[SJRA-Members] Question about APRS

[Bob Beyer]

Thanks Rick. My bad. 

Sent from my iPhone

> On Feb 1, 2017, at 5:43 AM, RICK CONNOR <wc2k at comcast.net> wrote:
> 
> Tune that to 144.390 MHz, not 145.390.
>> On February 1, 2017 at 1:43 AM Bob Beyer <bob_beyer at verizon.net> wrote:
>> 
>> 
>> Hi Holden, 
>> That sounds like an interesting project.  I don't know how much
>> experimenting you've done with the subsystems already.  Although not rocket
>> science,  you'll need to get familiar with at least 3 different disciplines.
>> 
>> 
>> Namely:
>> - SDR in general and specifically the RTL dongle type receivers.
>> - RaspberryPi computer.  Cool but quirky little computers.
>> - APRS specifically and packet in general.
>> 
>> My suggestion would be for you to get as comfortable as possible with the
>> RasPi and RTL first if haven't already mastered them.  If you can, get it
>> going with some free software on a Windows computer such as HDSDR. Learn to
>> tune it to 145.39 and listen to what kind of APRS packet traffic you can
>> hear from your QTH and with your antenna.  I'm assuming by now that you know
>> what packet sounds like and will recognize it.
>> 
>> You may have already found these in your travels but I saw these web pages
>> (the first led me to the second).
>> 
>> http://www.rtl-sdr.com/setting-up-a-raspberry-pi-based-aprs-rx-igate-with-an
>> -rtl-sdr/
>> 
>> https://github.com/wb2osz/direwolf/blob/master/doc/Raspberry-Pi-SDR-IGate.pd
>> f
>> 
>> One thing I noticed is that you'll need to be comfortable on the RasPi
>> issuing commands via the Bash prompt in the shell (terminal) on the RasPi.
>> If you're Linux savvy you already know what this is.  If not, you can start
>> here:
>> 
>> https://learn.pimoroni.com/tutorial/bash/getting-started-with-bash
>> 
>> Once you become fluent on the RasPi and comfortable with the RTL dongle,
>> read a little about APRS so you'll understand it's approach to packet radio.
>> A general understanding of packet radio may be useful too:
>> 
>> https://www.tapr.org/pr_intro.html
>> 
>> Sorry I don't have any direct experience with what you're trying to
>> accomplish.  I just know from experience that trying to pull everything
>> together at once can be intimidating if you're still mastering the
>> components.
>> 
>> Good luck,
>> Bob Beyer - KE2D
>> 
>> 
>> 
>> -----Original Message-----
>> From: SJRA-Members [mailto:sjra-members-bounces at mailman.qth.net] On Behalf
>> Of Holden
>> Sent: Wednesday, February 01, 2017 1:51 AM
>> To: SJRA LIST
>> Subject: [SJRA-Members] Question about APRS
>> 
>> Dear all,
>> For the holidays I got a Raspberry Pi Linux computer. Since then, I have
>> found out what I want to do with it. I would like to turn it into an APRS
>> iGate relayer using a RTL SDR. I have followed numerous online directions on
>> how to do it but can't seem to figure it all out to work. I was wondering if
>> anyone had any experience or advice on this matter. Thank you very much for
>> your input.
>> 
>> Please private email me for more details...
>> 
>> Holden Correia-Fisher
>> KD2JPV
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