Double frequency.

[alfille]

When I ran on P1 1B I get a frequency on GP4 that is double the specified (and reported frequency). For instance, trying 20m the frequency should be 14097100+- but is actually 28194200.
And my TAPR filter filters it out.

When I specify 7048550 (half the frequency) GP4 actually is at 14097100 and the beacon works at 20m.

[JamesP6000]

That's very odd... Can you send me the actual command line you used?

James

[alfille]

Originally: ExecStart=wspr -r -s -o K1PHA FN42 20 20m (part of a systemd script) But then to test wspr -t 14097100 gave a doubled rate on pin 4 (measured with a HP 5432A frequency counter to the nearest Hz) and now I use # Seems to double the frequency # so use 20 meter 14097100 / 2 = 7048550 ExecStart=/usr/bin/wspr -r -s -o K1PHA FN42 20 7048550 0 0 0 0 Sucessfully (I added to extra pauses so as not to clutter up the airwaves)

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On Mon, Apr 10, 2017 at 6:18 PM, James Peroulas ***@***.***> wrote: That's very odd... Can you send me the actual command line you used? James — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAD3MfZMzY_4jKpMi6jYWIFQ7VPGmDESks5ruqrTgaJpZM4M3ho8> .

[JamesP6000]

I'm still not seeing this behavior... Can someone else confirm this? Are people receiving your transmissions on the double frequency?

JP

[alfille]

This is a Pi 1B. And yes, my beacon is seen in Belgium Venezuela Texas (from Boston). (This is set at 7MH read at 14MHz=20m).

It's a standard Raspbian setup, headless.