2 Way Radio Frequency

2 way radio frequency

direct contact with Direc Way satelitte dish? Aftereffects?

what do i do if i stood next to a direc way satellite dish. *after noticing that it had a caution label on it stating not to be within 2 feet of it(transmitting radio frequency) i was also on my motorola trying to get my GPS up…What now?

The warning is not for your safety. The warning is so that you do not block the signal. Radio waves are not harmful. Your exposed to radio waves just about everywhere you go. It will not harm you or your electronics

Hard Leather Case For Motorola 2-Way Radio GP328 GP340 GP380

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Cobra S.O.S. 39 Plus 2-Way CB 12V Mobile Radio with Magnetic Mount Antenna

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MIDLAND GXT1050VP4 MIDLAND GMRS 2WAY RADIO 50 CHAN SOS WEATH SCAN

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KENWOOD TK-3100 WALKIE TALKIE 2 WAY RADIO

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2 KENWOOD TK3100 WALKIE TALKIE 2 WAY RADIOS

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RADIOSHACK 2-WAY RADIO HANDS-FREE HEADSET 21-0102 NIB

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2-PCS THE NEW two way radio ICOM IC-V82 VHF 136-174MHz lower cost

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Uniden FRS 3 Pack 22 Mile 2-Way Radios with Charger

$77.08

Motorola MH230R Talkabout 2-Way Walkie Talkie Radio NEW

$49.88

Vertex Standard VX-160U, Commercial 2 way radios – Lot Of 2

$126.12

NEW 2-Way FRS Radio Battery Pack for Midland GXT-850VP4

$2.49

Motorola HT1250 Series 2 Way Radio User Guide NEW

$10.00

RADIO TOWER BRACKETS, MOUNTING, 2 WAY RADIO, G25, HAM, POLICE, FIRE

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OEM Kenwood Stubby Antenna for 2-way Radio Series TK360G TK370G TK372 TK373

$6.29

Cobra 40 Channel Citizens Band 2-Way Mobile Radio model 10 SOS

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Motorola Radius CM300 UHF 438-470 MHz 32 Channel Mobile 2-Way Radio Used

$250.00

Midland GXT1000VP4 FRS GMRS 2 Way Walkie Talkie Radios

$74.99

Lot of 25 Kenwood TK-3130 ProTalk XLS UHF 4 Mile 2 CH TWO Way Radios For Parts

$109.99

Lot of 50 Kenwood TK-3130 ProTalk XLS UHF 4 Mile 2 CH TWO Way Radios For Parts

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Midland LXT114VP Walkie Talkie 2 Way Radios with Rechargeable Batteries NEW

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Two-way radios, eXRS eXtreme Radio Service 2-Way Radio Value Pack

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REALISTIC 40 CHANNEL ROAD EMERGENCY 2-WAY CB RADIO TRC-460

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Midland LXT380VP3 Walkie Talkie 2 Way Radio, Rechargeable Batteries, 22 Channels

$63.99

Uniden 2-Way Radios GMR1235-2

$19.82

COBRA FA-CT DESKTOP BATTERY CHARGER NiCD NimH BATTERIES 2 way radios

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NEW Midland XT20 22-Channel GMRS Radio 2 two way Hands-free eVOX water resistant

$29.00

DAKOTA ALERT M538-HT 5 CHANNELS 2-WAY HAND HELD RADIO

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15 MOTOROLA GP300 2-WAY RADIOS UHF

