It is a 5 tone identificator and i need to build it in FT23 for identification
from other users...
That's why i need those generator

Josh Koffman wrote:

> Milan,
> Just so you know, that isn't a "roger beep" that you are hearing. If I
> am correct, what you are hearing is a trunked repeater go ahead tone. It
> occurs when the radio queries the trunked controller, and is assigned a
> frequency. The radio then gives you the go ahead tone so you know you
> have a frequency, and that you are now able to transmit. It seems
> somewhat pointless to me to put this in a non trunked radio - what
> purpose can it serve? My understanding was always that a real "roger
> beep" is a tone that is transmitted when you release the PTT, so that
> those listening are sure you are done transmitting and that you aren't
> being blocked out by interferance, etc. In my experiance this tone is
> usually generated by a repeater not the radio. In any case, if you do
> decide to construct this, be careful, as I'm sure no radio manufacturer
> will be too pleased if you modify a radio then try to make them fix it
> :)
>
> Josh Koffman
> joshy@mb.sympatico.ca
> VE4KAJ
>
> "Milan Pavlica (YU7AEC)" wrote:
> >
> > Hi!
> > I would like to build ROGER BEEP (those five tones which MOTOROLA radios
> > generate every time whem transmit is pressed), BUT, i do not have a lot
> > of space in my HT radio to put it in so i would like to build it with
> > PIC..(For amateurs info, that i would like to put it in place for CTCSS
> > enc/dec unit)
> > I need some small PIC - i need only one input and two outputs...
> > Any better idea, or can you help me with choice of PIC??
> > THANKS!

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