[Repeater-Builder] Simplex repeater

[IF YOUR NICE I MAY TELL YOU]

Hi all what do I need to put together a simplex repeater without using
a recording device.I would like to hook up 2 radios and
antennas.Thanks for any input.KC0USN 73's  Do simplex repeaters
require Frequency cordinater to give frequency or can you pick your own?