[SJRA-Members] Question about APRS

[Ira Weinstein]

Hi Holden,

Can you describe where you are stuck?

Cheers,
Ira W2IRA

On Feb 1, 2017 07:53, "Holden" <hjcf0520 at gmail.com> wrote:

> Thank you all so much! Yes, I am familiar with APRS, APRS-IS, and AFSK
> modulation. I have used APRS for almost a year. Also, I have used the sdr
> dongle with SDR# and HDSDR on Windows. And finally, yes, I am not familiar
> with Linux as much as I should be for this project. I will visit the links
> you sent me and will check the dongle on Windows. I also agree, Pi's do
> have a few bugs but that's the compromise of open-source OS. Thank you
> everyone so much for your help!!
>
> Holden Correia-Fisher
> KD2JPV
>
> > 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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