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A soundcard digimode interface


the optocouplers can be of any type, however they must be able to key the cw, fsk and ptt inputs of your radio
post 30 Jan 2024
A soundcard digimode interface

PC sound Radio Interface Links

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A Switchbox for Soundcard Digital Modes
this switchbox uses the components from a computer COM port switch

Cable for TR-Log and the IC-706
Interface the Icom rig to TR-Log software on a notebook computer

PSK31 Interfacing M0KGK
PSK31 is to interface a PC to the transceiver and use one


Take off angle of horizontal antenna

Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

Calculo da Antena Bazooka

Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto