[OZAPRS] How to make a raspberry pi satgate for the ISS

[Jack Chomley]

I would take everything onboard that Mark has said, will save you lots of grief AND time ;-) 

73,

Jack VK4JRC




> On 19 Nov 2017, at 11:30, <vk4tec at tech-software.net> <vk4tec at tech-software.net> wrote:
> 
> Mark
>  
> Its good that stuff breaks that’s how you learn
>  
> A
>  
> From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Mark Jessop
> Sent: Sunday, 19 November 2017 11:26 AM
> To: Australian APRS Users <ozaprs at aprs.net.au>
> Subject: Re: [OZAPRS] How to make a raspberry pi satgate for the ISS
>  
> How about you just fix it, then *test* it thoroughly (i.e. on a fresh raspbian install), *then* release it, instead of releasing a half broken script.
>  
> Or, as i've mentioned before, just link to the existing Direwolf SDR+APRS guide, which covers off setting up an igate pretty well: https://github.com/wb2osz/direwolf/blob/master/doc/Raspberry-Pi-SDR-IGate.pdf
>  
> Also:
>  
> pi at satnogs:~ $ cd /
> pi at satnogs:/ $ sudo mkdir satgate
> pi at satnogs:/ $ cd satgate/
> pi at satnogs:/satgate $ git clone https://github.com/niofis/rtl-sdr.git
> fatal: could not create work tree dir 'rtl-sdr': Permission denied
>  
>  
> - QI
>  
> On Sun, Nov 19, 2017 at 11:47 AM, <vk4tec at tech-software.net> wrote:
> Refresh often
>  
> 😉
>  
> From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of vk4tec at tech-software.net
> Sent: Sunday, 19 November 2017 11:14 AM
> 
> To: 'Australian APRS Users' <ozaprs at aprs.net.au>
> Subject: Re: [OZAPRS] How to make a raspberry pi satgate for the ISS
>  
> Work in progress
>  
> The script is changing
>  
> Testing now
>  
> From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Mark Jessop
> Sent: Sunday, 19 November 2017 11:12 AM
> To: Australian APRS Users <ozaprs at aprs.net.au>
> Subject: Re: [OZAPRS] How to make a raspberry pi satgate for the ISS
>  
> OK, a few points:
>  
> - You can't run what you have linked as a script, it has numerous syntax errors and will break. It's a guide.
>  
> - Why are you compiling the rtl_sdr utils from source (and not even the actual mainline repository, which is at [1]), only to over-write it with the version in the raspbian repository later on in the 'script'? If the aim of compiling from source is to obtain the latest bias-tee additions, then neither of these will work. If you're going to compile from source, compile from the mainline repository please. The rtl-sdr package in Raspbian Stretch is out of date, and won't be much help either.
>  
> - If you follow the rtl-sdr compilation instructions at [2], it uses a build flag which makes all the module blacklisting steps further down the guide irrelevant. 
>  
> - You are missing dependencies for direwolf (mainly libasound2-dev). How about just linking to the 'official' direwolf install guide at [3], which covers installation of direwolf on a Raspberry Pi pretty thoroughly. 
>  
> - The 'make install-rpi' line for direwolf bombs out on a headless Raspbian install, as the ~/Desktop directory does not exist. If you mkdir ~/Desktop and then run 'make install-rpi' it works.
>  
> - I don't know what you're trying to achieve with all the copy/move lines. Just edit ~/sdr.conf directly (as the 'pi' user, not as root!!!!!).
>  
> - At the end, your script goes and runs direwolf, without information about how to start it up automatically (which would be useful for an igate!). Once again, the official documentation [3] (page 28) has information on how to set this up, as does [2].
>  
> Realistically the existing direwolf APRS+SDR guide [2] contains all the instructions needed to set up a SDR iGate. The only difference is the receive frequency. Why not just link to that instead? 
>  
> 73
> Mark VK5QI
>  
> [1] git://git.osmocom.org/rtl-sdr.git
> [2] https://github.com/wb2osz/direwolf/blob/master/doc/Raspberry-Pi-SDR-IGate.pdf
> [3] https://github.com/wb2osz/direwolf/blob/master/doc/Raspberry-Pi-APRS.pdf
>  
>  
> On Sun, Nov 19, 2017 at 10:35 AM, <vk4tec at tech-software.net> wrote:
> Hello
>  
> I have made a script to install and make a raspberry pi satgate for the space station.
>  
> Raspberry pi, rtl dongle and antenna are required
>  
> http://tech-software.net/satgate/satgate.htm
>  
> Andrew VK4TEC
> 
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