FrankinAu

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• Codan Selcall Telcall based on 4/3 7 bit 100baud 170hz FSK, very much used in Au with 4 wheel drive remote travel nets, some also do GPS position beacons & short text messaging

  in New discovery: Source of Selcall signals at 7.1 and 8.0 MHz in Region 3 Comment by FrankinAu May 1
• I use a 7.5-0-7.5 volt center tapped 100VA transformer rectifier 20,000uF filtering & linear regulator 7805+ 2 power transistors good for 5 amps & 5 volts, with RFI mains filter all in a metal box containing KIwiSDR unit and RF filtered eth…

  in My power supply setup Comment by FrankinAu May 1