Automatic Packet Reporting System (APRS) developer Bob Bruninga, WB4APR, is looking for someone who will build a linear satellite transponder for PSK31.
“If someone will build a linear PSK31 transponder, I have a launch opportunity in 9 months,” Bruninga said in a posting to the AMSAT Bulletin Board. “All it needs to be is a PSK31 linear receiver on 28.120 MHz (3 kHz bandwidth) with AGC coupled …
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