With the modem chip used it is rare that a "weak" or
"noisy" signal will get decoded. Is the audio
"packet" 9600, 1200, or speaker audio?
With 1200 baud packet you need to have de-emphasized (sp?) audio to the
modem (TNC). Speaker audio DOES have de-emphasis, as should a
"1200" baud port of the radio.
(FYI- 9600 had NO pre- or de- emphasis)
Just because you can HEAR a packet, does not mean the TNC can decode it.
The signal to noise radio need to have a LOT of signal, and VERY little
At 01:02 AM 9/10/2009, you wrote:
I've Tracker2 connected to a Nuvi350 and was wondering why sometime it
took a while before I could see some of the callsigns get into the
Favorite (after I did a delete all). So, I added an LCD display to my
Tracker2 yesterday and found out that most of the time, Tracker2
couldn't decode the packets (i.e. not displayed on the LCD) especially
the weak ones. Now I'm wondering what else I need to do .. Anyway, my
setup is .. Kenwood TMV71A/Data/BandB <-> Tracker2 with LCD
I brewed my own cable between the TMV71A and the Tracker2.. sending
packet out does not seem to be a problem. Is there anything in the
configuration that I need to do?