Microbit RRC-1258 MkII(s) Bedienungsanleitung PDF herunterladen (Seite 3)

Datamodes

Computers have revolutionised datamode operation for radio amateurs.

With their advent we were no longer restricted to the use of huge,

clunking, mechanical teleprinters, although there is nothing to prevent

us from using such equipment if we choose. Neither were we restricted

to the modes that these machines were capable of employing – invari-

ably only one per type of machine.

The first advances in electronic datamode operation took place

pretty much as soon as personal computers became available, usually

by the use of an external modem. By about 1980 there were modems

and software packages available for the computers of the day; machines

such as the Tandy TRS-80. IBM introduced their Personal Computer in

1981, but it was too expensive for most people to consider having one

at home. Besides, in the first half of the 1980s Sinclair Electronics

established a strong presence in the UK computer market, first with the

ZX80 and later the ZX Spectrum. Huge numbers were sold and a wide

variety of communication (and other) programs written for them. There

were numerous other brands and types of computer available for the

home market, but software wasn’t compatible across the platforms.

Code tables for the common datamodes described here can be

found in the Code Tables chapter.

Morse

The original ‘datamode’, Morse code is attributed to Samuel Morse, but

the Morse in use today – and which has been is use for over 150 years –

is not the same as the code developed my Samuel Morse.

Datamodes

by Steve White, G3ZVW

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Microbit RRC-1258 MkII(s) Bedienungsanleitung Seite 3