Notes on Weather Radios

I first discovered Weather Radios in December of 2001 when I was 14 going on 15. That previous spring and summer I had begun to cultivate an interest in all forms of radio communications. As previously stated, I always had a fascination with weather. So, to me, a weather radio seemed to be a pretty cool device.

I wrote these notes on Weather Radios in the composition book I had been EDCing on October 3, 2018. The main source for these notes I have taken that I will cite is Wikipedia.

Without further ado, here are the notes:

A Weather Radio is a special radio receiver that is designed to receive the signals from government owned radio stations that broadcast weather observations continuously.

Routine reports are interrupted when a weather emergency arises.

Some non weather emergency information may be broadcast such as a natural disaster, civil emergency or terrorist attack.

Broadcasts occur on the VHF High Band.

Two varieties are sold: Home and Portable.

Portable models come with features such as crank power in addition to grid current and batteries for use in an emergency when the power is disrupted. Smaller portable/pocket models do not typically feature Specific Area Message Encoding, but allow outdoor enthusiasts to get weather information in a compact device.

Modern Home models have in addition to Specific Area Message Encoding, visual alert features such as text displays and multi-colored lights. They also have connections to add peripherals such as pillow shakers or bed shakers, strobe lights and loud sirens for people with sensory disabilities. There peripherals can be connected via the weather radio’s accessory port.

NAVTEX gives Global Weather alerts for ships at sea. It is a Low Frequency Teletex broadcast.

In the United States NOAA Weather Radio is a nationwide network of automated weather broadcast stations giving weather information from a nearby Nation Weather Service forecast office. A broadcast cycle lasts between three and eight minutes.

Specific Area Message Encoding activates radios based on the Federal Information Processing System codes and radios equipped with that said feature will only activate when the corresponding administrative division programmed in the radio has an emergency.

Weather Radio Channels and Frequencies:

Original Number…..Frequency…….Marine Number……New Number
WX01…………….162.550 MHz…..39B…………………….7
WX02…………….162.400 MHz…..36B…………………….1
WX03…………….162.475 MHz…..97B…………………….4
WX04…………….162.425 MHz…..96B…………………….2
WX05…………….162.450 MHz…..37B…………………….3
WX06…………….162.500 MHz…..38B…………………….5
WX07…………….162.525 MHz…..98B…………………….6
WX08…………….161.650 MHz…..21B…………………..N/A
WX09…………….161.775 MHz…..83B…………………..N/A
WX10…………….163.275 MHz…..113B…………………N/A

Notes on the Electronic Calculator

Since infancy, I have had a great fascination with calculators, in fact just about as much as with flashlights. This is because they were always around me growing up. Before my dad became a special education teacher, he was a bank executive so therefore he always had a calculator until his career change. My mom has taught high school math since 1980 and she has always EDCed a scientific calculator or two. I had EDCed a calculator on and off since the age of eight and then permanently since the age of twenty-five. Though both of my parents are teachers, I am not. I am more or less of an amateur tradesman, especially in the trades of electrical and computer repair. Because of this, I greatly realize the need to EDC a calculator, though not for the same reason as my parents. For a while, I have been also EDCing a composition book on which I take notes on subjects that I consider important to me. On October 2nd and 3rd of 2018, I did some research on electronic calculators and took notes into my composition book. I am transcribing these notes for others to read.

Without further ado, here are my notes on electronic calculators:

Wikipedia is the source I cite as that is where the bulk of this information comes from.

The first solid state electronic calculator was created in the early 1960s.

Pocket-sized models came avaailable in the 1970s after the first microprocessor, the Intel 4004 was invented.

By the end of the 1970s, basic calculators were affordable to most and became common in schools.

In 1986 ~41% of the world’s general purpose hardware capacity was represented by calculators. As of 2007, it is only 0.05%.

Processor Components:

The Scanning/Polling Unit scans the keypad waiting to receive an electrical signal when a key is pressed.

The X and Y registers are where numbers are temporarily stored during calculations. All numbers go into the X register first, the number in the X register is displayed.

