[OZAPRS] ISS Packet system down....

Andrew Rich vk4tec at tech-software.net
Tue Aug 1 16:03:41 AEST 2017


Very much depends on antenna altitude

I made a power over Ethernet box here as well

Still can't beat the hill installation 

I have noticed on occasion a dump1090 data break 

Never sorted it out


Sent from my iPhone

> On 1 Aug 2017, at 3:26 pm, vk2tv <vk2tv at exemail.com.au> wrote:
>> On 01/08/17 13:39, Liz wrote:
>> QTR Tue, 1 Aug 2017 12:50:29 +1000 vk2tv QTC
>>> I agree, but why the occasional reboot?
>>> My RPi with RTL dongle for ADS-B currently has an uptime of 125 days,
>>> and has been sending data to PlaneFinder for 70 days. Give the RPi a
>>> decent power supply and it will run for forever!
>>> My previous (and soon to be again) APRS satgate used a Pi driving a
>>> four-port FTDI USB/RS232 adaptor to drive an old TNC (Tiny 2) and the
>>> old Icom IC-2 handheld for 145.825. That arrangement ran for months
>>> without a reboot, and gave the old Icom a new purpose in life.
>>> Ray vk2tv
>> I don't know why. The USB hub and the computer are separately powered
>> off a reliable system, but sometimes the USB bus stops talking to the
>> receiver, and the software (dump1090, probably Ted Luis' ) sometimes
>> doesn't work. Remote maintenance usually means reboot. If I'm at home I
>> can fiddle with other methods including pulling the USB connectors
>> apart and resetting that way.
>> I contribute to planefinder, and they send an email if quiet for 6
>> hours which reminds me if I've missed the failure.
>> -+-+-+-+-+-+-+-+-+-+-+
>> Liz
> My hub is being used for the Pi but only as a convenient, temporary source of 5V. The Pi manages to handle the DTV stick without a hub. The final installation will see the Pi and DTV stick in a wxproof housing at the base of the antenna. I'll run ethernet and 12V to it, using a modified car 12V/5V adapter. I modified a unit by stripping out the electronics and installing a 1.5A Murata 3 terminal SMPS in its place. It's proven to be radio quiet ... so far! The software I'm using is dump1090-mutability. The only real USB issue I've had with the Pi was way back, with a wifi dongle losing connectivity to USB. I applied all the "fixes" at the time and it still happened so I installed a wifi-ethernet bridge at the Pi's remote location and fed ethernet to the Pi. Problem solved. The RPi must be responsible for more problems, fixes and questions in the history of amateur radio.
> You've answered an unasked question re PlaneFinder. I did wonder how they would react when I have the system down for relocation.
> Ray vk2tv
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