Specifications

9 - SPECIFICATIONS

DIGI KEYER is a multi-mode interface between computer and transceiver. It has been optimized for

amateur digital modes and includes a high performance USB sound processor.

DIGI KEYER is connected to the computer using a single A-B USB cable which is included.

The transceiver and DIGI KEYER are connected by single radio cable terminated on one side by a DB15M

and on the other side by the appropriate plugs for the specific transceiver model. The cable carries power

for DIGI KEYER, audio, CAT control and keying. The appropriate cable for the target radio is specified

when DIGI KEYER is purchased.

If a Windows PC running the "microHAM USB Device Router" program is connected, DIGI KEYER works

as a computer interface. It transfers all digital and analog signals generated by the computer logging

program or digital mode package between the computer and transceiver. Software compatibility is

provided by using virtual serial ports. Router monitors these virtual ports and transfers any data or

commands by USB to the micro controller in DIGI KEYER. DIGI KEYER processes this data and sends it

to the physical ports of transceiver as CAT, CW, and PTT functions.

The USB sound processor in DIGI KEYER independently provides analog to digital conversion of audio

from the transceiver and transfers it via USB to the computer where the Windows sound system processes

that data as a “sound card.” The USB sound processor also receives digital audio from any applications

running on computer and converts that data into audio signals to modulate the transceiver.

microHAM Device Router is not required in order to enable the USB sound functions. The USB sound

processor is supported directly by Windows, Apple OS 10, and LINUX and may be used by any application

compatible with those operating systems.

Minimum Requirements

Minimum: 800MHz PC compatible computer with Win98SE, 48MB RAM, CD-ROM, USB 1.1 port, and

transceiver

Recommended: 1.6GHz PC compatible computer with Windows XP Home or higher, 256MB RAM, sound

card, CD-ROM, USB 2.0 port, transceiver with computer port, logger or control software

DIGI KEYER is also compatible with Apple Macintosh G3-350 or better running OS 10.0 or later. It is

directly supported by MacLoggerDX (www.dogparksoftware.com/MacLoggerDX.html) by Don Agro,

VE3VRW.