![planeplotter udp client setup for input planeplotter udp client setup for input](https://www.rtl-sdr.com/wp-content/uploads/2013/04/PlanePlotterPlanesWindow.png)
The same author has several other programs like modesmixer2, and modesdeco2 used by many people here. It will decode multiple frequencies at once, as long as they are within the approx 2 MHz bandwidth limitation of the RTL devices. There are several newer ways of decoding ACARS directly using one of the inexpensive RTL dongles and then feeding that data direct to PP. Scanning for ACARS can work, but usually not reliably. You would still be limited to mainly one frequency. If you have a spare radio or scanner around that receives airband you could just park it on an ACARS frequency and then feed the audio direct from the headphone jack to the computer input jack. It does not require a fancy "digital" radio or a radio with a discriminator tap like other higher speed digital modes. One good thing about ACARS is that it is just regular audio tones. PP can handle only one frequency at a time. Hi Rick, Using sdr# for audio and virtual audio cables to feed audio to PP is the complicated way to decode ACARS traffic. I'm thinking I must have screwed up a setting somewhere. Planeplotter displays "on opening the acars wave device.unspecified error". I set up vac line 1 to output, in planeplotter set acars from audio i/p and options audio to vac line 1. I'm running sdr# and virtual audio cable. I did have it set up a few weeks ago but now I can't get it setup again. On Mon, at 09:56 AM, Rick wrote: I'm having problems getting planeplotter to receive acars.