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LF: NEO-7M as a frequency source

To: [email protected]
Subject: LF: NEO-7M as a frequency source
From: DK7FC <[email protected]>
Date: Thu, 31 Jan 2019 16:22:55 +0100
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Hello dear GPS experts,

I'm still struggling with my NEO-7M and vlfrx-tools. Instead of the standard ucenter software i use my Raspi and vlfrx-tools to configure the module. Using the vtubx tool, i can configure the time pulse as expected, for example
vtubx -P 1e-1 -S /dev/ttyAMA0
leads to a blinking LED with 100 ms on-time. So the communication works fine.
However,with
vtubx -F 10 -S /dev/ttyAMA0 or vtubx -F 1,10e1 -vv -S /dev/ttyAMA0
the LED gets and stays dark, i.e. no frequency output.

Now i tried to use the old u-center software and there i can configure the TP output as expected to a frequency of say 20 Hz and there the LED is indeed blinking.

Does someone have tried to use vtubx and have some experience? What am i doing wrong?

73, Stefan


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