ABOUT KEDAH HISTORY

Recorded history shows that in the 5th century AD, traders plying the east-west trade route stopped at the port of Kuala Muda, using Gunung Jerai, Kedah's highest peak, as a navigational point.

The ruins of ancient Candi (temples) in the Bujang Valley show that a Hindu-Buddhist civilization existed here and may have been one of the first places to have come into contact with Indian traders. How important this kingdom was, is still being researched as more artifacts are unearthed.

During the 7th and 8th centuries, Kedah paid tribute to the Sumatran Srivijaya Empire. After the decline of the empire, it became a vassal state to the Thais until the 15th Century when the rise of Malacca led to the Islamization of the area. Kedah faced Portuguese and Achehnese attacks in the 17th century, but it again fell into Thai hands in 1821.

The Thais handed Kedah over to the British in 1909, and after the Japanese occupation, it became one of the states of the Malayan Union and subsequently the Federation of Malaya in 1948.



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SEE AND HEAR MORSE CODE

Wednesday, January 26, 2011

Do It Yourself - HF Long Wire Antenna

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Store Up

Mount

Common Mode Choke

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Because of the value of Morse Code communication in the Amateur Service is primarily recreational in nature and manual telegraphy proficiency should no longer be a compulsory licensing requirement for any class of Amateur Radio license. So, our license will be open for work at HF band later 1 think. It is the time we prepare a good HF antenna in our station. This is a HF antenna and have 7 meters long wire as a radiator which is wrap on a 5 meters fishing rod. 2 wires with 3 meters and 7 meters long forms a grounding. I also connect the antenna ground to the window frame and air conditioner case to increase the possible area of grounding. It will use together with the antenna tuner for operation on each HF bands from 1.8 MHz to 29 MHz. So the better earth can help for effective matching. A common mode choke is also be used and series at the coaxial cable for prevent the in-phase noise and produce a good weak signal reception.



Copy From http://vr2zxp.no-ip.org/project/hfant/hfant.htm

Thanks, 73s.

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ABOUT AMATEUR RADIO

Amateur radio service is defined in the Communication and Multimedia (Spectrum) Regulations 2000 as a radiocommunications service (covering both terrestrial and satellite) in which a station is used for the purpose of self traning, intercommunication and technical investigations carried out by authorized persons who are interested in radio technique solely with a personal aim and without any pecuniary interest.

AMATEUR RADIO OPERATOR'S CERTIFICATE

Regulation 27(1) of the Communications and Multimedia (Technical Standards) Regulations 2000 states that no person shall undertake or conduct any activity in designated skil area unless that person is certified. Amateur radio operator has been gazetted as a designated skill area category under the regulation, hence to operate an amateur radio station a person needs to have an appropriate proficiency and skill i.e. certified in this area.

INTERFERENCE

Please ensure that the radio transmision does not cause interference to any other radio services. Regulation 15(1) of the Communications and Multemedia (Technical Standards) Regulations 2000 states that no person shall intentionally design, install, operate, maintain or modify any communications equipment in a manner is likely to cause interference with, impairment, mulfunction of, or harm to any communications equipment or any other equipment.

Regulation 15(2) of the regulation denotes that a person who contravenes this regulation commits an offence and shall, on conviction, be liable to a fine not exceeding three hundred thousand ringgit (RM 300,000.00) or to imprisonment for a term of not exceeding three years or to both.

To eliminate the potential of interferences, the following procedures must be followed strictly:-

a) Ensure that suffient equipment, tools and test gear is available and can used to monitor and verify that your transmission does not cause any interference to other radio services.

b) You must responsible if your amateur radio is found to be the caused of interference. Immediate remedy action must be taken to rectify the problems in case of interference.

c) Ensure that the transmission do not exceed the level of over deviation.

d) Ensure that the radiated energy is always within the narrowest posible frequency bands for any class of emission in use.

e) The radiation of harmonics and spurious emissions should be suppressed to minimize interference.

Historical Description of Amateur Radio: From the Encyclopedia Britannica:-

Interest in amateur radio arose around the turn of the century, shortly after the Italian inventor Guglielmo Marconi successfully sent the first transatlantic wireless signal in 1901. The interference of amateur broadcasts with commercial and military transmissions led to the institution of government control in 1911. After World War I, amateurs became active in radio experimentation, contributing to developments in long-distance broadcasting and becoming the first radio operators successfully to exploit the upper medium-frequency and lower high-frequency radio bands. Over the years, amateur radio operators have also provided emergency communications during forest fires, floods, hurricanes, and other disasters. They serve as an important link between stricken communities and the outside world until normal communications are reestablished.Amateur radio operators in the United States are subject to international and federal regulations. There are five classes of licenses. Competence in the use of the International Morse Code and a knowledge of radio theory and regulation are required to obtain the advanced-level licenses. Amateur radio is allocated frequencies at the extreme high-frequency end of the medium-wave band, five groups of frequencies in the shortwave band, two groups in the veryhigh-frequency band, three in the ultrahigh-frequency band, and seven in the superhigh-frequency band for telegraphic and telephonic communication using amplitude and frequency modulation. There are restrictions on the power of the transmitters, and certain of the frequencies must be shared with due regard for the needs of other users.

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