GRBAlpha - How to use digipeater or DNxD - 04. Difference of Signals
I explained a littel about the 9600bps signal sound of GRBAlpha in the former article.
Seeing is believing, I show you here the spectrum figures of the two kinds of sounds in that article. These are screenshots of Audacity on Linux.
The first one is the sound from the "RX9600" output line of rear "PKT" connetctor of my Yaesu FT-847.
The second one is the sound from my handy TRX.
You will find the latter one is deleted low and high area of sound. These deleted parts are very important to decode G3RUH packet. So you need discriminator output on your TRX when you want to decode GRBAlpha signal.
« GRBAlpha - How to use digipeater or DNxD - 03. QSL card from Slovakia | Main | GRBAlpha - How to use digipeater or DNxD - 05. My antenna, transceiver, and tracking system »
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