When you set up your scanner to track a Type I system, you must choose a size code for each block. When you have chosen a size code for all 8 blocks, you will have
duplicated the fleet map for the system you are tracking. If you have chosen correctly, you will be able to track transmissions in that system.
Each size code defines the number of fleets, subfleets, and IDs each block has. For example, you can see in the following table that a size code of
Size | Fleets | Subfleets | IDs | Block |
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| Used |
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Reserved block for Type II IDs |
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128 | 4 | 16 | 1 | |
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16 | 8 | 64 | 1 | |
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8 | 8 | 128 | 1 | |
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1 | 16 | 512 | 1 | |
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64 | 4 | 32 | 1 | |
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32 | 8 | 32 | 1 | |
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32 | 4 | 64 | 1 | |
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16 | 4 | 128 | 1 | |
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8 | 4 | 256 | 1 | |
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4 | 8 | 256 | 1 | |
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2 | 16 | 256 | 1 | |
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1 | 16 | 1024 | 2 | |
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1 | 16 | 2048 | 4 | |
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1 | 16 | 4096 | 8 | |
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Each ID in the block is unique. The
The size codes selected by a Type I system designer de- pend on the specific needs of the system's users. Some organizations might want many subfleets with only a few radios each, while another organization might want only a few subfleets, with many radios each. To scan Type I
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