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What is quiet talk on two way radios?
Quiet Talk is achieved through the use of a Continuous Tone-Coded Squelch System or CTCSS. This is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel. It is also sometimes called tone squelch. Where more than one user group is on the same channel (called co-channel users), CTCSS filters out other users if they are using a different CTCSS tone or no CTCSS.Receivers equipped with a CTCSS circuit usually have a switch that selects normal mode or CTCSS mode. When enabled, the CTCSS radio circuit, instead of opening the receive audio for any signal, causes the two-way radio receiver's audio to open only in the presence of the normal RF signal AND the correct sub-audible audio tone (sub-audible meaning that the receiver circuitry can detect it, but is not apparent to the users in the audio output). This is akin to the use of a lock on a door. A carrier squelch or noise squelch receiver not configured with CTCSS has no lock on its door and will let any signal in. A receiver with CTCSS circuitry (and with it enabled) locks out all signals except ones encoded with the correct tone. CTCSS can be regarded as a form of in-band signaling.
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About 10 miles depending on the conditions. (high buildings will decrease the range)
Ok well X-rays and Radio waves are similar since they both are on the EM Spectrum. They both travel the sames speed which is like the speed of light. I'm actually doing an… apa format paper right now and I have to research radio and ex-rays, so this information is accurate because I have been researching for SEVERAL hours.....ok now back on task...hehe. Well X-rays and Radio waves because they are the same as light and electromagentic radiation ;). Like I said, they are both on the EM spectrum except the radio waves is the first one so its 700 nanometer while the x-rays is the second to last (closer to 400 nanometers). If you dont really get any of this... if I were you I would do more research :) HOOOPPEE THIS HELPED
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.
Quiet volcanos are ones that explode slowly. Two characteristics of quiet eruptions are slow flowing lava and broad sheets of lava. The lava from a quiet eruption stays runny …and flowing for a longer period of time than an explosive eruption does.
The South African Police Service use various systems throughout the country. They are using an ETSI Tetra network operating in the 380MHz to 400MHz in the Gauteng Province. I…n Cape Town they use an older Motorola Smartzone network in the 406MHz-420MHz range. The Eastern Cape is currently being upgraded to a similar system as in Gauteng. The remainder of the country use conventional analog radio operating between 406MHz and 420MHz. Their aim is to implement Tetra across the country in the near future.
Ihave a manual for a Binitone action 850 same machine will send you photo copy FOC
The Motorola Radius GP 300 was designed to be a business-class portable targeted at business, industry, school districts, and other non-public-safety users. The Motorola HT …1000 portable was designed to be a public-safety grade portable, and as such is built much stronger than the GP 300. The HT 1000 also supports many more signaling formats than the GP 300 does.
There are a number of options for one wishing to purchase long range two way radios. These can be found on sites such as Buy Two Way Radios, Overstock, Amazon and eBay.
We used these radios at Amgen for theCIS department in Thousand Oaks, CA. I was able to go to Sears 4.3 miles away and still communicate back to Amgen, Now take into acc…ount we had repeaters on top of the higher buildings around campus. We took the same radios to Pismo Beach in Oceano Dunes OHV area and was able to communicate from radio to radio 2-3 miles apart in the dunes. Many factors are to be concidered on the actual distance you can communicate such as: are there any repeaters and direct line of sight play an important factor. So in conclusion I would say between radio and radio 2-3 miles obstructed and 3-5 miles unobstructed.
Two way radios are used to transmit and receive. What I mean by that is a two way radio allows two people to talk to each with similar devices on the same radio frequency. It'…s rather unique! One (the operator) can talk, and the other listen. This device allows police officers, detectives, and many other jobs easier.
Not without completely altering their interior electronics ... it would be cheaper to buy the two-way radios.
Range and that the communication is not private, anyone can listen in.
No the circuits are not designed to handle video frequency
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.
When one wants to purchase a two way radio headset, one might start by looking at any local brick-and mortar (offline) electronics store or visiting online stores like Amazon,… Walmart or BuyTwoWayRadios. A popular feature of these radios is the ability to use a push-to-talk feature that allows someone to talk to someone else hands-free. This is done with a microphone that is held in a frame that is placed close to the mouth.