These versions are the original UV-3R, the UV-100, UV-100 MKII, UV-200, UV-200 MKII, UV-3R MKII, UV-3R+, UV-5R, and the UV-5R Plus. KYD (China New Century (Quanzhou) Communication Electronics Co. , Ltd) also sell a version of the UV-100, UV-200, UV-300, UV-500, UV-600 and UV-5H as well as a range of waterproof handhelds. There are also some `badged` versions of the
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above available. The team that developed the UV-3R have started a revolution in ham radio. We now wait for the VHF/UHF mobile range to arrive (now arrived) and then the HF range (on its way!) see here FT-808 on You Tube. There are now many radios with variations on the "UV" theme. These include the Ronson UV-8R, Quansheng TG-UV2, Waccom UV-5R (WUV-5R) and UV-6R, etc, etc, etc. There are numerous versions of the UV-5R. If you want to know more about the UV-3R and to contribute to the understanding of how it works then I suggest you join the Yahoo group at Yahoo UV-3R Group In particular they maintain a very useful FAQ document which makes things a lot easier to understand. The remarkable UV-3R MKII transceivers have 3 main i. c`s (RX/TX, micro and FM radio) to provide a very low cost 2W dual band easy to use radio covering 136-174 and 400-470Mhz. They use the Fuji type NP60 (or Kodak Klic-5000 or Casio NP30) mobile phone battery so you do not have to buy any special spare batteries (some of the newer models use special batteries i. e. UV-3R+). The radio includes a dual band antenna for 2M and 70cms, charger and UK adapter, belt clip, manual, Li-on battery and charger cradle (although you should charge the battery in the radio and I don`t recommend you use the cradle). There are 99 memories configurable with TX/Rx Freqs, CTCSS, CDCSS, wide/narrow, hi/low power, etc which can be set through the keypad. Computer configuration...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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