Archive for the 'testing' Category

The History Of The Walkie Talkie

Friday, December 18th, 2009
The walkie talkie, also known as the handheld transceiver has a rich history and has been instrumental in developments in the military sphere. Fundamentally they are a hand held way to communicate with anyone else who has a similar device. Their history can be traced to the Canadian government who during the Second World War designed the device in order that military operatives had a ready form of communication for operational activities.

The first walkie talkie device was the Motorola SCR-300. First being released in 1940 it was not as handheld as modern variants; at this time the smallest devices still required the user to carry a backpack. However development occurred quickly and in the latter stages of the war a handheld device was released being labelled the ‘handie talkie’ by troops. The term walkie talkie, although being used describe all modern devices during the war referred to the backpack model rather than the handheld. The handie variety however suffered in terms of operation because of its reduced size.

Development after the war was rapid with improvements to both range and size evident amongst the allied nations. However the walkie talkie still had its limitations. Due to the power restrictions, normally only a few watts, the communication applications were somewhat poor. Most handheld devices of the post war era, even up to the seventies operated poorly in built up areas where buildings restricted the transmission of radio waves. As a result, military personnel often had to utilise a highly mounted ‘repeater’ that vastly improved the range of the device.

Today the walkie talkie is still a frequently used device in the military although modern models are far smaller and usually integrated in the form of headsets and mouthpieces. The devices however are not purely used in the military sphere, applications today include the public sector, outdoor activities and security personnel, in fact anywhere where constant communication is needed, a walkie talkie is regarded a standard piece of equipment. Other developments have improved the durability of the devices making them shockproof and waterproof. Some developments have focussed on the size of the devices; modern electronics have allowed light and small models to enter the market. Additionally, designers have incorporated scrambling devices in order for operatives to have private communications; this type of development has been especially useful in the construction of police radios.

The walkie talkie has also become a popular toy for children. Predominantly these are low power devices that do not require a licence because they operate in a specific frequency range and do not have the power to communicate over long distances. Normally the components used in the construction of these toys are far cheaper than ‘adult’ varieties meaning that they are not applicable for uses in business. In addition, while more expensive models have a separate microphone and speaker, the children’s models use one speaker for both purposes. One use that is not normally present on adult variants is the inclusion of a code button on kid’s devices. While this is included for the use of Morse code messaging, it is usually used to annoy parents.

The walkie talkie has come from a military background, created to ease the tasks of those in warfare to a device that can be used by children as a toy. This shows that it has entered many different sections of society and has become integral to many different communication requirements. Without the invention of this device, short range communication would not be as easy; the role they play in security, law enforcement and safety procedures cannot be underestimated and most probably form the most important developments the walkie talkie has brought us.



By: Thomas Pretty

About the Author:

Technology expert Thomas Pretty looks into the history of the walkie talkie and its various uses in military, public sector and entertainment spheres.

Camping With Kids

Monday, December 14th, 2009
There’s nothing 6 year olds or older kids love more than being in the outdoors. Camping is an outdoor recreational activity involving spending one or more nights in a tent, a primitive structure, a travel trailer or recreational vehicle at a campsite with the purpose of getting away from civilization and enjoying nature. National parks and other publicly owned natural areas are popular venues for camping. Camping is often restricted by law to designated sites in order to prevent campers from damaging the environment.

You can use camping to teach the kids independence and self-sufficiency. Survivalist campers set off with little more than their boots on the roughest of trails—the idea being to really gut it out. However, you might prefer to set up a tent within a few hundred feet of a campsite. This can serve as base camp from where you can set out on nature hikes, which include fishing and swimming.

Camping usually is a breeze with kids this age. They can help set up the tent and unload the car and can be trusted to remain nearby without continual supervision. One thing though—every child must have their own flashlight! Everyone loves making cool shadows on the tent walls and all hell breaks loose if sharing is required. Kids enjoy looking at the different kinds of insects that they can find. They might even catch frogs and minnows near the lakes and streams. You could let them examine these creatures and return them unharmed to the wild. Also, carry bug jars, nets, and buckets.

