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Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 194, Issue 3


From: Jim White
Subject: Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 194, Issue 3
Date: Tue, 4 Dec 2018 10:15:50 -0700
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.2

Very new to GNURadio here...

Is there a block available that will display an eye pattern for digital modulation for a GMSK or FM receiver?  I'm using a USRP B200 and have built a couple of simple flows for it including a spectrum analyzer.  I'm looking for something that will show the eye pattern.

Also hoping for a block that will calculate the time of closest approach from the Doppler curve after listening to and recording a satellite pass.  This is about finding the TCA then matching it to calculated TCAs provided by tracking programs. The objective is to match observed TCA to TCAs from several sets of keps to match them up and determine which set of keps is the satellite we are working with.

Jim


On 12/4/2018 10:00 AM, address@hidden wrote:
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Today's Topics:

    1. Fwd: [hamsci-swstation] A Little Fun with Digital RF
       (Michelle Thompson)
    2. Re: SDR for beginners (if not quite "dummies") (Bruce Ferrell)
    3. Call for Participation FOSDEM & pre-FOSDEM Hackfest (Andrej Rode)
    4. Looking for other users of the XTRX SDR (Markus Wirsing)
    5. Re: Looking for other users of the XTRX SDR (Matthias Br?ndli)
    6. Re: Looking for other users of the XTRX SDR (Markus Wirsing)


----------------------------------------------------------------------

Message: 1
Date: Mon, 3 Dec 2018 16:05:20 -0800
From: Michelle Thompson <address@hidden>
To: GNURadio Discussion List <address@hidden>
Subject: [Discuss-gnuradio] Fwd: [hamsci-swstation] A Little Fun with
        Digital RF
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="utf-8"

I enjoyed reading this writeup from a GNU Radio user, and wanted to share
it.

-Michelle W5NYV




---------- Forwarded message ---------
From: Greg KF5N <address@hidden>
Date: Sun, Dec 2, 2018 at 5:01 PM
Subject: [hamsci-swstation] A Little Fun with Digital RF
To: hamsci-swstation <address@hidden>


I had a great time at the TAPR Conference in Albuquerque, and I was
especially intrigued by the Space Weather discussion in the Sunday seminar.

Nathaniel's description of "Digital RF" really got my attention, and I
decided I wanted to experiment with it.
That took some doing, because I had to get a receiver and come up to speed
on GNU Radio.

So about 3 months later playing with radios, computers, and software here
is a report on my experiments:

https://github.com/Greg-R/explore_digital_rf/blob/master/docs/explore_digital_rf.pdf

The top of the repository is here:

https://github.com/Greg-R/explore_digital_rf

I want to do more experimenting using HF band signals.  Unfortunately I am
in a hostile RF environment.
I've got my hands on a broadband loop antenna, so getting that mounting and
working is next.
I hope I can pursue further experiments with the combination of GNU Radio
and Digital RF.
Cool stuff!

73 Greg KF5N




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