[App_rpt-users] tone sent in usbradio setting

[Joe Moskalski]

That's and excellent idea. I have used this method before to set deviation
before. One way you could do this easily without modifying the code of the
app_rpt module would simply be to create an audio with this constant tone
frequency and call it up with a macro command using the localplay function.

On Wed, Jun 21, 2017 at 11:33 PM, Pierre Martel <petem001 at gmail.com> wrote:

> Hi I am trying to find what is the frequency of the tone sent when we use
> the command radio tune txvoice??
>
> I am asking cause if it would be 1247 hz we could use the bessel null
> methode to adjust our tx to 3hz with just a simple rtl-sdr and sdr#
>
> the theory behind this is a bit complcated but at a certain frequency and
> level the carrier is completly or almost completly off.
>
> this can easily be seen on a spectrum analyzer. but our sdr# are like
> spectrum analyzer.
>
> so if we would want a 3khz deviation we need to send a 1247 hz signal and
> adjust the levels till the main carrier disapear on the spectrum analyzer.
>
> the maths are this 3000/2.405=1247
>
> you can see the theory at use here:
>
> https://www.youtube.com/watch?v=8IBOYoIV5m8
>
> So if there is a way to decide the tone we want we could use that methode
> to adjust or repeater deviation ( for the voice part at least)
>
> now if we wanted to adjust the deviation for the ctcss, this is another
> story. but could it be calculated by the voice level setting if sent on the
> same output?
>
> thanks for listening to my crazy idea ;-)
>
> By the way you can set a radio with a sound card attached to it a known
> level and use that as the signal to adjust the rxvoice level also. since we
> can set that with simple audio generating software available free online
>
>
>
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at lists.allstarlink.org
> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit http://lists.allstarlink.org/
> cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of
> the page. Enter your email address and press the "Unsubscribe or edit
> options button"
> You do not need a password to unsubscribe, you can do it via email
> confirmation. If you have trouble unsubscribing, please send a message to
> the list detailing the problem.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.keekles.org/pipermail/app_rpt-users/attachments/20170621/4eb08391/attachment.html>