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CCR-82 Computer Cassette Tape Recorder

DXpeditions - Grayline Propagation Times

Inductance Loaded Radiator

Inductor Loaded Radiator -- an antenna m

Log Recorder for Model 10x

Morse code Discriminator for Model 10x

Morse code Keyboard for models 200 and 1

NATIVE

One-Time Pad encipherment~decipherment

One-time pad Letter-only cipher~decipher

Radio Orphan Annie Secret Decoder Badge

Rampac Diagnostic RD

Service Adjuncts of O___ System in Publi

Service Adjuncts of T___ System in Publi

TEENY

Ten-Tec Omni VI monitor

Transmission Line Coupler Project

Utilities

Dx0dx.do

As-is, DX0DX.BA has short-term value to Radio Amateurs who desire contact with DXpedition operators of station DX0DX while it's on-air at Thitu Island. Thitu Island is in the Pacific ocean located at North 11° 03' 05.4" by East 114° 17' 02.0". The program reports the sunset time in UTC and sunrise time in UTC at Thitu Island (and solar azimuths) for the current date. It senses the DATE$ function of the laptop in order to ascertain the current date. Because times are reported in UTC (i.e., the Greenwich Mean Time zone) and the TIME$ function influences the change of date occurrence in the DATE$ function, accurate reports result only where you have set TIME$ and DATE$ of the laptop so that they express the UTC time and the UTC date. However for Grayline propagation prediction purposes, sufficiently accurate reports are obtained where the DATE$ of the laptop differs from the UTC date by less than 2 days. Note that DX0DX.BA is a special purpose variant of SUNUP.BA which also is available (file SUNUP.DO).

Ron Wiesen

Ft5ga.do

As-is, FT5GA.BA has short-term value to Radio Amateurs who desire contact with DXpedition operators of station FT5GA while it's on-air at Glorioso Islands. Glorioso Islands are in the Indian ocean located at South 11°30'00" by East 47°19'48". The program reports the sunset time in UTC and sunrise time in UTC at Glorioso Islands (and solar azimuths) for the current date. It senses the DATE$ function of the laptop in order to ascertain the current date. Because times are reported in UTC (i.e., the Greenwich Mean Time zone) and the TIME$ function influences the change of date occurrence in the DATE$ function, accurate reports result only where you have set TIME$ and DATE$ of the laptop so that they express the UTC time and the UTC date. However for Grayline propagation prediction purposes, sufficiently accurate reports are obtained where the DATE$ of the laptop differs from the UTC date by less than 2 days. Note that FT5GA.BA is a special purpose variant of SUNUP.BA which also is available (file SUNUP.DO).

Ron Wiesen

ILDRAD.TXT

JD_MJD.DO

JD MJD.BA converts the Gregorian date that the Model T laptop (M10x or M200) holds in its calendar to the corresponding Julian Day (JD) and Modified Julian Day (MJD). It is valid for Gregorian dates from January 1, 2000 (i.e., DATE$ of 01/01/00) through December 31, 2099 (i.e., DATE$ of 12/31/99). The simplified mathematics of this program is made possible by using a baseline JD of 1721119.5 (see commentary of line 5), which corresponds to the Gregorian date of March 3 in the year 1 Before Common Era (BCE) at midnight Universal Time Coordinated (UTC). Note that the MJD is a 5-digit shortened variant of the JD. You may use the 5 numerals of the MJD as the trailing 5 characters in a filename to designate its date. For example, file J56116.DO is a journal file for the Gregorian date of July 8, 2012.

Ron Wiesen

LOGARS.DO

Textual equivalent BASIC statements of the LOGARS program.

Ron Wiesen

LOGARS.TXT

Documentation of the LOGARS program. LOGARS finds both the Common base 10 logarithms and Natural base e logarithms for any positive values that you provide. As an aid to folks who use slide rules, LOGARS also reports the mantissa part of the Common base 10 logarithms.

Ron Wiesen

Plan 1c Beam Azimuths from Field Day 200

Azimuthal equidistance projection map centered on a 1320-foot elevation Field Day 2009 site. It shows the radio coverage by the two selectable major lobes of a 2-element echelon array (a coparallel array, end-fire antenna) as two color coded areas of ±27.5° beamwidth: blue&green along bidirectional 280°==100° heading, and red&orange along bidirectional 225°==045° heading.

Ron Wiesen

SECTNS.DO

This is a list of 83 section abbreviations that are in effect for the November Sweepstakes of 2012. There are 71 sections of the American Radio Relay League (ARRL); there are 12 sections of the Radio Amateurs of Canada (RAC). A section abbreviation is either 2-letter or 3-letter. With the cursor positioned at the beginning of file SECTNS.DO, press the F1 key (Find) and then enter a section abbreviation followed by 1 Space character in order to determine the validity of a section abbreviation. For example, pressing F1 and entering "SJV " confirms that SJV is a valid section abbreviation and that it stands for the "San Joaquin Valley" section.

Ron Wiesen

Sunup.do

SUNUP.BA reports sunset and sunrise times and solar azimuths at any Earth location for any date. It first prompts for the Latitude/Longitude coordinates of a place on Earth. Express coordinates in degrees as fractional numbers using: positive values for North latitudes and East longitudes, and negative values for South latitudes and West longitudes. For example, input "-37.81666667, 144.9666667" for the location of the city of Melbourne, Australia (i.e., South 37°49'0", by East 144°58'0"). It next prompts for a time zone for time results. Express this as a quantity of time zones situated West of Greenwich, England. For example, input "0" for the Greenwich Mean Time zone (i.e., time results in UTC). Lastly, it prompts you to elect a date using the format: numeric year, numeric month, numeric day. You may elect any past date, the current date, or any future date. For example, input "2012, 12, 21" for the date of December 21, 2012. The program then reports the time and solar azimuth of sunset and sunrise.

Ron Wiesen

Vp6dx.do

As-is, VP6DX.BA has short-term value to Radio Amateurs who desire contact with DXpedition operators of station VP6DX while it's on-air at Ducie Island. Ducie Island is a South Pacific atoll that's located at South 24°40'52.6" by West 124°47'11.0". The program reports the sunset time in UTC and sunrise time in UTC at Ducie Island (and solar azimuths) for the current date. It senses the DATE$ function of the laptop in order to ascertain the current date. Because times are reported in UTC (i.e., the Greenwich Mean Time zone) and the TIME$ function influences the change of date occurrence in the DATE$ function, accurate reports result only where you have set TIME$ and DATE$ of the laptop so that they express the UTC time and the UTC date. However for Grayline propagation prediction purposes, sufficiently accurate reports are obtained where the DATE$ of the laptop differs from the UTC date by less than 2 days. Note that VP6DX.BA is a special purpose variant of SUNUP.BA which also is available (file SUNUP.DO).

Ron Wiesen