$305.00

Motorola DTR 410 Digital Business 2-Way Radio with charger

$61.00

Midland GXT760VP4 5 Watts Walkie Talkie 2 Way Radio Value Pack GXT, NEW

$104.99

For Kenwood TK Types 2 Way Radio Earphone w Hanger

$7.37

Midland GXT795VP4 5 Watt Walkie Talkie 2 Way Radio Value Pack GXT,CAMOUFLAGE NEW

$111.99

MOTOROLA T5030R 16-MILE FRS/GMRS 2-WAY RADIO

$5.50

Motorola BC130 AAH84RCJ8AA2AN 16 CH VHF 2-Way Radio Walkie Talkie

$69.95

3 Simple Steps to Choosing the Right Radio Frequency

When the RC frequency spectrum was first introduced to provide controlled facilities for radio control (RC) modelers, it was limited to a set of just six. These frequencies were not labeled with channel numbers as they are today, but were represented by multi-colored flags; purple/white for 72.320 MHz (megahertz), red/white for 72.240 MHz, etc. Having only 6 frequencies to choose from was quite restrictive and meant a lot of RC airplane pilots had to be grounded, waiting to take their turn on a given frequency.

The RC model airplane frequency spectrum today is much broader, consisting of a much larger batch of 50 channels in the 72 MHz band in the USA, a similar batch in the 35Mhz band in the UK and other bands according to country. In addition, there remain a few 27 MHz channels shared across many uses including for ‘park flyer’ model airplanes, and a handful of other more specialized channels reserved for licensed amateur radio operators. For convenience, I’m just going to refer to the 72Mhz band as the band allocated for model airplane use in the USA. You will need to read that as the band allocated for model airplane use in your own country.

So now you’ve decided to buy your RC model and radio equipment you also need to decide which radio frequency you are going to operate on. Unlike most other features of the sport, choosing a popular channel which is used by lots of other people is not a good idea. Choosing a standard 72 MHz frequency for your radio can be as simple as going to the local hobby store and
purchasing one with a standard radio setup. But randomly choosing a channel can result in a problem if you don’t do a little investigation first.

Firstly, decide whether you are going to be a park flyer using 27 MHz or going for a more advanced setup on 72 MHz. The 27 MHz channels are primarily dedicated to what are considered “park flyers”. These pre-packaged systems usually come with everything you need to get up and flying and are intended for the casual flyer that just wants to get out, get in the air, and not mess with the higher cost of a more complex airplane and radio setup. Choosing a RC model airplane park flyer package with a pre-set frequency needs little to no investigation since you have little choice as the packages give you a choice of only 3 or 4 channels, some FM, some AM. Channel conflicts in a RC park flying situation are less common due to the large number of parks and flying areas available to the casual pilot. But if you do invest in a park flyer then be aware that there may well be other pilots out there in the park using the same frequency as you – and that can mean expensive trouble when you lose control of your airplane, or even worse if some stranger accuses you of causing his airplane to crash.

Second, if you are going for 72 MHz then visit your flying field and find out what other people are using. Imagine arriving to your favorite RC model airplane flying field only to find someone else already using the channel you have just paid out good money for. Some clubs have rules pertaining to what happens in this situation. As only one pilot can operate at a time on a given frequency this usually means pilots having to switch off and take turns using the frequency – and some means of the club controlling the changeover process either by physically taking control of the transmitter or just having a procedure written into the club rules. If you are flying at a busy site that is not a sanctioned flying club with rules and bylaws, you might find yourself sitting out and unable to fly for the day.

The smartest way to choose an RC frequency for your radio is to do some legwork first. Visit the field where you will do most of your flying. Investigate what channels are already in use and which channels are seldom used. Finding one that is infrequently used or not used at all will allow you to buy, secure in the nowledge that you will be able to fly with minimum interruption.

Third, make sure you can change the frequency after you have bought the equipment. If you take care to check before you buy whether the system will allow you to do a manual crystal replacement then if you run into a problem you can change later to a channel which is less busy. Some crystal changes you can do yourself while others have to go back to the factory to have the work done. Regardless of your current situation, if you already have an RC radio setup, or just thinking about getting one, doing a little footwork up front can go a long way.

About the Author

Bruce Bird makes it easy for the beginner to quickly get a grasp of the broad range of exciting activities that make up airplane modeling. To receive his free 5 part mini-series visit http://www.modelairplanesecrets.com/adtrackz/go.php?c=radiofreq