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A typical VHF survival craft transceiver

Jun 30, 2015  I'm back!!! This time stronger then ever! Check it out guys Survival Craft comes to Windows PC! Furniture blocks are sculpted from up to 16x16x16 smaller sub-blocks. Sub-blocks within a single furniture block can be made of different materials and painted to different colors. Through crafting, furniture blocks can be combined, made interactive or made to work with electricity. Furniture designs can be combined into packs, shared between worlds and uploaded to Community Content.

Very high frequency (VHF) survival craft transceivers (SCTs) are lightweight, portable, two-way, handheld VHF transceivers capable of radiotelephoneon-scene communication between rescue units and the survival craft. Essentially these are hand-held VHF radio's that are used in any survival craft, such as a life boat or life raft. SCTs with re-chargeable type batteries may be used for on-board communications as well.[1]

The International Maritime Organization (IMO) requires the following from SCTs:

Band

  • Must be able to be operated by unskilled personnel
  • Must be able to transmit and receive on 156.8 MHz (Channel 16) and 156.3 MHz (Channel 6)[2]
  • Withstand a drop of 1 meter on a hard surface
  • Watertight to a depth of 1 meter for 5 minutes
  • Power Minimum of 0.25 watts
  • A power reduction switch to less than 1 watt must be available where power exceeds 1 watt
  • Antenna must be vertically polarized and omni-directional
  • Battery power capacity for 8 hours on a 1:9 duty cycle[1]

The SCTs used for everyday operations have a rechargeable NiCad battery, and some radios that are strictly SCTs use a non-rechargeable lithium battery pack. These batteries must be replaced on or before the manufactures marked expiration date. SCTs are required to be capable of radiating a minimum radio frequency (RF) power of 250mW (milliwatts) A switch must be provided on the SCT if the transmitter has a power excess of one watt, this will allow the operator to reduce the power to less than one watt, resulting in a reduced battery power loss. Along with other requirements the IMO has made it mandatory that the antenna be vertically polarized, allowing all radio antennas to be within the same plane, this ensures that the energy transfer from each radio is high. The IMO requires that cargo ships between 300 and 500 gross tons must carry two SCTs. Passenger ships carrying more than 12 passengers on international voyages, and cargo ships of 500 tons or more must carry three SCTs.[1]

Classification[edit]

In lione[clarification needed] to the ITU Radio Regulations, article 1, survival craft transceivers are classified as follows:

  • Radiostation
  • Radiocommunication service
    • Maritime mobile service or aeronautical mobile service

See also[edit]

References[edit]

  1. ^ abcBass, Richard K. (2000). GMDSS a study guide for the Global Maritime Distress Safety System. Portland, Oregon: Tele-Technology. p. 11-1. ISBN0615112862.
  2. ^Smith, Seaton, P.C., J.J. (1994). GMDSS for Navigators. Linacre House, Jordan Hill, Oxford: Butterworth-Heinemann Ltd. p. 41. ISBN075062177X.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Survival_craft_transceiver&oldid=815707533'
Survivalcraft Computer
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Tech-Specs
CPU: 8-bit 2-core about 20 hz
RAM: 2-8 kB
Storage type: SSD
Storage space: 64 kB
Screen: 2-8 fps. 16:9 format. 32x18 resolution (576 pixels) Color Screen (New 1-LED blocks in 2.1 update)
Keyboard: Modified QWERTY
Touch-Pad: Big Touch-Pad with support for left, right, up, down. Size is 2x4.
GPU: 1-4 GB Memory
Sound: Dual Speaker
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Built-in Programs:
•Calculator. Uses an ALU that supports 8-bit Addition and Subtraction, and 4-bit multiplication and division.
•System. Will control the system, and work as a control center.
•Text. Program for writing.
•Use. Acts as an activity monitor and will tell you how much RAM is in use, how much CPU-power is used, what CPU-cores is in use etc.
•Photos. Photos will be your image library, where you can find all of your screenshots.
•Video editing. This is where you make movies that can be shown in 'Movie'
•Movie. The Movie-application is where you watch the videos you make in 'Video Editing'
•Music. This is where you make music.
•Listen. Listen is the application used for listening to music you have made in 'Music'
If anyone that makes games want it, their games could be modified to fit in the computer, so that they can be played. If you have an other application than a game, that's also great.
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Operating System:
I am currently working on my own operating system for the computer. Because the CPU is multicored, it will most likely be possible to use two programs at the same time - Multitasking! The OS don't currently have a name, but if anyone has an idea, it would be great. Here is how the UI with it will be:
When the power-button is hit, the computer will boot. While it is booting, it will show EDVSSJ on the screen and also a loading symbol.
When booted up, you will come to a meny where you have three choises (Each on its own line, and you use your touch-pad to control which you will open). These are 'Apps', 'System' and 'Power'. If you click apps, you will come to a page where you can choose one of your apps to open, by going between pages for each application. By choosing system, you will launch the system application, which is the one where you can control your system. By pressing power, you will turn off your computer.
I know this looks a little, ehhhh simple, but it is hard to make a super great interface when the screen almost can't be bigger than 32x18 pixels to have an okey framerate (Bigger Screen = More pixels to update)