Archive for June, 2012

Save the 2 Way Radio

Friday, June 22nd, 2012

Hi Friends,

Commercial grade two way radios are built to meet or exceed Military Specification. This means a typical day in the life of a two way radio can include getting dropped, shaken, vibrated, heated to over 100 degrees and cooled below minus 30. In spite of these rigors the radio will survive.

Commercial grade two way radios are tough. They are built to take a beating and continue to perform.

Something a radio can not survive. Being dropped from more than just a few feet can kill a radio. Too much water or moisture kills radios. Getting run over by equipment has destroyed more than one radio. And the most heartbreaking death for a radio is abandonment. Thousand of radios are simply lost on the work site every year.

Fortunately man invented the speaker mic. Speaker mics plug into the audio port on the side of a radio and are clipped to a lapel, shirt pocket or collar. Because the radio user talks and listens through the speaker mic there is no need to remove the radio from the user’s belt or waist band.

When speaker mics are used nearly all the dangers a radio might become victim to are removed. This is particularly true of abandonment.

We would like to encourage the use of speaker mics. When you purchase new commercial grade radios from 2 Way Radio Express we will include speaker mics at half price. Speaker mics sell for $55 to $125 each but for a limited time they are half price when you purchase new radios.

Doing business with us is easy.

Best Wishes,
Manzie R Lawfer

How Far Do Two Way Radios Broadcast?

Sunday, June 3rd, 2012

Hi Friends,

The distance two way radios broadcast is determined by radio power (measured in watts), antenna height and environmental factors.

Generally speaking more wattage means more distance. Hand held two-way radios have between 1 – 5 watts. Mobile radios, the kind you might find in a fleet of delivery trucks, broadcast between 25 -100 watts.

A general rule is to expect a 1 watt radio on flat land to provide about 1 mile of coverage. Doubling the power increases the range by about a third. A 2 watt radio on flat land provides about 1.3 miles of coverage. A four watt radio broadcasts about 2 miles.

The need for power is negated by the height of the broadcasting antenna. It does not take much power if there is little between the sending and receiving radios. For example the radios that the astronauts used on the moon to successfully talk to earth had less than 1 watt. This is because there is nothing between the moon and earth to block the signal. In effect the height of the Moon acted as an antenna.

The third factor in determining distance is the broadcast environment. If a radio signal is blocked by buildings, electrical interference, trees or mountains the signal will not reach the receiving radio.

A combination of power and antenna height solve most of these problems.

You may have seen radios at a discount store or the local sporting goods store advertising radios with talk distances of 10 miles or 12 miles or 18 miles. This is purely bogus. If bogus sounds too harsh to you, just ask the seller to demonstrate the advertised coverage. He will not be able to do it.

Give us a call to help you determine the best 2 way radios for your application. Doing business with 2 Way Radio Express is easy.

Best Wishes,
Manzie R Lawfer