SSB 75 Meter Transceiver
This is 75 Meter QRP SSB Transceiver.The transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is produced by the 2N2222 receiver RF amplifier, while automatic gain control (AGC) is produced by the peak DC swing of the LM386 output passed through a rectifier and filtered by a capacitor and fed to the gate of a BS170 enhancement mode FET acting as a variable resistor across the input of the LM386.
| SSB 75 Meter Transceiver Full description at SSB 75 Meter Transceiver website www.qrp.pops.net |
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