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AFSK31, PSK31 via VCXO varactor
Sunday, December 30, 2007
Audio transformer varactor modification.
Here is the transformer and the cut trace of the varactor circuit. 0 - 14 VDC still passes through the transformer to control the transmitter frequency. The transformer adds about 100 Ohms to the circuit.
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2007
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December
(11)
Initial Request
Initial Design Idea.
Audio transformer varactor modification.
DigiPan Baseline
Quick Initial Test
Equiment Used
TX and RX combo baseline
As received in CW mode
Reception in USB
Reception in LSB
Reception in FM
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