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TI-85 Calculator

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Welcome to my TI-85 calculator page. I bought the TI-85 before I knew anything about it and was totally surprised by it's simplicity and power. Listed below are some of it's features:

  • 6 MHz Z80 processor
  • 28.5K of user RAM
  • Screen size 128 X 64 pixels (8 X 21 Characters)
  • 2D/3D graphing
  • Ability to run ASM programs
  • Can connect to computer and other calculators for data transfer
  • Can be used with the Calculator Based Laboratory (CBL)
  • Does math :^)

 

Below are some of the programs I have written in TI-BASIC for the calculator:

BeamPatt.Zip Beam width pattern grapher.

This program takes 30 inputs (dB) in .2 degree increments, and plots a diagram representing the directional and side lobe patterns on a RX antenna.

This program is useful in determining dish surface anomalies and radiation patterns.

Dart.zip This program will keep track of scores for two players during the course of an X01 game.

It will also keep a table of wins and losses for up to four players. I have coded in a manual table update, so that score tracking can be accomplished for games other than X01.

Just in case anyone is confused about X01, it means 301/501/701 etc...

FM.Zip Frequency Master. This program is an Alpha release for a frequency conversion/lookup database.

When it is finished, you will be able to type in a frequency i.e. 3400MHz, and it will tell you that 3400MHz is a satellite frequency in C-Band used as a down link frequency for commercial satellites. If the frequency you input is used in a certain band as a channel, it will tell you that too i.e. you input 76MHz, the program will tell you that 76-82MHz is used for channel 5 in the VHF low band on television, and the VHF low band extends from 54-88MHz.

You will also be able to input a band and get the frequency ranges for that band i.e. you input Ku band, and you get back that Ku Band covers 10.95 to 14.5 GHz, which falls into the Super High Frequency (SHF) Band, which covers 3 - 30GHz. Right now, the program only supports frequency input which the program converts to satellite bands (P,L,S,C,X,Ku,Kc,K).

HalfSASH.Zip This program will calculate the total system noise (TSYS) in degrees Celsius and the noise figure (NF) in dB.

To use HalfSASH, you must be testing using an ambient load, a cold load, a noise meter, and of course your RX path.

Right now the program assumes your cold load cal factor is 81.57, but this can easily be changed by you.

Why is this called HalfSASH? Well, it's a limited version of the same program I wrote in C called Satellite Antenna Systems History (SASH) for the PC.

Sqrxz's Day Out This is a level I wrote for the Sqrxz game.

 

Links to some very good TI calculator resources:

Texas Instruments calculator page The people who make the calculators
ticalc.org An extremely awesome site that has everything for the TI series calculators.
The ti-philes If you can't find it on ticalc.org, go here.
The First Finnish Web site for TI-85 Another good place to get stuff for the TI calculators.
TICalc listserv Here's a newsgroup you can get answers about the calculators from. Lot's of very smart people here.

 

 

 

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