Both H777 and H777S are analog radio, if make them can talk with each other, please keep same frequency and CTCSS/DCS in same channel. Let us detailedly study how to make Retevis talk with H777S?
Both H777 and H777S are analog radio, if make them can talk with each other, please keep same frequency and CTCSS/DCS in same channel. Let us detailedly study how to make Retevis talk with H777S?
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