The function for the calculation is stored in the Flag Register until the calculator needs it.

The Permanent or Read Only Memory or ROM is the instructions for built-in functions that are permanently stored and cannot be deleted.

The User or the Random Access Memory or RAM is where numbers can be stored by the user and contents can be changed or erased by the user.

The Arithmetic Logic Unit or ALU executes all arithmetic and logic instructions and produces results in binary code.

The Binary Decoder Unit converts the binary results into decimal numbers which are shown on the display unit.

The clock rate of the processor chip refers to the frequency of which the Central Processing Unit is running. It indicates the processor’s speed and is measured in clock cycles per second and expressed in the unit of Hertz. Basic calculations can vary between a few hundred Hertz to the KiloHertz range.

The first devices used to aid in arithmetic calculations were bones, pebbles, counting boards and the Abacus which was used in ancient Egypt and Sumeria before 2000 BC.

Computing tools started to arrive in the 17th Century with inventions such as the Geometric Military Compass, made by Galileo.

Logarithms and Napier’s bones were invented by Scottish mathematician John Napier of Merchiston (1550-April 4, 1617.)

The slide rule was invented by English and Welsh clergyman, mathematician and astronomer Edmund Gunter (1581-December 10, 1626.)

In 1642, the mechanical calculator was invented by German professor and minister Wilheim Schickard (April 22, 1592-October 24, 1635) several decades before the device invented by French mathematician, physicist and writer Blaise Paschal (June 19, 1623-August 19, 1662.) Schikard’s device used a well-thought set of mechanized multiplication tables to quicken the process of multiplication and division. Paschal’s calculator could add and subtract two numbers directly.

German polymath Gottfried Leibinz (July 1, 1646-November 14, 1716) spent four decades attempting to design a four operation mechanical calculator he called “The Step Reckoner. he was not successful but in the process, he invented “The Leibinz Wheel.”

At that point my medication kicked in and I went to bed, then resumed taking notes on October 3, 2018.

There were five other unsuccessful attempts to design a calculating clock in the 17th Century.

The first successful calculating clock was invented in the 18th Century by Marquess physicist, mathematician and antiquarian Giovanni Poleni (1683-November 1761.)

Assumed Italian inventor Luigi Torchi (1812-?) invented the first direct multiplication machine and the second key-driven machine in the world, following James White’s invention in 1822.

Real developments began during the Industrial Revolution of the 19th Century. This made large scale production of devices that could perform all four functions of arithmetic.

The Arithmometer was invented in 1820 and put into production in 1851. It became the first commercially sold unit and by 1890, 2,500 units had been sold. There were even clone units from Burkhardt, Germany, in 1878 and Layton, UK, in 1883.

In 1902, American James Dalton invented The Dalton Adding Machine with the first push-button interface.

In 1921, American Electrical Engineer Edith Clarke (February 10, 1883-October 29, 1959), the first female professor of Electrical Engineering at UTA invented the “Clarke Calculator” which was a simple graph-based calculator for solving line equations that involved hyperbolic functions. This device gave electrical engineers the ability to simply calculate inductance and capacitance in power transmission lines.

In 1948, Austrian engineer Curt Herzstark (July 26, 1902-October 27, 1988) invented the pocket portable calculator which was called the “Curta.”

Casio released the Model 14-A in 1957. It was the world’s first all-electric compact calculator.

In October of 1961, British Bell Punch/Sumlock Comptometer ANITA, which is an acronym for “A New Inspiration To Arithmetic/Accounting” was announced. It used cold cathode tubes and Dekatrons in its circuits in addition to 12 cold cathode Nixie tubes. There were two models displayed: the Mk VII was for Continental Europe and the MK VIII was for the UK and the rest of the world.

Tubes began to be phased out in 1963 when the American-made Friden EC-130 was built of an all transistor design. It featured a stack of four thirteen digit numbers and a five-inch cathode ray tube. It also introduced Reverse Polish Notation. This machine sold for $2,200.

