[OZAPRS] Doppler graph

[Mark Jessop]

Gpredict is expecting to talk to a Hamib rigctld daemon, and will likely be
unhappy if it does not get back the responses it expects.
So, to get frequency data from gpredict, you would need to write something
which emulates enough of rigctld to satisfy gpredict.

Here's a python script I just hacked up:
https://gist.github.com/darksidelemm/2a1fb385f6fc18566f3bcf29b4929053

Gpredict seems happy enough with it. It listens on port 4532 outputs data
as follows:
Marks-MacBook-Pro:Dev darkside$ python fake_rigctld.py
Connected by ('127.0.0.1', 49304)
2017-11-20T07:05:10.209830,145888809
2017-11-20T07:05:10.630798,145888810
2017-11-20T07:05:11.634510,145888812
2017-11-20T07:05:12.635496,145888813
... etc

73
Mark VK5QI

On Mon, Nov 20, 2017 at 5:06 PM, <vk4tec at tech-software.net> wrote:

> Downloading gpredict source code to debug
>
>
>
> A
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> *From:* OZAPRS [mailto:ozaprs-bounces at aprs.net.au] *On Behalf Of *Scott
> Evans
> *Sent:* Monday, 20 November 2017 4:34 PM
>
> *To:* Australian APRS Users <ozaprs at aprs.net.au>
> *Subject:* Re: [OZAPRS] Doppler graph
>
>
>
> Oops didn't clearly READ! 😖
>
>
>
> On Mon., 20 Nov. 2017, 17:29 , <vk4tec at tech-software.net> wrote:
>
> Only getting a few and then it bombs out
>
>
>
> A
>
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>
> Back to gpredict
>
> F  145893173
>
> Back to gpredict
>
> F  145893173
>
> Back to gpredict
>
> F  145893174
>
> Back to gpredict
>
> F  145893175
>
> Back to gpredict
>
> q
>
> Back to gpredict
>
>
>
>
>
> *From:* OZAPRS [mailto:ozaprs-bounces at aprs.net.au] *On Behalf Of *Scott
> Evans
> *Sent:* Monday, 20 November 2017 4:22 PM
> *To:* Australian APRS Users <ozaprs at aprs.net.au>
> *Subject:* Re: [OZAPRS] Doppler graph
>
>
>
> Gptedict already has Doppler correction support inbuilt? 🤔
>
>
>
> On Mon., 20 Nov. 2017, 17:04 , <vk4tec at tech-software.net> wrote:
>
> Hi Guys
>
>
>
> I am trying to graph doppler shift for some satellites
>
>
>
> Does anyone have perl or python code that would allow gpredict to connect
> and then I can log the freq and graph it
>
>
>
> Cheers
>
>
>
> Andrew VK4TEC
>
>
>
> http://www.tech-software.net/blog
>
>
>
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