Communication Engineering by Prof. Surendra pal sir 1 Introduction to Communication Engineering 2 Amplitude Modulation 3 Amplitude Modulation (Contd.) 4 Sing…
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Ham Radio Magazine January 1972: Phase Locked Loop RTTY Terminal Unit
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This lesson covers the basic concepts of standing waves, phase shift, and the reflection and transmission of one-dimensional transverse waves.
http://www.physicseh.com/ Free simple easy to follow videos all organized on our website.
Gunter’s Space Page has reported that the Es’hail 2 communications satellite will carry analog and digital Amateur Radio transponders. The new satellite, which will be operated by Es’hailSat, the Qatar Satellite Company, will be in a geostationary orbit, positioned at the 26° East “hotspot” position for TV broadcasting to the Middle East and North Africa. Launch is planned for late 2016.
Es’hail…
American Radio Relay League | Ham Radio Association and Resources
If the US Postal Service (USPS) gets its way, it will no longer sell International Reply Coupons (IRCs) after January 27, 2013. According to the October 23 edition of the Federal Register, there is not sufficient demand for the USPS to continue offering IRCs to customers; however, per the Universal Postal Union (UPU) regulations, the USPS must continue to exchange (redeem) IRCs that have been p…
American Radio Relay League | Ham Radio Association and Resources
If the US Postal Service (USPS) gets its way, it will no longer sell International Reply Coupons (IRCs) after January 27, 2013. According to the October 23 edition of the Federal Register, there is not sufficient demand for the USPS to continue offering IRCs to customers; however, per the Universal Postal Union (UPU) regulations, the USPS must continue to exchange (redeem) IRCs that have been p…
American Radio Relay League | Ham Radio Association and Resources