>>>AA6YQ comments below
--- In [email protected], John Becker <[EMAIL PROTECTED]> wrote:
>
> I knew that.
> So is my AEA TNC that I got back in 1988....
>
> Bottom line - there is *NO* computer running software with out
> any hardware (TNC) that will do the same right?
>>>Wrong. SCAMP, a protocol that employs ARQ to attain reliable
delivery, was implemented on a Windows PC with a soundcard rather
than an outboard TNC. SCAMP was specifically design to tolerate the
long delays caused by the lack of pre-emptive scheduling in Windows.
>>>Could Pactor-3 be implemented on a modern PC with a soundcard?
Yes, but not with Windows as the operating system. Has anyone done
this? No -- it would make no economic sense when you can buy a TNC
for $300.
>>>Most TNCs are based on microprocessors, some augmented by digital
signal processors; both of these devices are controlled by software.
While such systems certainly incorporate hardware, they are not
hardware-only solutions.
73,
Dave, AA6YQ
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