[OZAPRS] TNC capture range

[Owen Duffy]

On 11/10/2014 15:23, Ian Bennett wrote:
> Group,
> 	Been googling around a fair bit but don't seem to be able to find the capture range of typical TNCs
> used as a HF Igate.
> 	I'm curious as to how accurate a transmitter's frequency has to be. Put another way, how much can
> it drift and still have posits decoded??
That depends on the receiver implementation.

If it is a TNC as you mention and using a telephone modem chip,
tolerance might be 10-20Hz or so for good performance. For DSP multiple
parallel rx technologies, it depends on the number of receivers, but
100Hz is not impractical.

Owen