[OZAPRS] APRS receiver setting

[Ray Wells]

David,

I've always worked on 4khz for packet work.

When you're setting it up, make sure that you're not driving the audio 
limiter/clipper hard enough to compress out the pre-emphasis. For 
6dB/octave the transmitted signal should have the high tone about twice 
the deviation of the low tone, say 4khz and 2khz. It's not quite twice 
because of the 2200/1200Hz ratio being less than twice.

Ray vk2tv

David Hopkins wrote:
> Gentlemen,
> I am setting up a couple of transceivers for the APRS system.
>
> What is the ideal deviation to set the transmitter to for this type 
> transmission, +/-? KHz
>
> David
>
> David G. Hopkins (VK4ZF)
> Tekproductions
> CAPALABA
> AUSTRALIA 
>
>
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