Can you hear any digis responding to your packets? Do your packets cause your
fillings to fall out?
The most ignored and most important part of APRS is TX/RX levels. If it's not
an off the shelf APRS radio, Some assembly (setup) is required.
The OT2 is happy with .5vRMS to about 1volt RMS max. Most radios will provide a
ballpark level at 1/4 to about 1/3 volume. Speaker audio is better than
Discriminator audio.
The best straight forward discussion of layer 1, that won't cause your eyes to
glaze over, click below.
http://www.febo.com/packet/layer-one/receive.html
http://www.febo.com/packet/layer-one/transmit.html
Alan:-)
