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There are also AR-3500 units with 4 pin microphone and 8 pin microphone jacks. Later units were made with the 8 pin jack. There are also AR-3500 units with 4 pin microphone and 8 pin microphone jacks. Later units were made with the 8 pin jack. == Disambiguation == Ranger 2950 and 2970 are NOT Clear Channel radios and have no relation to their product going by the same name "Ranger."