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Different formats posse the base band signal information in different ways. So you may ask what the information in base band signal is. The signal information and their tasks are as follows. Chrominance information: The chrominance portion of the base band signal is the collection of the colour/ hue information. This portion of base band signal says what will be the ratio of red-green-blue colour at certain position of television screen. Luminance information: The luminance portion of the base band signal commands the brightness information of certain position of television screen. Audio: The audio portion of the base band signal is actually the audio information of corresponding video signal. Sync pulse: This portion of the baseband signal posses various types of synchronizing pulses for different purpose. Such as for audio-video synchronization, synchronization for scanning sequence (for horizontal and vertical scanning in television receiver), frame/fiel...

For computer networking purpose most commonly used cable is ethernet cable. Ethernet cable is mainly two types, UTP and STP. UTP stands for Unshielded Twisted Pair and STP stands for Shielded Twisted Pair. Among those UTP is used for most of the networking purpose. Depending on the network devices, UTP cable is two types- straight and cross. Here is a short description on this network cable. Figure: Network Cable (UTP - Unshielded Twisted Pair) Generally mainly used two types of UTP cable. 1. Category 5 (Cat 5)  2. Category 6 (Cat 6) In UTP, there are total eight (8) cables in four (4) pairs. Those are Internationally there are two types of standard to make straight and cross cable. 1. T-568 A (generally called  standard A) 2. T-568 B (generally called  standard B) Note: From the above design it can be observed that , if  interchange 1,3 and 2,6 then A change into B or B change into A. Or simply interchange between Green and O...

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The only way to find out if your feed horn is exactly in the focal point of your satellite antenna is to measure the distance from the feedhorn to the reflector edge. This is called the ABCD measurements. These can be found in the installation manual of each antenna (provided by the manufacturer). If not then the antenna installer should have these values.

Determining the focal length of a parabolic dish (axi-symmetric, circular) Focal length = f Depth = c Diameter = D f = ( D * D ) / ( 16 * c ) Measure the depth using a tight fishing line across the dish and a rule to measure depth c.  Parabolic dish showing measurements needed to determine focal length. If the f/D ratio is low, say 0.25 to 0.35 then the feed will be close to the dish and needs to spread its power at a wide angle to efficiently illuminate the dish.  The feed therefore needs to be of small diameter.   If the f/D is 0.25 the feed is level with the dish aperture, which may make it difficult to make a satisfactory feed. If the f/D is large like 0.5 to 0.75 then the feed will be further away from the dish and needs to project its power into a narrower angle.  The feed needs to be of larger diameter.   With a open circular waveguide antenna feed (scalar feed) the focal ...

  C-band Interference due to Aircraft and How to Mitigate its Impact Introduction Terrestrial Interference like WiMAX, BWA and IMT has caught a lot of attention from the users and satellite operators because of the widespread deployment of these wireless networks and their persistent impact on C-band Fixed Satellite Service (FSS). Among other interfering sources, aircraft altimeter is also a common source of interference for C-band satellite reception. Even though it is not generally known to users, its impact on C-band satellite service can be significant. This article will examine the causes of interference due to aircraft and how to mitigate its impact. Satellite C-band is heavily used for satellite communications throughout the world for a multitude of service. Due to its ubiquitous coverage, high availability and instant connectivity, C-band FSS plays a key role in the socio-economic development of many countries to provide vital services and is also crucial for disaster...

C Band - Receive Wave-guide Filters http://www.a1microwave.com/c-band-rw-radar-reject-filters.asp

Table of Recommended Bitrates for use with psycho acoustic audio compression systems NOTE : The audio source here is understood to be derived from  Compact Disks  FM Radio, (analogue or digital) TV audio, Analogue Tape & Long Play Records (LPs) Speech sources Raw bit rates (32 kbs, 56 kbs, 192 kbs etc...) as a measure of the quality of encoded phycoacoustically compressed audio are a poor source of reliable information.  The sampling rate of the incoming audio can be at (8000 Hz, 22050 Hz, 32 kHz,  44.1 kHz, 48 kHz, 96 kHz etc ...). One can also re sample from one digitization rate to another (48 kHz to 44.1 kHz is quite common).  The incoming audio itself may be encoded at bit depths of either 8 bits, 16 bits, 24 bits or 32 bit integers -as well as 32 bit floating point. In some cases the incoming sampling system may be signed or unsigned, as with mu-Law or A-Law sources related to telephony.  Even digital origin sources may have been t...