kopia lustrzana https://github.com/F5OEO/WsprryPi
10 ppm bias no longer needed since kernel sources have been fixed
rodzic
25508de451
commit
c617040521
5
BUILD
5
BUILD
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@ -1,6 +1,11 @@
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Install required packages:
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sudo apt-get install git g++ make grep mawk ntp
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Make sure you are using the latest kernel by updating your system. The latest
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kernel includes fixes wich improve NTP ppm measurement accuracy:
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sudo apt-get update
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sudo apt-get dist-upgrade
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Get code/ compile:
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rm -rf WsprryPi
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git clone https://github.com/JamesP6000/WsprryPi.git
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14
README
14
README
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@ -7,10 +7,16 @@ port to Antenna (and LPF), operates on LF, MF, HF and VHF bands from
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******
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Installation / update:
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******
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sudo apt-get install git
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git clone https://github.com/JamesP6000/WsprryPi.git
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cd WsprryPi
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make
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Make sure you are using the latest kernel by updating your system. The latest
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kernel includes fixes wich improve NTP ppm measurement accuracy:
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sudo apt-get update
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sudo apt-get dist-upgrade
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Download and compile code:
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sudo apt-get install git
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git clone https://github.com/JamesP6000/WsprryPi.git
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cd WsprryPi
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make
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See the accompanying BUILD file for more details.
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2
wspr.cpp
2
wspr.cpp
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@ -49,7 +49,7 @@ using namespace std;
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// Empirical PLLD clock frequency which minimizes the discrepancy between
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// the ntp measured ppm error and the ppm error measured with an external
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// frequency counter.
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#define F_PLLD_CLK (500005000.0)
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#define F_PLLD_CLK (500000000.0)
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// Empirical value for F_PWM_CLK that produces WSPR symbols that are 'close' to
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// 0.682s long. For some reason, despite the use of DMA, the load on the PI
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// affects the TX length of the symbols. However, the varying symbol length is
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