RE: Plotting APRS position data on a laptop without internet access
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From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of Natalie Rodriguez
Sent: 16 July 2013 17:01
Subject: Plotting APRS position data on a laptop without internet access
I am launching a high altitude balloon experiment and need help setting up a computer to plot the balloon’s position. I have a Byonics APRS transmitter flying on the balloon and on the ground I have a Kenwood TM-D710A radio for my ground station. I have the Kenwood radio plugged into my laptop and I am trying to figure out the APRSISCE program. I was not able to get the software to pick up the APRS packets the radio was receiving without an Internet connection, is this software Internet dependent? I am launching my balloon in the Mojave and won’t have internet access, but I need to track the balloon’s position, do you have any advice?
I wonder how you have that '710 connected to the laptop? I track myself in a similar manner using a Byonic's APRS transmitter/beacon and a laptop strictly by RF means, no internet connection.
I use the 'AGW' packet engine program that converts the laptop's sound card into a TNC to interpret the signals received by the receiver I use. Feed the audio from the receiver to the sound card, the AGW program converts it to something the APRSISCE program can use for displaying the beacon's position. That requires one audio cable from the radio's speaker jack to the sound card's 'mic' input on the laptop. There's a part of the AGW program that is for setting the audio levels but that's not too difficult (instructions included).
That's about the easiest method I've found for me. I do have a TM-D710 but use another receiver and laptop dedicated to the APRS tracking thingy. The '710 can do it just fine, but I have other uses for it. Hope that helps, and good luck.