radio Archives

July 25, 2012

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Sinyal komunikasi sering ganggu penerbangan di Indonesia

Penyebab kecelakaan yang menimpa pesawat jenis Sukhoi Superjet 100, di Gunung Salak masih belum diketahui.…

July 25, 2012

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Mengganggu Frekuensi Penerbangan

TEMPO.CO, Banyuwangi - Ketua Divisi Pemantauan dan Penertiban Balai Monitoring, Iwan Purnomo, mengatakan dua radio…

July 25, 2012

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Dipenjara Kerana Men-“Jamming”

(This article is about Jack Gerritsen of Bell, CA who had the amateur radio callsign…

June 7, 2012

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Physically Small Spiral Antenna

http://www.google.com/patents/US7586462?printsec=abstract&dq=physically+small+spiral+antenna&ei=J1_QT4n2M9DOrQehlLiJDA#v=onepage&q=physically%20small%20spiral%20antenna&f=false

June 6, 2012

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The simplicity of Morse code telegraphy

Morse code is an on-off code. It is not a binary code since the gaps…

June 6, 2012

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Surviving With the Help of Morse Code

Everyone has heard of Morse code. It has been almost 144 years since its inception…

June 6, 2012

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Surfin’: Radioing the Titanic

04/13/2012 By Stan Horzepa, WA1LOUContributing Editor This week, Surfin’ hops on the wayback machine and…

June 6, 2012

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Inspiration and Perspiration — RMS Titanic Distress Signals Heard Again

06/01/2012 The 100th anniversary of the Titanic disaster involved many commemorative events around the world, from Belfast,…

November 20, 2011

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Linear VS Switching Power Supply

For amateur radio operators, linear and switching power supplies are the most common power supplies…

November 20, 2011

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Switching Mode Power Supply (SMPS) Interference

1. Why are Switched Mode Power Supplies (SMPS) associated with radio interference? Switched mode power supplies…