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Re: [Discuss-gnuradio] How to hold a values from file source
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From: |
Marcus D. Leech |
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Subject: |
Re: [Discuss-gnuradio] How to hold a values from file source |
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Date: |
Wed, 27 Oct 2010 13:23:00 -0400 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Thunderbird/3.0.7 |
On 10/27/2010 11:58 AM, Josh Blum wrote:
> Ok. I see the pattern...
>
> '0' = 00110000
>
> '1' = 00110001
>
> Your plots look like one of the above patterns repeating. You
> literally put the ascii characters '1' and '0' into a binary file.
> *facepalm*
>
> -josh
>
Good sleuthing, Josh.
Looking at the flow-graph, it seems like the modulation "bits" are
running at the same rate as the carrier frequency, which won't work--not
even slightly.
Generally in AM/ASK, the modulation frequency is *much* lower than the
carrier frequency, my gut is that you'd need at least several cycles
of carrier between each bit.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org