DCARA Wiki

IP Addressing Scheme - Added rockledge tower

ke5gdb — 2022-03-19T23:13:44-05:00

IP Addressing Scheme With the increase of wide-area microwave networks supporting various VoIP and supplemental radio systems, it is necessary to standardize on an IP addressing scheme that can accommodate a switched network with multiple gateways.

GRLevelX APRS Placefile

ke5gdb — 2018-12-20T20:26:12-05:00

GRLevelX APRS Placefile To assist Net Control Station (NCS) operation in a severe weather event, a script was written that will plot APRS users in GRLevel3. This is open to all radio amateurs operating with Denton County. Spotters: Please add “!DCARES” to the comment text. “!SN!DCARES” will also work for those involved in Spotter Network.

Camera Pi - [Thermal Pi]

ke5gdb — 2018-11-10T21:29:50-05:00

Camera Pi A Raspberry Pi with a Pi Camera is mounted on a west-facing mast on the 1500' platform. Hardware The hardware consists of a Raspberry Pi 3 and a version 1 Pi Camera. The Pi and camera are mounted in a PVC electrical junction box with a hole drilled in the lid for the camera. The system is powered via Power Over Ethernet, and internally regulates the 24v POE to 5v for the Pi.

Repeater Linking

ke5gdb — 2018-06-12T08:54:09-05:00

Repeater Linking DCARA has 3 sites that all share a common control radio frequency. This allows us to link some repeaters in half-duplex, as the control link radios are a single Motorola CDM1550. All control radios operate on the same frequency, so linking a repeater to a control radio can be thought of as adding it to a group or pool.

Pi Cameras - [Pi Cameras]

ke5gdb — 2018-04-11T23:20:07-05:00

Pi Cameras There are several Raspberry Pi cameras scattered through the North Texas area on various repeater sites. These cameras are quite simple; they consist of a Raspberry Pi, a Pi Camera, and a POE “uninjector”. The Pi cameras are configured to run a shell script as a systemd service. This shell script will take a picture every 10 seconds using raspistill, and then sort it into three directories: hourly, daily, and weekly. Filenames are assigned img_%s.jpg where %s is the UNIX epoch time…

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ke5gdb — 2018-01-31T08:52:24-05:00

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