In 1964 Sharp introduced the CS-10A. It weighed 25 kilograms or 55 pounds and cost 500,000 yen or $4,457.52.

Italian company Industria Machine Electroniche also introduced the IME-84 with several peripherals so several users could make use of it (but not simultaneously.)

Several manufacturers followed including Canon, Mathatronics, Olivetti, Toshiba, Smith Carona Marchant, and Wang. These calculators used Germanium as opposed to Silicon for their transistors. Displays were either Cathode Ray Tube or cold cathode Nixie tubes and filament lamps. Memory was either delayed line memory or magnetic core memory. However, the Toshiba “Toscal” BC-1411 possibly had an early form of Dynamic Random Access Memory.

In late 1965, the Olivetti Programma 101 was released. It could read and write stored programs on magnetic memory cards and display the results on its built-in printer. Memory was achieved with an acoustic delay line and could be partitioned between program steps, constants and data registers. It could be considered the first commercially made personal computer and won many industrial design awards.

Also in 1965 the Bulgarian made ELKA 6521 was released. The name is derived from a portmanteau of ELektronen KAlkulator. It weighed 8 kilograms or 18 pounds. It was the first calculator to feature a square root function. Later in 1965 the ELKA 25 with a built-in printer was introduced. The ELKA 101 was released in 1974 and was ELKA’s first pocket model. It featured Roman script (I guess as opposed to Slavic)since it was exported to Western Countries.

In 1967, the Monroe Epic was put on the market. It was a large printing desktop model with an attached floor standing logic tower. It could be programmed to carry out many computer-like functions. Unfortunately, the only branch instruction was an implied unconditional branch (GO TO) at the end of the operation stack, which returned the program to its starting instruction. Therefore it was impossible to include any conditional branch ie (IF-THEN-ELSE) logic.

During this time period, the absence of a conditional branch sometimes determined the difference between a programmable calculator and a computer.

Also in 1967, Texas Instruments American electrical engineer Jack Kilby (November 8, 1923-June 20, 2005) led the production of the first prototype of a handheld calculator, the “Cal Tech.” It could perform the four basic operations and printed the results on paper tape.

In 1970 a calculator could be produced with just a few low power chips and be powered by rechargeable batteries. Also in 1970, the first portable calculators appeared in Japan and were sold around the world. Models included the Sanyo ICC-0081 Mini Calculator, the Canon “Pocketronic” and the Sharp QT-8B “micro compet.”

Desiring to reduce power consumption, Sharp introduced the EL-8 which was also marketed as the Facit IIII. it was close to being a pocket model and weight 1.59 pounds or 721 grams, had a vacuum fluorescent display, rechargeable NiCad batteries and sold for $395.

In early 1971, the first “Calculator on a chip” the MK6010 was made by Mostek. Also in 1971, Pico Electronics and General Instrument introduced the chipset for the Monroe Royal Digital III calculator.

The Busicom LE-120A “HANDY” was the first truly pocket-sized calculator. It was the first to feature an LED display, first to use a single integrated circuit and the first to run on primary batteries. It measured 4.9 inches by 2.8 inches by 0.9 inches (124 millimeters by 71 millimeters by 23 millimeters.)

The DB800 was made in 1971 in Buje, Croatia, and was the first European made pocket calculator.

The Bowmar 901B was the first American made pocket-sized calculator which measured 5.2 inches by 3.0 inches by 1.5 inches (132 millimeters by 76 millimeters by 38 millimeters) and was put on the market in Autumn of 1971. It featured the four basic functions, a red LED display and sold for $240.

Then in 1972, the first slimline pocket calculator was released. It was the Sinclair Executive. Measuring 5.4 inches by 2.2 inches by 0.35 inches (137.2 millimeters by 55.9 millimeters by 8.9 millimeters), it sold for 79 Pounds.

The first pocket-sized Soviet-made calculator was the Elektronika B3-04 was developed in 1973 and put on the market in 1974.

