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Slow Speed Variants

Cable_MK21.txt

This is documentation about the connection of a key line to the CASSETTE port of Tandy laptop models. Use of the Tandy cassette cable (Radio Shack part number 26-1207) is explained, and all detail is provided in order to construct a twisted-pair cable that serves the same purpose.

Ron Wiesen

Fd.do

One of three provided MERGE files which are used to modify MK21 in order to define text buffers in a way that is optimum for competitive Field Day operation, as explained in 'MODIFY BY MERGE' section of MKMAN.DO.

Ron Wiesen

Fdclas.do

One of three provided MERGE files which are used to modify MK21 in order to define text buffers in a way that is optimum for competitive Field Day operation, as explained in 'MODIFY BY MERGE' section of MKMAN.DO.

Ron Wiesen

M102s_FieldDay.jpg

Model 102 laptops deployed in "damn Yankee land" for competitive advantage in Field Day 2009 competition: left laptop runs Morse code Keyboard for Models 200 and 10x (MK21.BA modified by three MERGE files for competitive Field Day operation) to provide Morse code keying of radios, right laptop runs Log Recorder (LOGREC.BA) to dupe-check and log the radio contacts. Ten-Tec HF radio transceivers: Scout (black unit at center http://www.eham.net/reviews/detail/142), Century 22 (unit at right http://www.eham.net/reviews/detail/458). Other items: E. F. Johnson Matchbox balanced transmission line coupler (large unit at left http://www.eham.net/reviews/detail/623), full set of plug-in band modules for Scout (in plastic tub sitting atop the E. F. Johnson Matchbox), Curtis K5B "Lil' Bugger" mode B iambic keyer (tiny black unit at left http://www.hamanuals.com/MMans/CURTIS.pdf) driven by Kent TP-1 twin paddle key (partially seen at lower right http://www.eham.net/reviews/detail/1286), two EME 256 kByte RamPacs (small

Ron Wiesen

Mk21.do

Morse code Keyboard for models 200 and 10x -- this default (the file content as-is) provides the fast speed variant. If you change the file content so that every percent sign becomes an exclamation mark or becomes a pound sign, then you produce one of the slow speed variants.

Ron Wiesen

Mkman.do

Documentation of MK21, the Morse code Keyboard for models 200 and 10x.

Ron Wiesen

Mycall.do

One of three provided MERGE files which are used to modify MK21 in order to define text buffers in a way that is optimum for competitive Field Day operation, as explained in 'MODIFY BY MERGE' section of MKMAN.DO.

Ron Wiesen