FUNcube Dongle Copyright 2011 Page 22 of 23
Input comes from either a wave file, a soundcard or via a UDP connection with the SDR-
RADIO.com Console.
You normally use a UDP connection between the console and the image viewer:
1. In the console select the AF Output pane in the ribbon bar and enable the UDP server.
2. In the image viewer select the Live Data pane in the ribbon pane and enable the UDP
client.
The UDP connection is fixed at 48,000Hz, 16-bits, single channel.
Look at the status bar in the image viewer, it shows the relative signal level and the
synchronisation status. The live data signal level is independent of the audio output level in the
console.
For the weather satellites (NOAA-15...) in the console select WFM (Wide FM at 48kHz) and
adjust the bandwidth so that in the Audio Spectrum it shows about 17.5kHz - the filters will be
covering the input from the satellite.
6.2 Wave File
A wave file usually has a WAV file extension http://en.wikipedia.org/wiki/WAV and is the most
common format used for storing uncompressed audio.
The wave file must obey the following criteria:
Sample rate between 11,025 and 48,000 HZ.
Sample size of 8 or 16 bits.
Single channel.
6.3 More
6.3.1 AGC
In the SDR-RADIO.com Console switch the AGC to OFF for best decoding of the picture. If AGC
is OFF and the picture is all white (no contract) then the AGC gain is too high, reduce the gain
until contrast appears.
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