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It depends on the terrain, buildings, etc but the UHF PD782 I have used can access a repeater well over 15-20 miles away in digital with no problems. For simplex (no repeater) I have not tried that but you probably could get a mile to possibly a couple of miles again depending on the terrain, buildings, etc - much like what you would see with a UHF FM analog portable.
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How about 1957, when RCA came out with the first portable AM radio (at least in the States)? I still have it and it works. It used germanium transistors and was a real b…attery hog. It was an expensive item for the time and of course, the odd, round 9 volt battery is no longer available.
Yes, it is possible to use direction finder devices (usually radio receivers with directional Antennas abbreviated to "DF receivers"), the most common and oldest method is tri…angulation of the the two way radio signal by two and ideally three DF receiver stations, these will compare results and they will be able to locate a two way radio device quite accurately as long as it is transmitting reasonably continuously. At VHF & higher frequencies there are direction finders that use a special antenna array on top of vehicle and use methods to detect the Doppler effect by doing timing comparisons of the received two way signal by switching the receiver to different positioned and phased antennas and the results from the receiver detected pass through a signal processor which can process and and indicate the origin of a two way signal with reference to the DF receiver antenna array position and display it on a screen. Cell phones locations are detected in a similar way by using various cell sites and special processing Software to get an accurate fix on the cell phone position.
Is there a way to utilize the factory installed satellite radio antenna in a car for a portable satellite radio?
yes because you are using the same radio frequency but as a portable device
Not so complicated as that. Your walkie-talkies will work anywhere. However, when you are in port, your use of the particular spectrum (radio bands) that you are using is gove…rned by the rules of that country, not the rules of the ship.
With an AM radio run out a long length of wire (the longer the better), wind the wire around the radio a few times and connect the end nearest the radio to a cold water pipe. …For FM make sure that the supplied antenna is fully extended. You could run a counterpoise wire connected to the -ve battery connection this should be about 1m long. Make sure that the counterpoise is stretched in the opposite direction to the supplied antenna. You could connect an external FM antenna if the radio has a suitable socket. With either band positioning is important. Placing the radio near a widow and rotate the radio or adjust the position of the antenna for best reception.
Two way radios can be purchased in any hardware or audio store. You can also find them at stores such as Best Buy, Future Shop, Canadian Tire and Walmart.
Two way radios can both transmit and receive signals. It uses two different radio frequencies to carry the two conversations simultaneously.
It is possible for other people to overhear the message.
It a radio which can both send and receive. You can hear someone else in them, and they can hear you.
If you are looking for a portable radio, try searching electronics stores such as Best Buy and Future Shop. You can also try looking online at websites such as Amazon, eBay, W…almart and Target.
Two way radios are not only fun they are very convenient when traveling. Any electronics store such as Radio Shack would sell these. Online you could check Amazon.
The Motorola Two-Way Radios are new products produced by Motorola company. Motorola Two-Way radios are used to transmit and receive messages allowing the operators to communic…ate with each other.
There are many retailers from where one can purchase two way radios such as Ebay and Argos which offer a wide variety of two way radios at various prices and specifications.
There are a very large number of online retailers who sell portable digital radios. Popular websites are Amazon, Walmart, JR, Office Depot, Radio Shack, Best Buy and K-Mart.
Someone could buy a digital two way radio from Motorola Solutions USA. One could also buy one from Amazon. It is also worth checking out eBay for cheap used ones.
One can purchase a portable two way radio on many websites online. Amazon has a wide selection of two way radios that go from the price range of $20.00-$500.00.