[aprssig] Amount of "padding" before and after data at 1200 baud?

[Jason KG4WSV]

On Fri, Jul 21, 2017 at 10:44 AM, Alan <wa4sca at gmail.com> wrote:

> In working with DSP rigs, not only is the internal latency significant, but in some cases not entirely reproducible.  That is, you can send a series of beacons, and the timing will vary from one to the next.

Is the latency between the high level software "send" and the actual
start of transmission, or somewhere else?  How are you measuring the
timing?  Is the "DSP" (I assume you mean a sound card rig) the
transmitter or receiver?

-Jason
kg4wsv