The Barnhart Multi-Band Multi-Mode Remote Base UHF Repeater
The Multi-Band Remote Base UHF Repeater System is a Vertex VXR-5000 Repeater connected to a Yaesu FT-857D transceiver. The interface controller is mounted inside the VXR-5000.
The FT-857D radio has 200 channels that the user can select from their radio using DTMF tones.
The VXR-5000 repeater is mounted at top.
The FT-857D is mounted next, and then the Astron 35 amp power supply for the FT-857D.
Then the antenna panel is mounted last. A Yaesu HF watt meter is mounted on the antenna connector panel, and a Yaesu HF watt meter for the 6 meter AM transmitter.
The repeater has battery backup, but the remote base will be down.
On the back side of the mounting rack, at the top, you can see the split RF pre-amps and small cavities feeding the Remote base repeater and the GRMS repeater. Also, on top of the repeater you can see the VHF/HF splitter feeding the FT-857D 2 meter input and the UHF repeater output feeding our Dual band antenna.
On the back side of the mounting rack, at the bottom, you can see the wet cell back-up batteries.
One battery backs up the Multi-Band Multi-Mode 443.725 repeater, and the other one backs up the GRMS repeater.
The 12 volt power connections on the GRMS repeater supplies the 6 meter link receiver, and the 6 meter AM transmitter. Both the UHF Vertex repeaters switch to 8 watts output on emergency power, and the FT-857D goes down, but the repeater stays on.