CCT1023 Group A (13 September 2009)

Today is the dateline to hand up our 3rd individual assignment. Then the class is as usual and Miss Azura give the lecture about chapter 7. We're also asked to find what is RCA.

RCA

An RCA connector is a plug and a jack designed for use with coaxial cable for frequencies ranging from the very lowest up to several megahertz. An RCA connector is sometimes known as a phono plug and jack.

The male RCA plug consists of a central pin measuring approximately two millimeters (mm) in diameter, and an outer shell whose inside diameter is approximately six mm. The plug shell is slotted rather than threaded, to facilitate quick insertion to, and removal from, the female jack or receptacle. Contact is maintained by physical pressure between the slotted shell of the plug and the smooth cylindrical barrel of the jack. The plug shell is connected to the outer conductor, or shield, of the coaxial cable, normally at electrical ground. The center pin of the plug is connected to the cable center conductor, which carries the signal. In the jack, the barrel is grounded and the center hole is plated inside to conduct the signal.

RCA connectors are suitable for audio-frequency (AF) applications. They are also used in radio-frequency (RF)systems at low and medium frequencies, and at power levels up to approximately 100 watts. At higher frequencies or higher power levels, larger connectors are necessary. RCA connectors are designed for cables with small outside diameters (less than 6 or 7 mm) and are intended for indoor use only.

CCT1023 Group A (9 September 2009)

Today we finish our chapter 6 (Telecommunication) in class. And after class, we discuss about our next assignment which need to summit on 13th Sept with Miss Azura.

CCT1023 Group A (6 September 2009)

No comment...Class as usual as always..(^-^)

CCT1023 Group A (2 September 2009)

RazakSAT

The objectives of the project are to provide high-resolution images for Malaysia and build Malaysian space technology capabilities through ATSB. In order to meet the technology objective, a cost-effective high resolution imaging system for Earth observation specifically for a small satellite less than 200 kg was implemented. RazakSAT carries the Medium-sized Aperture Camera (MAC) that will provide 2.5m resolution panchromatic and 5.0m resolution multi-spectral images. This project involves the design, development, launch and operations of the satellite.

The RazakSAT satellite is planned to be launched near in the future on a USA launcher Falcon 1 owned and operated by the company Space Exploration Technologies (SpaceX). It will be a dedicated launch from kwajalein in the Republic of Marshall Islands which is situated very close to the equator to give the best orbital injection for RazakSAT , i.e. near equatorial orbit (NEqO). RazakSAT's images would be applied to forestry, fishery, migration and other areas that will benefit the nation.

It carries an electro-optical payload, a Medium-sized Aperture Camera (MAC) a pushbroom camera with 5 linear detectors (1 panchromatic, 4 multi-spectral). The RazakSAT satellite will be operated through its ground segment in Malaysia, consisting of a Mission Control Station (MCS) and Image Receiving and Processing Station (IRPS). ATSB's engineers are operators at the MCS and they will execute the mission plan, command generation and telemetry receiving, archiving and analysis.

ATSB is also involved in Sg Lang Ground Station implementation project committee. ATSB has assisted in development of the system specification to support RazakSAT Mission Control Station (MCS) and Image Receiving and Processing Station (IRPS).