Skip to content

LTspice Simulations

Jump to bottom
Dmitry Melnichansky edited this page Apr 7, 2018 · 1 revision

Overview

All the simulations were done in LTspice. The simulation files are located in ltspice folder of the repository

Transmitting mode

With BJT (Q2=2N2222)

BJT circuit

Voltage at rectifier's output

BJT TX 250Hz

Rbase sweep, values 1K, 4,7K 10K

BJT 250Hz Rbase sweep

With MOSFET (Q2=2N7002)

MOSFET circuit

Vin, Vgate and voltage at the PTT pin of the FT-817

MOSFET TX 250Hz

Voltage at rectifier's output

MOSFET TX 250Hz Vgate

Rgate sweep, values 47K100K 220K 330K 470K 510K

MOSFET TX 250Hz Rgate sweep

Receiving mode

RX circuit

Vmic at 250Hz with maximum RX input level and RX level potentiometer in the central position.

Vmic

Clone this wiki locally