<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="h5">
<br>
<div class="m_-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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