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--- site:rosston:224.2 [2018/01/12 22:11]
ke5gdb [220 CDM1550 Notes]
+++ site:rosston:224.2 [2018/01/12 22:19] (current)
ke5gdb [224.2 Technical Specifications]
@@ Line 1: / Line 1: @@
 ====== 224.2 Repeater ======
-The KE5GDB 224.2MHz (pl110.9) repeater likely has the largest coverage area of all 220 repeaters in Texas. The repeater consists of a pair of Motorola CDM1550 radios, a 100 watt Henry amplifier, CX-333 antenna, and a Raspberry Pi running Allstar as a repeater controller. In addition, the Pi drives a Kenwood TM-V71a Remote Base.
+The KE5GDB 224.2MHz (pl110.9) repeater likely has the largest coverage area of all 220 repeaters in Texas with the antenna at 1500' AGL. The repeater consists of a pair of Motorola CDM1550 radios, a 100 watt Henry amplifier, CX-333 antenna, and a Raspberry Pi running Allstar as a repeater controller. In addition, the Pi drives a Kenwood TM-V71a Remote Base.
+{{:site:rosston:img_20170715_143302819_hdr.jpg?800|}}
 ===== 224.2 Technical Specifications =====
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 {{:site:rosston:img_20170715_143533093_hdr.jpg?800|}}
+{{:site:rosston:20170122_182358.jpg?800|}}
 ===== Temperature Sensors =====
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 {{:site:rosston:img_20170923_161650465.jpg?800|}}
+===== Remote Base =====
+A Kenwood TM-V71a is connected to the Raspberry Pi with a USB-RIM. In addition, an FTDL USB-Serial cable allows control from the Raspberry Pi. The TM-V71a is fed into a diplexer, which is then fed to a triplexer, then to the CX-333. The diplexer/triplexer arrangement allows the single antenna to drive all elements of the 220 repeater and the remote base.
+A Python script was written to allow full control of the TM-V71a from the command line. DTMF control is planned, but not yet implemented.
 ===== 220 CDM1550 Notes =====

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