Hiking with six to eight year olds is generally a comedy of errors. Buy some of those disposable cameras or provide your kids with cheap cameras at the start of a hike. The novelty of being able to carry their own cameras will get you through your travels that day. Get the photos developed at a one-hour place if possible while you are still traveling - and then make a huge deal about their incredible pictures. Alternatively, you could provide them with some of the latest digital cameras that give an instant printout—however, you better be a “richdad” if you decide to make this choice. The next time you hike, the kids will be eager as long as you provide them with enough batteries and enough film or digital storage media!

Pick a theme for the trips. It helps you organize activities around a central concept. Much easier! Some favorites are “Western” including a chuck wagon meal, corn bread muffins and tea. You could come up with 20 ways to use a bandana around camp and practice tying knots with one-foot sections of rope. At night, you could have a small campfire with twigs and sing old western cowboy songs, try some cowboy poetry and learn a little about the stars.

The “Survivor” theme is another hit, focusing on back-to-the-basics camping essentials. Children this age can grate cheese, stir a cooking pot, fetch water, hand wash and hang laundry, clean up around camp and even pitch the tents with a little help. They love to hike (1 to 2 miles) with frequent breaks. Be sure to take along a trail mix snack the kids can make themselves. You could even make it a bit of a competition. Kids love competitions.

“Explorer” themes like Lewis and Clark are great for this age group, too. They naturally love to explore. Take along magnifying glasses, containers, nets and plastic cups to catch and examine insects. Set a firm, no touching policy for reptiles, insects and plants until they’ve been identified—this saves a lot of worry. Use handbooks to make identification.

Always involve the kids in the basics of the camp. If the adults do all the preparing, cooking, and cleaning, the kids don’t learn. The look on children’s faces is priceless when they’ve made their first wood campfire or pitched their first tent. The best advices is plan with the kids, but always leave plenty of room for running, swimming, biking or just kicking around a ball. Kids love to comb beaches, draw in the dirt and gather rocks. Always have paper and crayons handy, cards are good, too - but don’t worry about entertaining the kids 24×7. Camping is all about learning to entertain you without TV and games. Throw in a book or favorite magazine for yourself, and use your imagination to fill in the rest.

If the kids behave well, reinforce their behavior with a prize. The prizes can be simple little things usually picked up at the local five and dime store…i.e. bubbles, a comic book, a toy car, a box of crackerjacks…etc. You could also shop for your prizes online. Wrap the prizes to make it even more exciting. Gift wrapping material is available in an assortment of colors. With the short attention spans kids have, the new prize will tide them over ’til the next stop.

Take the illuminated “glow” sticks (the kind in the foil cover that you break and shake) to use at bedtime for night lights. Tie one to the ceiling of the tent when the children retire and untie and lower it when you retire. Bring one for each night of camping. The soft glow becomes softer as the night wears on and is gentle on adult eyes! You may prefer the green ones versus the red one—the red are brighter it seems.

The camp journal. Take plain white paper - about 5 sheets per kid. Get you kids to fold the pile in half and hold it together with a paper clip. Get them to color the front cover and title it My Camp Journal. Kids are very proud of their journal. If there are some kids who can’t read or write yet, tell them to do pictures instead of writing in them. They will have a nice memory of their first trip.

Bring cards. You can play many games with a simple deck of cards. They can even be a deck that is missing cards. Young kids don’t know/care. Go fish, and war, and let the kids explore their wild side under controlled conditions.

Pack lots of socks for each child—at least two pairs or more per day. If there is a drop of water, or mud puddle of any kind to be found, they will find it! Don’t expect the socks to come clean even with the best of detergents.

If you have an FRS (family radio service walkie talkies), one of the neat things you and your kids could do, is a game of high tech hide-and-seek of sorts… they can hide out, and you have to find them (providing they can see you when they hide, for safety’s sake)… and vice versa… lots of fun, and you can use the walkie talkies all the time, in stores when you go shopping and she is with her stepmother, or other times. A walkie talkie is a wonderful little gadget for kids!

Just use your imagination and remember what it was like to be a kid… ideas of things, little things you can do to make anything more fun will fill your mind almost instantly! One last thing, when talking with a kid about anything serious, get down to their level! Squat down or get them up on something high so they can see eye to eye with you and not feel intimidated… hug your kid, and be thankful everyday for the blessing they truly are… they can be a challenge, but they are there for you too… remember that.



By: Paul Banas

About the Author:

Paul B.

For more information about parenting dads, please visit: http://www.greatdad.com