<div dir="ltr">You'd be surprised with APRS messaging... there's parts of it that unless you go look you'd not find.<div><br></div><div>I thought it wasn't really used either and on the odd occasion sent some frivolous messages to CQCQCQ... when I got a reply APRS message from a German Amateur responding to my frivolous message I sort of stopped. There is more too it than meets the eye with iGates and having people gate to RF.</div><div><br></div><div>Messaging has it's place, like I've mentioned it's great for getting a message to someone to QSY. However doing this whilst driving is not explicitly listed in the road traffic act like a mobile, one can still be in trouble for driving with undue care, so I generally don't rock the boat.... Ditto on the Codan HF that has the same messaging features (*grin*).</div><div><br></div><div>73</div><div><br></div><div>Matthew</div><div>VK5ZM</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 8 November 2017 at 07:43, vk2tv <span dir="ltr"><<a href="mailto:vk2tv@exemail.com.au" target="_blank">vk2tv@exemail.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p><font face="Arial">Thanks Mathew,</font></p>
<p><font face="Arial">It's probably fair to say that Bob Bruninga's
constant push to use messaging has created more use of that
facility, resulting in failed paths due to rx-only Igates. There
seems to be minimal use of messaging in Oz based on my
observations.</font></p>
<p><font face="Arial">Ray vk2tv</font><br>
</p><div><div class="h5">
<br>
<div class="m_3647424629844268628moz-cite-prefix">On 07/11/17 16:44, Matthew Cook wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Yes RX iGates "can" break two-way messaging, but only in
certain circumstances. </div>
<div><br>
</div>
<div>We lost a very good Wide2 digi that covered the Adelaide
plains here in VK5 a while back and as a result there are now
black spots where APRS messaging no longer works.</div>
<div><br>
</div>
<div>To make it worse there is a RX only iGate that has a good
shot into that area, so it picks up the message fires it back
into APRS-IS only to reappear via our internet->rf
gateway... the issue is when you reply over RF it goes no
where. You've got to check the path to work out if it's worth
while. Turning that RX only iGate into a digi to aleviate
the issue is not a good idea since there are three WIDE2's
within cooeee of that area so the forth will do nothing but
create congestion. Catch 22. One day we may find a site to
replace the one we lost.</div>
<div><br>
</div>
<div>With respect to messaging many of us used to take advantage
of the QSY feature of our kenwoods (it tells you where other
stations are listening), so when the local repeater was busy I
could message others to QSY to an adjacent repeater without
breaking in and QSY-ing on the first repeater. With the holes
in the messaging network this has proven harder.</div>
<div><br>
</div>
<div>Anyway that is the only negative, we have a plethora of RX
only iGates around here now days, so it's interesting to see
how things change.</div>
<div><br>
</div>
<div>73</div>
<div><br>
</div>
<div>Matthew</div>
<div>VK5ZM</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 7 November 2017 at 15:32, vk2tv <span dir="ltr"><<a href="mailto:vk2tv@exemail.com.au" target="_blank">vk2tv@exemail.com.au</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p><font face="Arial">I'm not voting either way on rx only
igates. Some scribes on a US aprs list claim they
break messaging but what's the experience in the land
of Oz? I've personally found aprs messaging to be
useless; maybe others have used it with success. Just
asking out of curiosity.</font></p>
<p><font face="Arial">Ray vk2tv</font><br>
</p>
<div>
<div class="m_3647424629844268628h5"> <br>
<div class="m_3647424629844268628m_-9075363935007999026moz-cite-prefix">On
07/11/17 14:56, Matthew Cook wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Bob,
<div><br>
</div>
<div>There is nothing wrong with using a WIDE1-1
to fill in a local area, ideally you want your
fill-in digi to hit VK2HIM. The whole point of
a WIDE1-1, is to pick up local stations and
throw them up to the WIDE2's for distribution.
Once upon a time they were called RELAY's, until
the new WIDEx-n paradigm came into effect.</div>
<div><br>
</div>
<div>Your RX only iGate wont cause problems,
APRS-IS removes dupes server side *before*
distribution.</div>
<div><br>
</div>
<div>I'd +1 APRX as Scott has suggested, you might
like to search Owen VK1OD's website for
information on what he worked on previously.
There are some fixes to APRX's digi system that
are well worth the effort (<a href="https://github.com/owenduffy" target="_blank">https://github.com/owenduffy</a>)<wbr>.
I've been running a rPi RX Only iGate here in
VK5 for the past 5 or so years, they work well.</div>
<div><br>
</div>
<div>YMMV.</div>
<div><br>
</div>
<div>73</div>
<div><br>
</div>
<div>Matthew</div>
<div>VK5ZM</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 7 November 2017 at
13:28, Bob <span dir="ltr"><<a href="mailto:vk2byf@gmail.com" target="_blank">vk2byf@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
<br>
I'm Bob, VK2BYF, in Nowra<br>
<br>
Having lost our local digi some years ago and
our local ham population being very sparse we
seem to have dropped off the APRS map.<br>
<br>
My Tiny Track in my motor vehicle can't be
heard by the nearest Digi, VK2HIM near
Gerringong, until I gain some altitude.<br>
<br>
To get myself back on the APRS map I decided
to build a RX only Igate using a Raspberry Pi,
RTL-SDR & direwolf which seems to work ok.<br>
<br>
I experimented with a laptop running direwolf,
KA2DDO's YAAC and a FT-817 as a fill in digi,
Wide 1-1, which also seem to work ok.<br>
<br>
The next phase was going to be to setup a RF
digi using a cheap Chinese VHF/UHF Radio to
fill in the local RF hole we have here in the
Bomaderry, Nowra area.<br>
<br>
Knowing very little about APRS but the basics
and having been monitoring this forum for a
while, I have more questions than answers.<br>
<br>
A wide 1-1 to fill a local hole is that rite
or wrong?<br>
<br>
RX only IGate to fill a local RF hole, Is this
going to cause problems?<br>
<br>
Should I even bother to build a proper RF in
and out digi?<br>
<br>
What is the best configuration just to fill in
a local RF hole and get a fair section of the
Princes highway back on the map?<br>
<br>
BTW I prefer to run things on Linux. YAAC, a
java applications work very nicely on Linux.<br>
<br>
Regards Bob vk2byf<br>
<br>
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