[aprssig] DTMF on HF?

Ray Wells vk2tv at exemail.com.au
Fri Jan 10 17:56:38 EST 2014

On 11/01/14 04:10, Robert Bruninga wrote:
> Has anyone had any experience with any success at DTMF working on HF 
> for some rudimentary commands?
> I know tuning is critical as well as inter-tone noise must be way down.
> Just thought maybe someone has experimented with it.
> Bob, WB4aPR
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> aprssig at tapr.org
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No experience, but if it was used on an active aprs frequency the radio 
would already be critically tuned.


Ray vk2tv

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