In 1973, the Sinclair Cambridge was launched. It sold for 29.95 Pounds or $38.40. Because of their lower price, Sinclair units were popular but they were slower and sometimes produced inaccurate results with transcendental functions.

The first Soviet-made, pocket-sized scientific model B3-18 was completed by the end of 1975.

Texas Instruments introduced the SR-10 (SR stands for “Slide Rule.”) It was an algebraic entry-level pocket calculator using scientific notation and sold for $150. Afterward, the SR-11 was released and had a dedicated key for the Pi constant. The following year, the SR-50 was released and added the trigonometric and logarithmic functions. It was a competitor model to the Hewlett Packard HP-35.

In 1976, the Texas Instruments TI-30 was launched and descendants of it are still in production.

In 1978, Calculated Industries made special purpose calculators such as the “Loan Arranger” which was marketed to Real Estate professionals. In 1985 they launched the “Construction Master” which was marketed to the building trades.

Programmable calculators such as the Mathatronics and Casio AL-100 were very heavy and costly.

The Hewlett Packard HP-65 came out in 1974 and had a capacity of 100 instructions and could store and retrieve programs in a built-in magnetic card reader. The HP-25 introduced continuous memory which stored data and programs in a CMOS. The HP-41C was released in 1979 and could be expanded with Random Access Memory and Read Only Memory. It could also be connected to bar code readers, microcassette and floppy drives as well as printers and communication interfaces such as the RS-232, HP-IL, and HP-IB.

The ISKRA123 was Soviet-made, grid powered and released in the early 1970s. The Elektronika B3-21 was developed at the end of 1976 and put on the market in early 1977. Its successor, the B3-34 was widely used and hundreds of thousands of games and program were written for it. The Elektronika MK-52 was used in the Soviet Space Program.

The Hewlett Packard HP-28C was released in 1987 and was the first calculator capable of symbolic programming.

The Casio fx-7000G was released in 1985 as the world’s first graphing calculator.

In 1981, the Hewlett Packard 12-C was the first financial calculator…

Notes on the Barometer

I have been fascinated by the weather since early childhood.

I have also had a keen interest in sciences of all kinds, throughout my life though I am not very good at it. I mean I am so terrible at science that I don’t even hold an Associate’s Degree.

However, I do spend a good bit of my time engaged in independent learning.

In this page, I will post the transcript of notes I had taken in my composition book that detail information about Barometers.

Without further ado, here they are:

These notes were taken on October 1st and 2nd of 2018.

The main reference that I will cite is Wikipedia as that is where I got the bulk of this material from.

Notes on the barometer and its inventor(s).

Barometers are used in meteorology to measure atmospheric pressure.

Pressure tendency detects short term changes in weather.

Measuring air pressure within surface weather analysis is helpful in locating surface troughs, high-pressure systems and frontal boundaries.

The term “barometer is derived from ancient Greek words which literally translate into words that mean weight and meter/measure.

Evangelista Torricelli (October 15, 1608-October 25, 1647) an Italian physicist and mathematician are credited with inventing the barometer in 1643.

Italian astronomer and mathematician Gapardo Berti (1600-1643) may have also unintentionally created a water barometer sometime between 1640 and 1643.

French scientist and philosopher Rene` Descartes (March 31, 1596-February 11, 1650) described the design of an experiment to measure air pressure possibly as early as 1631 but no evidence is there to suggest that he actually built such an instrument.

On July 27, 1630, Italian mathematician, physicist and astronomer Giovanni Battista Baliania (1582-1666) wrote to Italian polymath Galileo Galilei (February 15, 1564-January 8, 1642) describing a failed experiment in which he made a siphon led over a hill ~21 meters high. Galileo replied explaining that the power of the vacuum held the water up but at a certain height the amount of water was simply too much and the vacuum could not hold anymore, like a cord that can only support so much weight. This was a restatement of “horror vacui” or “nature abhors a vacuum, a theory which dates back to ancient Greek philosopher and scientist, Aristotle (384-322 BC.) Galielo restated this theory as “resistenza del vacuo.”

