IFF codes are limited to which numbers?

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Multiple Choice

IFF codes are limited to which numbers?

Explanation:
IFF squawk codes are four-digit octal values, so each digit can only be 0 through 7. In octal notation, the digits range from 0 to 7, and you’ll see codes like 1200 or 4357 made entirely of those digits. That’s why the allowable range is 0–7. The other options would involve digits outside the octal set, which isn’t how these codes are defined.

IFF squawk codes are four-digit octal values, so each digit can only be 0 through 7. In octal notation, the digits range from 0 to 7, and you’ll see codes like 1200 or 4357 made entirely of those digits. That’s why the allowable range is 0–7. The other options would involve digits outside the octal set, which isn’t how these codes are defined.

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