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You can do it with two basic radios and a few other parts:



  • Two radios
  • One duplexer
  • One antenna
  • One power supply
  • Coax (duh!)
  • A way to ID - use a computer interface or use the ID-O-Matic from hamgagets for $25.
  • A way to turn the repeater off - an internet IP controllable power strip will do.

That's all you really need for a basic repeater.  Keep in mind that if your repeater is going to be busy, the TX radio is going to need forced air, more heat sink and anything else you can think of to keep it cool.  The total cost doesn't have to be that great if you can find basic radios for a good price.