below:

A-M ...... Block I ....... 3 frequencies.

A-B ...... Block II ...... 4 frequencies.

M-B ...... Block III ..... 4 frequencies.

M-A ...... Block IV ...... 3 frequencies.

B-A ...... Block V ....... 4 frequencies.

B-M ...... Block VI ...... 4 frequencies.

(6) Arrange the allocated frequencies in a numerical sequence,

then divide the frequencies into the six blocks (see chart below) to

include as many for each block required ((5) above).

On the ABM

plan, record the number of frequencies required in each block

starting with Block I to Block VI, respectively.

The following ABM

chart is an example of frequency division for requirements for figure

24.