Talk:List of basic radio topics

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[edit] Introduction

This is a page to be developed for the radio enthusiasts. Covering trends, hobbies and technology. If you want to learn about the fascinating world of radio then stay here.

Topics here will include Software Defined Radio or LPAM or Low Powered AM Broadcasting. As well as topics relating to shortwave radio.

A list of useful information for proposed topics should include such things that are not regularly talked about, such as the interest in LPAM and FCC proposals for such. How to build antennas for LPAM. Software Defined Radio is the next great trend in radio and so this is a topic for discussing the trends in radio technology and the future of radio.

The idea here is to round out the world of radio by including those items of hard to find information.

Software Defined Radio:

Software Defined Radio is a radio system that uses software to perform the functions of signal demodulation as well as perform audio bandpass filtering and notch filtering. The software also contains the automatic gain control as well as noise blanker functions.

The modes of operation that are demodulated in the SDR Radio System are: AM, SSB, CW, FM, AM Synchronous, C QAM Stereo, and DRM. Which is an astonishing accomplishment in such a simple radio.

The receiver hardware itself works by splitting the incoming signal from the antenna into two channels that are then phase shifted 90 degrees from each other to create two low frequency i.f. channels that are within the audio passband of the sound card. The stereo like channels are referred to as the I and Q outputs. This is known as Quadrature Phase Detection.

The phase shifting of the two helps the software processes to define the upper and lower sidebands and other information in the passband. The passband is so wide, 24, and to 48 and 96 kHz that the software can detect and display signals above and below the tuned to frequency on a spectrum analyzer display in the software. ~ [http://en.wikipedia.org/wiki/User:Wavelengths Dannie Jackson ]

This list begun by Wavelengths

[edit] Comment on format

It's not a list. It's prose. It has potential to become a list, but it isn't one at this time. The Transhumanist (talk) 00:20, 19 November 2007 (UTC)

I've moved the prose to the section above. It fits better on this talk page than on the list page itself.

I've also added a skeleton to the list page to help get it started. All that needs to be done is for it to be modified to fit the subject, and filled-in.

The Transhumanist (talk) 00:47, 19 November 2007 (UTC)