These theories were published in Galileo’s “Discoursi” and they reached Rome in 1638.

Raffade Magiotti and Berti were excited by these ideas and sought another way to produce a vacuum besides a siphon.

Magiotti devised the experiment and Berti carried it out sometime between 1639 and 1641.

A simple model of this experiment consisted of filling a long tube with water plugged on both ends, then stood up in a water-filled basin. The bottom plug was removed and the water inside the tube flowed into the basin. However, only a portion of the water flowed out of the tube and the height of the water inside the tube stayed at an exact level, which happened to be 10.3 meters or 34 feet, the same height that Galileo and Baliani observed to be limited by the siphon.

The most important detail of this experiment was that lowering the water in the tube left a space above it in the tube with no immediate contact with air. This suggested the possibility of a vacuum existing in the space above the water.

Torricelli, a pupil, and friend of Galileo interpreted the results of this in a novel way. He proposed that it was the atmosphere and not the attracting force of the vacuum that held the water in the tube.

Followers of Aristotle and Galileo thought air to be weightless.

Torricelli questioned and challenged this belief and suggested that air indeed has weight and it was the weight of the air which pushed up and held the column of water.

Torricelli believed that the level of which the water stayed at in the tube (10.3 meters of 34 feet) was reflective of the air’s weight pushing on the water in the basin, thus limiting how much water can fall from the tube into the basin.

Torricelli viewed the barometer as a balance or measuring instrument instead of a device to merely build a vacuum.

Because pf Torricelli being the first to observe this, he is credited as being the inventor of the barometer.

Torricelli’s gossipy Italian neighbors spread rumors that he was engaging in sorcery and witchcraft. Torricelli thus decided to keep his experiments a secret to avoid being arrested by the Roman Catholic Church.

In order to be more covert, he needed a liquid denser than water, to which Galileo suggested he use Mercury. As a result, he only needed a tube that was 80 centimeters long as opposed to 10.5 meters.

*SIDE NOTE*: While I was initially taking these notes on that evening in early October 2018, I decided to take a few sips of Wild Cherry Pepsi in an attempt to temper the sting of depression which I frequently suffer. Soft drinks, while extremely addictive do indeed help me write better and they do help fight depression, at least for me. Wild Cherry Pepsi is my favorite soft drink.

Decreasing atmospheric pressure was initially postulated by French physicist Lucien Vidi (1805-April, 1866.) He later invented the barograph, a device which records the pressure readings of an aneroid barometer.

German writer and polymath Johan Wolfgang Von Goethe (August 28, 1749-March, 22 1832) invented a water driven barometer based on Torricelli’s principles. It is known as the weather ball barometer and is comprised of a glass container with a sealed body half-filled with water. The narrow spout is open to the atmosphere. When the pressure is lower than it was at the time the body was sealed, the level of water in the spout will rise above the water level in the body. When the pressure is higher, the water level in the spout will drop below the water level in the body. This device is known as a “weather glass” or a “Goethe Barometer.

Mercury Barometer:
A vertical glass tube closed at the top sitting in an open Mercury filled basin at the bottom. The Mercury’s weight creates a vacuum at the top known as a “Torricelli Vacuum.” The Mercury in the tube fluctuates until the weight of the Mercury column balances the force of the air pressure bearing down on the reservoir. Higher temperature levels around the instrument will reduce the density of the Mercury, thus the scale must be calibrated in such a way to compensate for this effect. The tube must be as long as the amount of Mercury in addition to the headspace as well as the maximum length of the column.

Torricelli observed slight changes each day in the height of Mercury in the tube and concluded that this was due to changing pressure in the atmosphere.

On December 5, 1660, German scientist, inventor and politician Otto von Guerricke (November 20, 1602-May 11, 1686) observed that the air pressure was unusually low and predicted a storm which struck the next day.

The Mercury barometer’s design made the expression of atmospheric pressure in inches of Mercury popular. The range is typically between 26.5 and 31.5 inches (670-800 millimeters) of Mercury.

