Johnny G3LIV © 2019

Johnny G3LIV

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Its compact size is well suited for portable/holiday use.

With the added direct USB connection for later computers.

BLACK screened panels distinguish it from the RS232 model

It allows the usual Data modes.

PSK...RTTY...WSJT...SSTV...WSPR and many more


One RED TX and One GREEN RX front panel mounted Leds show PTT switching activity.

Computer Audio in/out connections is made thru the supplied 3.5mm cable.

The interchangeable cable allows the interface to be used with any transceiver.

The cable is terminated in a 6 Pin Mini Din plug to fit the interface and whatever Plug is required to suit the rig it is being purchased for.

Only needing a change of cable to be plugged in, to suit a new transceivers connection.

There are both Rx waterfall and Tx attenuator controls front panel mounted for operator convenience.

All paths between the COMPUTER and TRANSCEIVER are isolated with




The Dil Relay for PTT control allows ALL rigs to have the PTT controlled from the software.

So no matter what rigs you intend to use, this unit will take care of the PTT switching.

On the computer side 2 – 3.5mm stereo jack plugs take care of the computer to interface audio connections.

And a double ended USB connector for PTT.

Extruded aluminium box   80mm Deep – 55 mm wide – 24mm High.

These two jacks are plugged into the Soundboard's LINE IN/ LINE OUT jack sockets.

Or if a laptop is to be used, its Mike and Headphone Jack Sockets.

                                     The RTS line for PTT switching via USB connections.

Both RX and  TX attenuators  are accessible .

This along with the PC Soundboard Audio controls helps prevent overdriving of the Rig.

And less travelling back and forwards to the Soundboard Sliders.

ALL ISOTERM interfaces are also suitable for SSTV-RTTY-PSK-31-WSJT and most other Soundboard based data modes

KH6TY DIGIPAN software for PSK MODEs is supplied.

DIGIPAN has not been updated for some time, so please use   AIRLINK EXPRESS.

I am not allowed by the writer to add this to my CD.

It is readily available if Googled.

 CWGET and CWTYPE and MMTTY are also supplied.

Information is also given on other web sites for additional DATA software  

Full settings up instructions are of course supplied.

Extra sheets of instructions are enclosed to help further.

Most transceivers can be accommodated.

Fully wired means ALL plugs to suit both Computer and 1 Transceiver.

Prices & Availability please email me at

Payment can be made via PAYPAL.