Wednesday, 21 Nov 2018

Commonly known as “ham radio,” amateur radio is a hobby that’s been around for decades. Although it’s not nearly as popular as it was prior to the advent of the Internet, amateur radio is still enjoyed by a wide range of hobbyists. If you’re interested in trying your hand at ham radio, you’ll need to get your hands on a Technician class license. This is essentially an entry-level license for new operators and enables them to legally access all amateur radio frequencies above 30 megahertz. In order to earn this license, you’ll need to complete an exam comprised of 35 questions that pertain to amateur radio operating practices, regulations and theory. Arming yourself with the following study tips will increase your odds of passing this test with flying colors.

Focus on Pertinent Material

When studying for your Technician class license exam, you’d be wise to focus on material that pertains specifically to the exam. Although every amateur radio enthusiast should have a copy of the latest edition of the ARRL Handbook for Radio Communications, your primary study aids should be the ARRL’s most recent licensing manuals. These manuals will provide you with a bevy of useful information that directly ties into the test you’ll soon be taking.

Procure a Good Practice Console

A good practice console can be a boon to hands-on learners. Having access to a high-quality console will enable you to put the information you learned from your study materials to practical use. A console that’s equipped with top-of-the-line directional couplers and other prominent components will serve you well before and after the licensing exam.

Don’t Get Hung Up on Math Problems

If your math skills leave something to be desired, there’s no need to panic. It’s true that the Technician class exam features math problems, but these problems by no means represent the majority of the test questions. You need to correctly answer 75 percent of the questions to pass, and fewer than 10 percent of the questions constitute math problems. This means that you can pass the exam without answering a single math problem.

While it can be argued that amateur radio is past its heyday, that doesn’t change the fact that millions of hobbyists the world-over are still crazy about it. Anyone interested in obtaining a Technician class license is sure to benefit from the pointers discussed above. Focusing on pertinent study materials, having a … Read the rest ...

It’s just the end of May and the scorching heat has already become unbearable. Hasn’t it? So what do you choose to stay cool during such bad hot days? Do you still rely on fans or are happy with keeping the temperatures low with air conditioning?

If you are among the ones who utilize fans to keep themselves cool and also save on your electricity bills during summers, we have a question to be answered – Do fans actually cool the air?

Fan just cools you down and not the air

You may feel that fans keep your room air cool. But that’s not true. All that fans merely do is to make you feel cooler. Fans do not do anything to cool the air. They just move the hot air surrounding your skin, blowing away the heat around you. This helps your body’s natural cooling process to work more efficiently, thereby, cooling you down. Here are some of the attributes of ceiling fans, which allows you to understand the mechanism of it, as to how it cools your body.

Leaving the fan on in an empty room is total waste

So basically, a fan can help lower down your body temperature but, it will do nothing to cool the hot air inside any room.  If you are not in the room and are still leaving the fan on, thinking that it will ease the heat in the room by cooling the air, you’re wrong. If you are not in the room and have still left the fan on, you are just wasting energy resources and adding on to your monthly bills with some more electricity costs.

A fan near a window can help bring cooler air inside

It is true that a fan does not cool air. But there is an exception to this rule. If the temperature of air outside your house is cooler than the air inside, then you can utilize a fan to draw in some cool air from outside. This can be done by placing a fan near the window. This way the cooler air from outside will enter the room and the hot trapped air inside will escape through the window, leaving your room a bit cooler if not much.

You should not that in this case too, the fan is not making the air cool but it is just drawing in some already … Read the rest ...