<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><font face="HelveticaNeue" size="2" class="">Hi Norm, Liz and Graeme</font><div class=""><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div class=""><font face="HelveticaNeue" size="2" class="">Thank you for your comments and encouragement!</font></div><div class=""><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div class=""><font face="HelveticaNeue" size="2" class="">I don’t foresee any risks like transmitting loops but thought I’d just check with those who’ve played in this space already :) </font></div><div class=""><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div class=""><font face="HelveticaNeue" size="2" class="">Norm, it sounds like your setup is very similar to mine, currently Direwolf on a laptop computer. I’d like to move mine to a Pi and also implement a ‘full service’ as you did, if it proves valuable in my area.</font></div><div class=""><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div class=""><font face="HelveticaNeue" size="2" class="">Liz, that’s right, I’m in the Brunswick area which has some Digipeater coverage if I’m on the roof of my double story unit but I’ve not been able to get any packets to traverse the network from ground level.</font></div><div class=""><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div class=""><font face="HelveticaNeue" size="2" class="">Graeme, thanks for your point, too. I found that the APRS-IS code is open source and you can see the code that implements exactly what you describe - there can be multiple paths to stations via I-gates. So an RX only I-gate won’t restrict messages going back to a station if it’s been heard by other RX/TX I-gates. If you’re interested it’s on line 2467 here: <a href="https://github.com/hessu/aprsc/blob/f8824e85f7d67661bd90fbbf0929aa1a9c4a947a/src/filter.c" class="">https://github.com/hessu/aprsc/blob/f8824e85f7d67661bd90fbbf0929aa1a9c4a947a/src/filter.c</a></font></div><div class=""><div></div><div><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div><font face="HelveticaNeue" size="2" class="">Thanks again,</font></div><div><font face="HelveticaNeue" size="2" class=""><br class=""></font></div><div><font face="HelveticaNeue" size="2" class="">Brad</font></div><div><br class=""></div><div><br class=""><blockquote type="cite" class=""><div class="">On 27 Jan 2021, at 9:44 am, Norm McMillan <<a href="mailto:vk3xci@gmail.com" class="">vk3xci@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Brad,<div class="">Go for it, it's a lot of fun and that is what Ham radio is all about! The A correctly configured APRS network will take care of "loops" as you call them</div><div class=""><br class=""></div><div class="">I ran a Raspberry Pi Zero/Direwolf RX only iGate here in Mildura for quite some time, using an SDR dongle. I had some reliability issues and reverted to the "full service" version simply because I had it all set up. Uses an RPi 3B+, Xastir, TNC2 and a Motorola Transceiver. I'll eventually build it into a Pi0/Direwolf/Baofeng full service iGate, but meanwhile ,like Isaid, it's fun.</div><div class=""><br class=""></div><div class="">Don't worry about naysayers who tell us that rx only iGates Break the APRS messaging system... that's ancillary to the main objective of APRS. Any iGate is better than none and getting a posit on APRS-IS is the main purpose....</div><div class=""><br class=""></div><div class="">Have fun.<br clear="all" class=""><div class=""><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class=""><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">de Norm VK3XCI</div><div class="">Website: <a href="https://vk3xci.wordpress.com/" target="_blank" class="">https://vk3xci.wordpress.com/</a></div><div class="">Club site:<a href="http://sunradio.org.au/" target="_blank" class=""> http://sunradio.org.au/</a></div><div class=""><br class=""></div></div></div></div><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 26, 2021 at 5:29 PM Bradley Clayton <<a href="mailto:bradley@squarepolka.com" class="">bradley@squarepolka.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all,<br class="">
<br class="">
I hope you're well. <br class="">
<br class="">
I'm experimenting with Direwolf and the configuration for a receive only<br class="">
i-Gate - RF to Internet only. I wanted to reach out to ask<br class="">
if there are any concerns or considerations for this configuration? Just<br class="">
want to make sure this approach doesn't cause loops or any other adverse<br class="">
affects on the network?<br class="">
<br class="">
I hope this is an OK place to ask, and thanks in advance.<br class="">
<br class="">
Cheers,<br class="">
Bradley<br class="">
VK3LIT<br class="">
<br class="">
-- <br class="">
Bradley Clayton<br class="">
<a href="mailto:bradley@squarepolka.com" target="_blank" class="">bradley@squarepolka.com</a><br class="">
<a href="https://bradleyclayton.com/" rel="noreferrer" target="_blank" class="">https://bradleyclayton.com</a><br class="">
<a href="https://keybase.io/bradleyclayton" rel="noreferrer" target="_blank" class="">https://keybase.io/bradleyclayton</a><br class="">
-<br class="">
<br class="">
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</blockquote></div>
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