Cellphone-Mate CM400 Black 50 Ft Ultra-Low-Loss 400 Coaxial Coax Cable CM001-50 Brand New Cellphone-Mate CM400 Black 50 Ft Ultra-Low-Loss -400 Coaxial Coax Cable (CM001-50). For indoor / outdoor use. Connects fiber glass antenna or dome antenna to amplifier, splitter or tap. Ultra Low Loss. N-Male / N-Male Connectors on both ends.