Many years ago I wanted to test RTTY and the new digital modes

Double USB-RS232 interface. Produced by FTDI

two stereo high-performance headphone audio amplifiers

The interface separates your rig from your computer through its built-in audio transformers and optocoupler to avoid ground loops and RF interference

Integrated soundcard does not use PC/notebook internal soundcard

With a suitable interface, this signal can connect to the FSK input of an HF transceiver to produce spectrally pure FSK RTTY signals

used a very simple interface with just DC isolation and full Ground

is to control the Yaesu FT 857- 897

CAT o CIV, che consente l'interfacciamento della radio al PC

lasciare accese le due radio senza avere disturbi dalla radio non scelta

della seriale scegliere per pilotare lo switch

The sound output from a receiver give us a demodulated

optoisolatore che traduce i livelli RS232 in un segale utile a pilotate il PTT

Altri tipi di interfacce implementano il circuito di commutazione del PTT

Comandare la radio tramite PC solo per cambiare frequenza

montaggio SMD, che converte il segnale USB in RS232 con pochi componenti

L'interfaccia si monta in brevissimo tempo

Here is the schematic of the simple interface I use between

acquire the analogical signal LF of your receiver) and to transmit at the computer

With FSK you have two necessities FSK & PTT With PTT

This versatile interface was developed by LZ2ZK management transceiver ICOM-746 Pro

portable souncard interface to use with my Icom 70

Galvanic insulation between PC and Transceiver

contains two isolation transformers, one for AF from the tranciever

Meglio FSK O AFSK

This simple and cost effective interface circuit

These simple transistor interfaces will work for most radios

TACLog can make use of two kinds of external interface circuitry

This circuit It converts a RS232 bit stream into standard digital signal inputs and outputs/p>

circuit with three PC-817 optocouplers, RxD/TxD/CW

I made the PCB myself by printing the tracks using a laser printer

FLdigi PSEUDO-FSK signal from the right channel of your SOUND CARD

Il circuito elettrico del Win Key è molto semplice perche' sfrutta la commutazione logica

The Yaesu FT1000MP has an abundance of interface ports for data