[OZAPRS] New Proposed APRS Digi for Adelaide - ideas?
vk2tv at exemail.com.au
Tue Jul 24 10:05:19 AEST 2018
My first reply ended up private to Grant, so this is take two!
I was using a Tiny-2 with DCD option on 145.825 for aprs satellitesand
86 days ago (current uptime) I changed to an Odroid C1+ running
Direwolf, and I'm now decoding between two and three times the number of
satellitetransmisions, this using the same radio, a Kenwood TM-V71A. The
Raspberry Pi is also a suitable computer but I chose the Odroid because
it has a RTC on board and a battery backup option for it.
Direwolf does something a hardware TNC can't do, it compensates for
signals that are over or under deviated and signals with grossly
incorrect pre-emphasis. If you haven't already, have a read of A Better
Packet Demodulator on this site
I'm surprised Glenn didn't try to talk you into using Direwolf and an
(Hi to Glenn VK1XX, the XU4 is working fine with Armbian).
On 24/07/18 06:37, Grant Willis wrote:
> It has long been an idea of mine to see a high site digipeater on the
> top of the Adelaide Hills around Mt Lofty / Crafers / Summertown to
> provide broad area metro RF coverage. Adelaide has many I-Gates but
> the one RF digi we have for the Adelaide plains isn’t well sited for
> that role (VK5RHO) and coverage in the Western and inner SW/SE suburbs
> has been poor since VK5TTY lost it’s site a few years ago.
> An opportunity has now arisen to install a machine at the long time
> licensed but never activated (on APRS) VK5RSB site at Summertown using
> the VHF antennas that have now been installed for the temporary VK5RAD
> 2m repeater (while it’s tower was being refurbished).
> Thanks to Glen 1XX I have obtained a TAIT radio. I have also dug out
> of the old SAPUG stores the Tiny-2 TNC that used to run the VK5RAD
> ROSE node which has a DCD State Machine built in (allowing open mute
> However, before I glue the hardware together in a case, I would like
> some suggestions please on the following:
> 1)If I stick with the Tiny-2 TNC what EPROM software do people suggest
> is best for APRS these days? (version, download source etc please?)
> 2)If I don’t stick with the Tiny-2 (depends on how serviceable it is)
> what alternatives do people suggest for the digital side that are
> bulletproof and fit the KISS principle?
> The site will be a plain WIDE2-2 digipeater – no internet connectivity.
> Grant VK5GR
> OZAPRS mailing list
> OZAPRS at aprs.net.au
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