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NOTE: ECCM channels 5,0,and 7 are programmed with codes - not discrete frequencies as for channels 1-4.

b. Enter the first code as in PROGRAMMING FREQUENCY steps a - d.

NOTE: The upper 2 (KHz) digits of the code determines the 5 MHz ECCM hand used by the signal. The right ones (MHz> digit and lower 3 (KHz) digits of the code determine part of the ramdom "HOPPING" pattern for ECCK transmission and reception on this channel

ECCM FREQUENCY BANDS <MHz):

30.000-34.975 35.000-39,975 40.000-44.975 45.000-49.975 50.000-54.975 55.000-59.975

60.000-54,975 65.000-69.975 70.000-74,975 75.000-79,975 30.000-84,975 85.000-89.975

a. In general, use of ECCM channels no differently from nan-ECCM channels. Remenber that ECCm is not operational in SCAN mode.

il) "MODE CONTROL POSTION.

a. Vhe radios in a network are set up in the same ECCM codes, they are compatible for ECCM communications in either QFFr TONE, or NOISE SQUELCH modes.

b. Minimum synchronizing information is transmitted when all network radio are set to NOISE or OFF SQUELCH modes.

c. When radios are set to TONE mode for ECCM operation, each keying synchronizes the network.

a. During ECCM operation, use this automatic scanning sequence to respon to non-ECCM calls.

b. Vhen set to an ECCM channel, the radio automatically scans a single clear (non-ECCM) channel.

c. Set to ECCM channel 5, the radio scans clear channel 1. Set to channel 6, it scans clear channel 2. Set to channel 7, it scans clear channel 3,

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