This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
site:rosston:224.2 [2018/01/12 22:15] ke5gdb [224.2 Repeater] |
site:rosston:224.2 [2018/01/12 22:19] (current) ke5gdb [224.2 Technical Specifications] |
||
---|---|---|---|
Line 3: | Line 3: | ||
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. | 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 ===== | ===== 224.2 Technical Specifications ===== | ||
Line 18: | Line 19: | ||
{{:site:rosston:img_20170715_143533093_hdr.jpg?800|}} | {{:site:rosston:img_20170715_143533093_hdr.jpg?800|}} | ||
+ | |||
+ | {{:site:rosston:20170122_182358.jpg?800|}} | ||
===== Temperature Sensors ===== | ===== Temperature Sensors ===== | ||
Line 23: | Line 26: | ||
{{:site:rosston:img_20170923_161650465.jpg?800|}} | {{: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 ===== | ===== 220 CDM1550 Notes ===== |