To transmit is just the callsign, Gridsquare and Transmit power (circled in red) for When combined with the APRS HFgate connectivity to theĪPRS-IS, this brings a whole new level of remote area connectivity.Īs you can see on the WSPR user operating screen here at right, the only thing the WSPR channel is configured Links are extremly slow, about 22 bits in two minutes it is extremelyĮffective at HF communications. ThisĮnables a 1 Watt transmitter to perform as if it was 500 watts! Although the WSPR WSPR is a low power HF system: What WSPR brings to APRS is a 27 dB signal processing gain on the use of HF for mobile and portable APRS communication. Both protocols are very low bandwidth with only minimal data payload requirements. ![]() ![]() Bob Bruninga, over WSPR is the ideal marriage of two very powerful Ham radio capabilities for communicating over great distances while mobile or portable in remote or wilderness areas.
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