One atmosphere is equivalent to 29.92 inches or 760 millimeters of Mercury.

On June 5, 2007, the governments of the European Union restricted the sale of Mercury, effectively ending the manufacture of new Mercury barometers in Europe.

An aneroid barometer uses a flexible metal box instead of any liquid to measure air pressure. It was invented in 1844 by Lucien Vidi. The box is known as an aneroid cell or capsule made from an alloy of Beryllium and Copper.

The evacuated capsules are many times several stacked together to add movement and are protected from collapsing by a strong spring. Any change in the surrounding air pressure causes the capsule to expand or contract.

This movement drives mechanical levers in such a way that their changes are amplified and displayed on the dial face of the instrument. Many models also feature a manually set needle to mark the current observation and compare with previous and future observations so a change can be seen.

Microelectromechanical systems (MEMS) barometers are extremely small ranging size between 1 and 100 micrometers. They are manufactured using photolithography or photochemical machining. These can be found in miniature weather stations, electronic barometers, and altimeters.

Certain smartphones such as the Samsung Galaxy Nexus, Samsung Galaxy S3 through S6, the Motorola Xoom, Apple iPhone 6 as well as higher end Casio and Timex watches have built-in barometers using MEMS technology.

Formulas:
Pressure in atmospheres Patm=p*g*h
Where p=density of Mercury=13,595 kg/meter cubed (sorry I don’t know how to do sub and superscript on here) g=graviation accelaration=9.807 meters per second squared, h=height.
1 torr=133.3 Pascals or 0.03937 inches of Mercury.

My personal commentary:
Most weather predictions for civilians are obtained through the mass media and government run forecasting services. Should our enemies hit us with an EMP all of this will come to a grinding halt.

Personal maybe even homemade barometers may make a comeback should this happen.

After all, we would still want to know when will storms be headed in our area so we can spend time cuddling with bae.

A barometer could possibly give some advanced notice of incoming foul weather.

However, all modern conveniences will be gone so will we actually have the time to cuddle with bae?

The weather might be the least of our worries as I’ve stated before and cuddling with bae might be highly frowned upon because cuddling sometimes leads to intercourse and intercourse ultimately means more hungry mouths to feed…

Computer Instruction Notes

I have been EDCing a Composition Book containing notes I have taken on subjects that I’d like to be well versed in. This page and others will feature the notes I have written so others can be as educated as I am on these subjects.

This particular page will deal with my Computer Instructions, specifically on how to get a better operating system for your computer. These are very general, but I still find them to contain valuable information.

The reasons why you may want to change your operating system is either because you are sick and tired of dealing with Microsoft Windows’ painfully numerous shortcomings or the version of Linux you are using is out of date and no longer supported. Maybe you are like me and you liken trying different flavors of Linux to trying different flavors of ice cream.

Whatever the reason, these instructions should be quite useful.

Without further ado, here it is:

…October 1, 2018, is when this was written…

Upgrading your computer’s operating system.

Check the hardware specifications of machine desired for upgrade.

Determine whether your machine is 32 bit or 64 bit.

Search for a distribution that is compatible with hardware specs.

Download the .ISO file.

32 Bit .ISO files work on both 32 Bit and 64 Bit hardware.

64 Bit .ISO files work only on 64 Bit hardware infrastructure.

Athalon AMD is typically 64 Bit.

Intel X86 is typically 32 Bit.

Use Startup Disk Creator (in Linux at least) or Unetbootin (otherwise) to “burn” the .ISO file to installation media (USB stick or SD card.) Use CD burning software to “burn” .ISO file to CD or DVD.

Insert installation media into computer desired for the upgrade, then shut down.

Start up the said computer again and access the BIOS, which is usually achieved by repeatedly pressing one of the Function Keys during and right after power up.

Go to the Boot Menu within the BIOS memory. Here you will modify the Boot Sequence.

Select the device containing the installation media to be the first boot device.

Save changes, then exit the BIOS and restart.

Follow instructions as the new operating system boots.

Restart when finished and be sure to remove installation media…