More about antenna (104)

1-07-1994 | Last month we examined the basic theory of loop antennas, and demonstrated some of the basic forms of loop antenna, resonating methods and...

1-06-1994 | The Very Low Frequency (VLF) bands are found between 10 kHz and 30 kHz; the LF frequencies occupy 30 kHz to 300 kHz; and the medium wave...

1-12-1993 | Often, a video signal applied to the TV receiver via the SCART or AV input appears rather less well-defined than a signal applied directl...

1-06-1993 | The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...

1-04-1993 | We can make antenna impedance measurements using a variant of the oldfashioned Wheatstone bridge. This article shows the basic form of th...

1-03-1993 | It had always seemed logical to the writer that when ferrite rods first appeared in broadcast receivers, the technique ought to be usable...

1-03-1993 | This article looks at instruments and methods that can be used by both harn operators and shortwave listeners to get the most out of an an...

1-11-1992 | This is a short, efficient, horizontal indoor spiral transmitting / receiving antenna, using 139 feet (approx. 42 m), that can be compa...

1-10-1992 | This design goes to show that low noise and substantial amplification can go hand in hand in a single amplifier with excellent wideband ch...

1-09-1992 | This transmitter was designed to provide a frequency-stable, near-fool-proof, RF power source for use in the initial design of new types of...